CVE-2026-68158 (GCVE-0-2026-68158)
Vulnerability from cvelistv5
Published
2026-08-10 11:59
Modified
2026-10-19 20:58
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: libceph: Fix multiplication overflow in decode_new_up_state_weight() If a message of type CEPH_MSG_OSD_MAP contains a (maliciously) corrupted osdmap, out-of-bounds memory accesses may occur in decode_new_up_state_weight(). This happens because the bounds check for the new_state part is based on calculating its length depending on a len value read from the incoming message. This calculation may overflow leading to an incorrect bounds check. Subsequently, out-of-bounds reads may occur when decoding this part. This patch switches the multiplication to use check_mul_overflow() to abort processing the osdmap if an overflow occurred. Therefore, osdmaps/messages containing large values for len that result in a multiplication overflow are treated as invalid. [ idryomov: rename new_state_len -> new_state_item_size, formatting ]
References
Impacted products
Vendor Product Version
Linux Linux Version: 930c532869774ebf8af9efe9484c597f896a7d46
Version: 930c532869774ebf8af9efe9484c597f896a7d46
Version: 930c532869774ebf8af9efe9484c597f896a7d46
Version: 930c532869774ebf8af9efe9484c597f896a7d46
Version: 930c532869774ebf8af9efe9484c597f896a7d46
Version: 930c532869774ebf8af9efe9484c597f896a7d46
Version: 930c532869774ebf8af9efe9484c597f896a7d46
Version: 930c532869774ebf8af9efe9484c597f896a7d46
Version: 1196c36fd53c3b1615eb02f986cb727b1dfc1047
Version: bbc3aa6b0e6050b2b2e04a08dd4d6423d576b196
Version: 6b96b2d473701b45df3fea8dd9796b6ec39e6d54
Version: 7405d73cea0d0e6c541f5c534078feeb46188844
Version: 8777c9f654637d56f4c4ca54eb1bc7c609b70085
Version: 6831c98ce0b8a3e88db64aa224372effd0dcc694
Version: 032951d32c13b7564dfba82758260cb7aa1149d2
Version: 14877928f10667a5606383885d004f7185f33718
Version: 3.10.103   ≤
Version: 3.12.63   ≤
Version: 3.14.75   ≤
Version: 3.16.39   ≤
Version: 3.18.39   ≤
Version: 4.1.30   ≤
Version: 4.4.17   ≤
Version: 4.6.6   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-68158",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T15:45:15.268376Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-190",
                "description": "CWE-190 Integer Overflow or Wraparound",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-19T20:58:55.112Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ceph/osdmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2ceee3b77b83052648c40fef965f836fd7699d26",
              "status": "affected",
              "version": "930c532869774ebf8af9efe9484c597f896a7d46",
              "versionType": "git"
            },
            {
              "lessThan": "e4473751cc37db41f3f7da25d64a23e0c74570f1",
              "status": "affected",
              "version": "930c532869774ebf8af9efe9484c597f896a7d46",
              "versionType": "git"
            },
            {
              "lessThan": "f6961070c326bd158c38fa48756cde2bd78c4aaa",
              "status": "affected",
              "version": "930c532869774ebf8af9efe9484c597f896a7d46",
              "versionType": "git"
            },
            {
              "lessThan": "05c90e059269f087becfcce23348496085835c29",
              "status": "affected",
              "version": "930c532869774ebf8af9efe9484c597f896a7d46",
              "versionType": "git"
            },
            {
              "lessThan": "143ba49ead77ec483c0326f8aaad8649874e99c4",
              "status": "affected",
              "version": "930c532869774ebf8af9efe9484c597f896a7d46",
              "versionType": "git"
            },
            {
              "lessThan": "1732d89dfcd74f6fde9ce70900d316c4a151c153",
              "status": "affected",
              "version": "930c532869774ebf8af9efe9484c597f896a7d46",
              "versionType": "git"
            },
            {
              "lessThan": "bee4b5b53e7bff0467fd916cc44c9b190733c6bd",
              "status": "affected",
              "version": "930c532869774ebf8af9efe9484c597f896a7d46",
              "versionType": "git"
            },
            {
              "lessThan": "98917a499ec7064c14fc56d180a4fd636fc2784c",
              "status": "affected",
              "version": "930c532869774ebf8af9efe9484c597f896a7d46",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1196c36fd53c3b1615eb02f986cb727b1dfc1047",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bbc3aa6b0e6050b2b2e04a08dd4d6423d576b196",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6b96b2d473701b45df3fea8dd9796b6ec39e6d54",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7405d73cea0d0e6c541f5c534078feeb46188844",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8777c9f654637d56f4c4ca54eb1bc7c609b70085",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6831c98ce0b8a3e88db64aa224372effd0dcc694",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "032951d32c13b7564dfba82758260cb7aa1149d2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "14877928f10667a5606383885d004f7185f33718",
              "versionType": "git"
            },
            {
              "lessThan": "3.11",
              "status": "affected",
              "version": "3.10.103",
              "versionType": "semver"
            },
            {
              "lessThan": "3.13",
              "status": "affected",
              "version": "3.12.63",
              "versionType": "semver"
            },
            {
              "lessThan": "3.15",
              "status": "affected",
              "version": "3.14.75",
              "versionType": "semver"
            },
            {
              "lessThan": "3.17",
              "status": "affected",
              "version": "3.16.39",
              "versionType": "semver"
            },
            {
              "lessThan": "3.19",
              "status": "affected",
              "version": "3.18.39",
              "versionType": "semver"
            },
            {
              "lessThan": "4.2",
              "status": "affected",
              "version": "4.1.30",
              "versionType": "semver"
            },
            {
              "lessThan": "4.5",
              "status": "affected",
              "version": "4.4.17",
              "versionType": "semver"
            },
            {
              "lessThan": "4.7",
              "status": "affected",
              "version": "4.6.6",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/ceph/osdmap.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.7"
            },
            {
              "lessThan": "4.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.265",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.216",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.183",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.148",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.101",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.42",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.6",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.10.103",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.12.63",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.14.75",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.16.39",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "3.18.39",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.1.30",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.6.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: Fix multiplication overflow in decode_new_up_state_weight()\n\nIf a message of type CEPH_MSG_OSD_MAP contains a (maliciously) corrupted\nosdmap, out-of-bounds memory accesses may occur in\ndecode_new_up_state_weight(). This happens because the bounds check for\nthe new_state part is based on calculating its length depending on a len\nvalue read from the incoming message. This calculation may overflow\nleading to an incorrect bounds check. Subsequently, out-of-bounds reads\nmay occur when decoding this part.\n\nThis patch switches the multiplication to use check_mul_overflow() to\nabort processing the osdmap if an overflow occurred. Therefore,\nosdmaps/messages containing large values for len that result in a\nmultiplication overflow are treated as invalid.\n\n[ idryomov: rename new_state_len -\u003e new_state_item_size, formatting ]"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - Malformed incremental osdmap data is delivered in CEPH_MSG_OSD_MAP over TCP from a Ceph monitor (mon_dispatch) or OSD (osd_dispatch) to libceph clients (CephFS/RBD), and the overflow is triggered while decoding received network bytes in osdmap_apply_incremental().\nAC:L - A compromised or attacker-controlled monitor/OSD can publish an incremental osdmap with epoch N+1 and a crafted new_state length that wraps the multiply, reliably bypassing bounds checks without races or victim-specific memory layout.\nPR:N - Exploitation requires no privileges on the victim host; a malicious cluster peer or on-path attacker that can deliver forged osdmaps to an already-connected kernel Ceph client needs no local account, capabilities, or user-namespace tricks.\nUI:N - Once a host is a Ceph client, osdmap subscriptions and updates are applied automatically by the kernel; no additional mount, open, or interactive step is needed at exploit time beyond the existing client session.\nS:U - Impact is confined to kernel memory and libceph client state on the Ceph client host (info leak, map corruption, crash, or privilege escalation); it does not cross VM, IOMMU, or sandbox boundaries to another security authority.\nC:H - Integer-overflow bypass lets decode_new_up_state_weight() run bare ceph_decode_32/8 loops past the message end, performing out-of-bounds reads of adjacent kernel heap/slack memory that can disclose pointers and other sensitive data.\nI:H - Misaligned decoding also drives attacker-controlled osd/xorstate/weight values into map-\u003eosd_weight[], map-\u003eosd_state[], and map-\u003eosd_addr[] updates (including memset), corrupting kernel osdmap state in ways usable for further exploitation.\nA:H - Unbounded out-of-bounds reads while parsing osdmaps can fault on unmapped pages and trigger kernel oops/panic; map corruption can also cause persistent client failure, repeatable on each malicious incremental map."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-19T16:30:30.014Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/2ceee3b77b83052648c40fef965f836fd7699d26"
        },
        {
          "url": "https://git.kernel.org/stable/c/e4473751cc37db41f3f7da25d64a23e0c74570f1"
        },
        {
          "url": "https://git.kernel.org/stable/c/f6961070c326bd158c38fa48756cde2bd78c4aaa"
        },
        {
          "url": "https://git.kernel.org/stable/c/05c90e059269f087becfcce23348496085835c29"
        },
        {
          "url": "https://git.kernel.org/stable/c/143ba49ead77ec483c0326f8aaad8649874e99c4"
        },
        {
          "url": "https://git.kernel.org/stable/c/1732d89dfcd74f6fde9ce70900d316c4a151c153"
        },
        {
          "url": "https://git.kernel.org/stable/c/bee4b5b53e7bff0467fd916cc44c9b190733c6bd"
        },
        {
          "url": "https://git.kernel.org/stable/c/98917a499ec7064c14fc56d180a4fd636fc2784c"
        }
      ],
      "title": "libceph: Fix multiplication overflow in decode_new_up_state_weight()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-68158",
    "datePublished": "2026-08-10T11:59:24.675Z",
    "dateReserved": "2026-07-30T09:28:09.371Z",
    "dateUpdated": "2026-10-19T20:58:55.112Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-68158\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-16T15:45:15.268376Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-190\", \"description\": \"CWE-190 Integer Overflow or Wraparound\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-16T15:45:15.843Z\"}}], \"cna\": {\"title\": \"libceph: Fix multiplication overflow in decode_new_up_state_weight()\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 9.8, \"baseSeverity\": \"CRITICAL\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:N - Malformed incremental osdmap data is delivered in CEPH_MSG_OSD_MAP over TCP from a Ceph monitor (mon_dispatch) or OSD (osd_dispatch) to libceph clients (CephFS/RBD), and the overflow is triggered while decoding received network bytes in osdmap_apply_incremental().\\nAC:L - A compromised or attacker-controlled monitor/OSD can publish an incremental osdmap with epoch N+1 and a crafted new_state length that wraps the multiply, reliably bypassing bounds checks without races or victim-specific memory layout.\\nPR:N - Exploitation requires no privileges on the victim host; a malicious cluster peer or on-path attacker that can deliver forged osdmaps to an already-connected kernel Ceph client needs no local account, capabilities, or user-namespace tricks.\\nUI:N - Once a host is a Ceph client, osdmap subscriptions and updates are applied automatically by the kernel; no additional mount, open, or interactive step is needed at exploit time beyond the existing client session.\\nS:U - Impact is confined to kernel memory and libceph client state on the Ceph client host (info leak, map corruption, crash, or privilege escalation); it does not cross VM, IOMMU, or sandbox boundaries to another security authority.\\nC:H - Integer-overflow bypass lets decode_new_up_state_weight() run bare ceph_decode_32/8 loops past the message end, performing out-of-bounds reads of adjacent kernel heap/slack memory that can disclose pointers and other sensitive data.\\nI:H - Misaligned decoding also drives attacker-controlled osd/xorstate/weight values into map-\u003eosd_weight[], map-\u003eosd_state[], and map-\u003eosd_addr[] updates (including memset), corrupting kernel osdmap state in ways usable for further exploitation.\\nA:H - Unbounded out-of-bounds reads while parsing osdmaps can fault on unmapped pages and trigger kernel oops/panic; map corruption can also cause persistent client failure, repeatable on each malicious incremental map.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\", \"lessThan\": \"2ceee3b77b83052648c40fef965f836fd7699d26\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\", \"lessThan\": \"e4473751cc37db41f3f7da25d64a23e0c74570f1\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\", \"lessThan\": \"f6961070c326bd158c38fa48756cde2bd78c4aaa\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\", \"lessThan\": \"05c90e059269f087becfcce23348496085835c29\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\", \"lessThan\": \"143ba49ead77ec483c0326f8aaad8649874e99c4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\", \"lessThan\": \"1732d89dfcd74f6fde9ce70900d316c4a151c153\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\", \"lessThan\": \"bee4b5b53e7bff0467fd916cc44c9b190733c6bd\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"930c532869774ebf8af9efe9484c597f896a7d46\", \"lessThan\": \"98917a499ec7064c14fc56d180a4fd636fc2784c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"1196c36fd53c3b1615eb02f986cb727b1dfc1047\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"bbc3aa6b0e6050b2b2e04a08dd4d6423d576b196\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6b96b2d473701b45df3fea8dd9796b6ec39e6d54\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7405d73cea0d0e6c541f5c534078feeb46188844\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"8777c9f654637d56f4c4ca54eb1bc7c609b70085\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"6831c98ce0b8a3e88db64aa224372effd0dcc694\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"032951d32c13b7564dfba82758260cb7aa1149d2\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"14877928f10667a5606383885d004f7185f33718\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"3.10.103\", \"lessThan\": \"3.11\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"3.12.63\", \"lessThan\": \"3.13\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"3.14.75\", \"lessThan\": \"3.15\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"3.16.39\", \"lessThan\": \"3.17\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"3.18.39\", \"lessThan\": \"3.19\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"4.1.30\", \"lessThan\": \"4.2\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"4.4.17\", \"lessThan\": \"4.5\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"4.6.6\", \"lessThan\": \"4.7\", \"versionType\": \"semver\"}], \"programFiles\": [\"net/ceph/osdmap.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.7\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.7\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.265\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.216\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.183\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.148\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.101\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.18.42\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.18.*\"}, {\"status\": \"unaffected\", \"version\": \"7.1.6\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"7.1.*\"}, {\"status\": \"unaffected\", \"version\": \"7.2\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/ceph/osdmap.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/2ceee3b77b83052648c40fef965f836fd7699d26\"}, {\"url\": \"https://git.kernel.org/stable/c/e4473751cc37db41f3f7da25d64a23e0c74570f1\"}, {\"url\": \"https://git.kernel.org/stable/c/f6961070c326bd158c38fa48756cde2bd78c4aaa\"}, {\"url\": \"https://git.kernel.org/stable/c/05c90e059269f087becfcce23348496085835c29\"}, {\"url\": \"https://git.kernel.org/stable/c/143ba49ead77ec483c0326f8aaad8649874e99c4\"}, {\"url\": \"https://git.kernel.org/stable/c/1732d89dfcd74f6fde9ce70900d316c4a151c153\"}, {\"url\": \"https://git.kernel.org/stable/c/bee4b5b53e7bff0467fd916cc44c9b190733c6bd\"}, {\"url\": \"https://git.kernel.org/stable/c/98917a499ec7064c14fc56d180a4fd636fc2784c\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nlibceph: Fix multiplication overflow in decode_new_up_state_weight()\\n\\nIf a message of type CEPH_MSG_OSD_MAP contains a (maliciously) corrupted\\nosdmap, out-of-bounds memory accesses may occur in\\ndecode_new_up_state_weight(). This happens because the bounds check for\\nthe new_state part is based on calculating its length depending on a len\\nvalue read from the incoming message. This calculation may overflow\\nleading to an incorrect bounds check. Subsequently, out-of-bounds reads\\nmay occur when decoding this part.\\n\\nThis patch switches the multiplication to use check_mul_overflow() to\\nabort processing the osdmap if an overflow occurred. Therefore,\\nosdmaps/messages containing large values for len that result in a\\nmultiplication overflow are treated as invalid.\\n\\n[ idryomov: rename new_state_len -\u003e new_state_item_size, formatting ]\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.265\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.216\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.183\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.148\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.101\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.42\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"7.1.6\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"7.2\", \"versionStartIncluding\": \"4.7\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"3.10.103\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"3.12.63\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"3.14.75\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"3.16.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"3.18.39\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.1.30\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.6.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-19T16:30:30.014Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-68158\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-19T20:58:55.112Z\", \"dateReserved\": \"2026-07-30T09:28:09.371Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-08-10T11:59:24.675Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.