CVE-2024-26844 (GCVE-0-2024-26844)
Vulnerability from cvelistv5
Published
2024-04-17 10:10
Modified
2026-01-05 10:34
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: block: Fix WARNING in _copy_from_iter Syzkaller reports a warning in _copy_from_iter because an iov_iter is supposedly used in the wrong direction. The reason is that syzcaller managed to generate a request with a transfer direction of SG_DXFER_TO_FROM_DEV. This instructs the kernel to copy user buffers into the kernel, read into the copied buffers and then copy the data back to user space. Thus the iovec is used in both directions. Detect this situation in the block layer and construct a new iterator with the correct direction for the copy-in.
References
Impacted products
Vendor Product Version
Linux Linux Version: 9124d3fe21b0947b03f4b87bcfb7acd675d6e85b
Version: 9124d3fe21b0947b03f4b87bcfb7acd675d6e85b
Version: 9124d3fe21b0947b03f4b87bcfb7acd675d6e85b
Version: 9124d3fe21b0947b03f4b87bcfb7acd675d6e85b
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-26844",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-05-10T14:27:10.114301Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-06-04T17:48:24.553Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T00:14:13.656Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/8fc80874103a5c20aebdc2401361aa01c817f75b"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/0f1bae071de9967602807472921829a54b2e5956"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/cbaf9be337f7da25742acfce325119e3395b1f1b"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://git.kernel.org/stable/c/13f3956eb5681a4045a8dfdef48df5dc4d9f58a6"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "block/blk-map.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8fc80874103a5c20aebdc2401361aa01c817f75b",
              "status": "affected",
              "version": "9124d3fe21b0947b03f4b87bcfb7acd675d6e85b",
              "versionType": "git"
            },
            {
              "lessThan": "0f1bae071de9967602807472921829a54b2e5956",
              "status": "affected",
              "version": "9124d3fe21b0947b03f4b87bcfb7acd675d6e85b",
              "versionType": "git"
            },
            {
              "lessThan": "cbaf9be337f7da25742acfce325119e3395b1f1b",
              "status": "affected",
              "version": "9124d3fe21b0947b03f4b87bcfb7acd675d6e85b",
              "versionType": "git"
            },
            {
              "lessThan": "13f3956eb5681a4045a8dfdef48df5dc4d9f58a6",
              "status": "affected",
              "version": "9124d3fe21b0947b03f4b87bcfb7acd675d6e85b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "block/blk-map.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.0"
            },
            {
              "lessThan": "4.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.80",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.19",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.8",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.80",
                  "versionStartIncluding": "4.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.19",
                  "versionStartIncluding": "4.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.7.7",
                  "versionStartIncluding": "4.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.8",
                  "versionStartIncluding": "4.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: Fix WARNING in _copy_from_iter\n\nSyzkaller reports a warning in _copy_from_iter because an\niov_iter is supposedly used in the wrong direction. The reason\nis that syzcaller managed to generate a request with\na transfer direction of SG_DXFER_TO_FROM_DEV. This instructs\nthe kernel to copy user buffers into the kernel, read into\nthe copied buffers and then copy the data back to user space.\n\nThus the iovec is used in both directions.\n\nDetect this situation in the block layer and construct a new\niterator with the correct direction for the copy-in."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-05T10:34:38.460Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8fc80874103a5c20aebdc2401361aa01c817f75b"
        },
        {
          "url": "https://git.kernel.org/stable/c/0f1bae071de9967602807472921829a54b2e5956"
        },
        {
          "url": "https://git.kernel.org/stable/c/cbaf9be337f7da25742acfce325119e3395b1f1b"
        },
        {
          "url": "https://git.kernel.org/stable/c/13f3956eb5681a4045a8dfdef48df5dc4d9f58a6"
        }
      ],
      "title": "block: Fix WARNING in _copy_from_iter",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2024-26844",
    "datePublished": "2024-04-17T10:10:08.711Z",
    "dateReserved": "2024-02-19T14:20:24.182Z",
    "dateUpdated": "2026-01-05T10:34:38.460Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8fc80874103a5c20aebdc2401361aa01c817f75b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/0f1bae071de9967602807472921829a54b2e5956\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/cbaf9be337f7da25742acfce325119e3395b1f1b\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/13f3956eb5681a4045a8dfdef48df5dc4d9f58a6\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T00:14:13.656Z\"}}, {\"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-26844\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-05-10T14:27:10.114301Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-05-23T19:01:24.294Z\"}, \"title\": \"CISA ADP Vulnrichment\"}], \"cna\": {\"title\": \"block: Fix WARNING in _copy_from_iter\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"9124d3fe21b0947b03f4b87bcfb7acd675d6e85b\", \"lessThan\": \"8fc80874103a5c20aebdc2401361aa01c817f75b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9124d3fe21b0947b03f4b87bcfb7acd675d6e85b\", \"lessThan\": \"0f1bae071de9967602807472921829a54b2e5956\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9124d3fe21b0947b03f4b87bcfb7acd675d6e85b\", \"lessThan\": \"cbaf9be337f7da25742acfce325119e3395b1f1b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"9124d3fe21b0947b03f4b87bcfb7acd675d6e85b\", \"lessThan\": \"13f3956eb5681a4045a8dfdef48df5dc4d9f58a6\", \"versionType\": \"git\"}], \"programFiles\": [\"block/blk-map.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.0\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.0\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"6.1.80\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.19\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.7.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.7.*\"}, {\"status\": \"unaffected\", \"version\": \"6.8\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"block/blk-map.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/8fc80874103a5c20aebdc2401361aa01c817f75b\"}, {\"url\": \"https://git.kernel.org/stable/c/0f1bae071de9967602807472921829a54b2e5956\"}, {\"url\": \"https://git.kernel.org/stable/c/cbaf9be337f7da25742acfce325119e3395b1f1b\"}, {\"url\": \"https://git.kernel.org/stable/c/13f3956eb5681a4045a8dfdef48df5dc4d9f58a6\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nblock: Fix WARNING in _copy_from_iter\\n\\nSyzkaller reports a warning in _copy_from_iter because an\\niov_iter is supposedly used in the wrong direction. The reason\\nis that syzcaller managed to generate a request with\\na transfer direction of SG_DXFER_TO_FROM_DEV. This instructs\\nthe kernel to copy user buffers into the kernel, read into\\nthe copied buffers and then copy the data back to user space.\\n\\nThus the iovec is used in both directions.\\n\\nDetect this situation in the block layer and construct a new\\niterator with the correct direction for the copy-in.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.80\", \"versionStartIncluding\": \"4.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.19\", \"versionStartIncluding\": \"4.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.7.7\", \"versionStartIncluding\": \"4.0\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.8\", \"versionStartIncluding\": \"4.0\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-01-05T10:34:38.460Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-26844\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-01-05T10:34:38.460Z\", \"dateReserved\": \"2024-02-19T14:20:24.182Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-04-17T10:10:08.711Z\", \"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.