CVE-2026-46120 (GCVE-0-2026-46120)
Vulnerability from cvelistv5
Published
2026-05-28 09:35
Modified
2026-10-19 19:36
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: ip6_gre: Use cached t->net in ip6erspan_changelink(). After commit 5e72ce3e3980 ("net: ipv6: Use link netns in newlink() of rtnl_link_ops"), ip6erspan_newlink() correctly resolves the per-netns ip6gre hash via link_net. ip6erspan_changelink() was not converted in that series and still uses dev_net(dev), which diverges from the device's creation netns after IFLA_NET_NS_FD migration. This re-inserts the tunnel into the wrong per-netns hash. The original netns keeps a stale entry. When that netns is later destroyed, ip6gre_exit_rtnl_net() walks the stale entry, producing a slab-use-after-free reported by KASAN, followed by a kernel BUG at net/core/dev.c (LIST_POISON1) in unregister_netdevice_many_notify(). Reachable from an unprivileged user namespace (unshare --user --map-root-user --net). ip6gre_changelink() earlier in the same file already uses the cached t->net; only ip6erspan_changelink() has the wrong shape.
References
Impacted products
Vendor Product Version
Linux Linux Version: 2d665034f239412927b1e71329f20f001c92da09
Version: 2d665034f239412927b1e71329f20f001c92da09
Version: 2d665034f239412927b1e71329f20f001c92da09
Version: 2d665034f239412927b1e71329f20f001c92da09
Version: 2d665034f239412927b1e71329f20f001c92da09
Version: 2d665034f239412927b1e71329f20f001c92da09
Version: 2d665034f239412927b1e71329f20f001c92da09
Version: 2d665034f239412927b1e71329f20f001c92da09
Version: c6d72628352c949629af619b77b042e0fb5245e7
Version: 4.16.12   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "defaultStatus": "unknown",
            "product": "SIMATIC S7-1500 TM MFP - GNU/Linux subsystem",
            "vendor": "Siemens",
            "versions": [
              {
                "lessThan": "*",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-15T01:20:38.041Z",
          "orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e",
          "shortName": "siemens-SADP"
        },
        "references": [
          {
            "url": "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
          }
        ],
        "x_adpType": "supplier"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-46120",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T15:20:01.834232Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-19T19:36:51.221Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv6/ip6_gre.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7bd0f2b162b426b343a114e1b329f0d8d14fdc6e",
              "status": "affected",
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "versionType": "git"
            },
            {
              "lessThan": "01b71ff2857d3598337de11e7840a8e3ff21553c",
              "status": "affected",
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "versionType": "git"
            },
            {
              "lessThan": "0fcf6731706f73494245a9c0d64f93bebf95bb51",
              "status": "affected",
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "versionType": "git"
            },
            {
              "lessThan": "eca62bb0569de4d43a4dac06a2092a9d4ca1d702",
              "status": "affected",
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "versionType": "git"
            },
            {
              "lessThan": "311fdd26eb4443d43b909cc67a10f3a5fd1b21b2",
              "status": "affected",
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "versionType": "git"
            },
            {
              "lessThan": "e70cfb40c3a99b232cd42c6a6a10f0d8e039dc82",
              "status": "affected",
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "versionType": "git"
            },
            {
              "lessThan": "cf7fc624329e76c6394653d12353e1d033adea91",
              "status": "affected",
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "versionType": "git"
            },
            {
              "lessThan": "1d324c2f43f70c965f25c58cc3611c779adbe47e",
              "status": "affected",
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c6d72628352c949629af619b77b042e0fb5245e7",
              "versionType": "git"
            },
            {
              "lessThan": "4.17",
              "status": "affected",
              "version": "4.16.12",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/ipv6/ip6_gre.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.17"
            },
            {
              "lessThan": "4.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.88",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.258",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.88",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.30",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.7",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "4.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.16.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nip6_gre: Use cached t-\u003enet in ip6erspan_changelink().\n\nAfter commit 5e72ce3e3980 (\"net: ipv6: Use link netns in newlink() of\nrtnl_link_ops\"), ip6erspan_newlink() correctly resolves the per-netns\nip6gre hash via link_net. ip6erspan_changelink() was not converted in\nthat series and still uses dev_net(dev), which diverges from the\ndevice\u0027s creation netns after IFLA_NET_NS_FD migration.\n\nThis re-inserts the tunnel into the wrong per-netns hash. The\noriginal netns keeps a stale entry. When that netns is later\ndestroyed, ip6gre_exit_rtnl_net() walks the stale entry, producing a\nslab-use-after-free reported by KASAN, followed by a kernel BUG at\nnet/core/dev.c (LIST_POISON1) in unregister_netdevice_many_notify().\n\nReachable from an unprivileged user namespace (unshare --user\n--map-root-user --net).\n\nip6gre_changelink() earlier in the same file already uses the cached\nt-\u003enet; only ip6erspan_changelink() has the wrong shape."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerable code is reached only via local netlink operations (RTM_NEWLINK changelink, IFLA_NET_NS_FD device migration, and netns teardown), not from any remote packet path; this is a local attack surface.\nAC:L - The attacker deterministically performs every step (create erspan tunnel, migrate it to another netns, issue changelink, destroy the original netns) with no race or memory-layout condition outside their control.\nPR:L - The path nominally needs CAP_NET_ADMIN, but the fix commit explicitly states it is reachable from an unprivileged user namespace via `unshare --user --map-root-user --net`, so only a basic local user is required.\nUI:N - The entire sequence is driven by the attacker\u0027s own process; no action by any other user is needed.\nS:U - The use-after-free and resulting crash are confined to the kernel\u0027s own structures within the same security authority; no boundary such as VM/IOMMU is crossed.\nC:H - The stale hash entry yields a slab-use-after-free on the ip6_tnl/net_device object; reallocating the freed slab with attacker-controlled data enables reading kernel memory contents, treated as High.\nI:H - The use-after-free permits heap grooming and writes through the dangling pointer (e.g., the rcu list manipulation in unregister), providing an arbitrary-write/control-flow primitive, scored High.\nA:H - Exploitation reliably produces a KASAN slab-use-after-free followed by a kernel BUG (LIST_POISON1) in unregister_netdevice_many_notify(), crashing the kernel."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T12:29:51.685Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/7bd0f2b162b426b343a114e1b329f0d8d14fdc6e"
        },
        {
          "url": "https://git.kernel.org/stable/c/01b71ff2857d3598337de11e7840a8e3ff21553c"
        },
        {
          "url": "https://git.kernel.org/stable/c/0fcf6731706f73494245a9c0d64f93bebf95bb51"
        },
        {
          "url": "https://git.kernel.org/stable/c/eca62bb0569de4d43a4dac06a2092a9d4ca1d702"
        },
        {
          "url": "https://git.kernel.org/stable/c/311fdd26eb4443d43b909cc67a10f3a5fd1b21b2"
        },
        {
          "url": "https://git.kernel.org/stable/c/e70cfb40c3a99b232cd42c6a6a10f0d8e039dc82"
        },
        {
          "url": "https://git.kernel.org/stable/c/cf7fc624329e76c6394653d12353e1d033adea91"
        },
        {
          "url": "https://git.kernel.org/stable/c/1d324c2f43f70c965f25c58cc3611c779adbe47e"
        }
      ],
      "title": "ip6_gre: Use cached t-\u003enet in ip6erspan_changelink().",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46120",
    "datePublished": "2026-05-28T09:35:35.385Z",
    "dateReserved": "2026-05-13T15:03:33.098Z",
    "dateUpdated": "2026-10-19T19:36:51.221Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"affected\": [{\"vendor\": \"Siemens\", \"product\": \"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"*\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"x_adpType\": \"supplier\", \"references\": [{\"url\": \"https://cert-portal.siemens.com/productcert/html/ssa-784472.html\"}], \"providerMetadata\": {\"orgId\": \"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e\", \"shortName\": \"siemens-SADP\", \"dateUpdated\": \"2026-10-15T01:20:38.041Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-46120\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-16T15:20:01.834232Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-16T15:20:03.450Z\"}}], \"cna\": {\"title\": \"ip6_gre: Use cached t-\u003enet in ip6erspan_changelink().\", \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"AV:L - The vulnerable code is reached only via local netlink operations (RTM_NEWLINK changelink, IFLA_NET_NS_FD device migration, and netns teardown), not from any remote packet path; this is a local attack surface.\\nAC:L - The attacker deterministically performs every step (create erspan tunnel, migrate it to another netns, issue changelink, destroy the original netns) with no race or memory-layout condition outside their control.\\nPR:L - The path nominally needs CAP_NET_ADMIN, but the fix commit explicitly states it is reachable from an unprivileged user namespace via `unshare --user --map-root-user --net`, so only a basic local user is required.\\nUI:N - The entire sequence is driven by the attacker\u0027s own process; no action by any other user is needed.\\nS:U - The use-after-free and resulting crash are confined to the kernel\u0027s own structures within the same security authority; no boundary such as VM/IOMMU is crossed.\\nC:H - The stale hash entry yields a slab-use-after-free on the ip6_tnl/net_device object; reallocating the freed slab with attacker-controlled data enables reading kernel memory contents, treated as High.\\nI:H - The use-after-free permits heap grooming and writes through the dangling pointer (e.g., the rcu list manipulation in unregister), providing an arbitrary-write/control-flow primitive, scored High.\\nA:H - Exploitation reliably produces a KASAN slab-use-after-free followed by a kernel BUG (LIST_POISON1) in unregister_netdevice_many_notify(), crashing the kernel.\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"2d665034f239412927b1e71329f20f001c92da09\", \"lessThan\": \"7bd0f2b162b426b343a114e1b329f0d8d14fdc6e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2d665034f239412927b1e71329f20f001c92da09\", \"lessThan\": \"01b71ff2857d3598337de11e7840a8e3ff21553c\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2d665034f239412927b1e71329f20f001c92da09\", \"lessThan\": \"0fcf6731706f73494245a9c0d64f93bebf95bb51\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2d665034f239412927b1e71329f20f001c92da09\", \"lessThan\": \"eca62bb0569de4d43a4dac06a2092a9d4ca1d702\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2d665034f239412927b1e71329f20f001c92da09\", \"lessThan\": \"311fdd26eb4443d43b909cc67a10f3a5fd1b21b2\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2d665034f239412927b1e71329f20f001c92da09\", \"lessThan\": \"e70cfb40c3a99b232cd42c6a6a10f0d8e039dc82\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2d665034f239412927b1e71329f20f001c92da09\", \"lessThan\": \"cf7fc624329e76c6394653d12353e1d033adea91\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"2d665034f239412927b1e71329f20f001c92da09\", \"lessThan\": \"1d324c2f43f70c965f25c58cc3611c779adbe47e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"c6d72628352c949629af619b77b042e0fb5245e7\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"4.16.12\", \"lessThan\": \"4.17\", \"versionType\": \"semver\"}], \"programFiles\": [\"net/ipv6/ip6_gre.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.17\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"4.17\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.10.258\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.209\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.175\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.140\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.88\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.18.30\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.18.*\"}, {\"status\": \"unaffected\", \"version\": \"7.0.7\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"7.0.*\"}, {\"status\": \"unaffected\", \"version\": \"7.1\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/ipv6/ip6_gre.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/7bd0f2b162b426b343a114e1b329f0d8d14fdc6e\"}, {\"url\": \"https://git.kernel.org/stable/c/01b71ff2857d3598337de11e7840a8e3ff21553c\"}, {\"url\": \"https://git.kernel.org/stable/c/0fcf6731706f73494245a9c0d64f93bebf95bb51\"}, {\"url\": \"https://git.kernel.org/stable/c/eca62bb0569de4d43a4dac06a2092a9d4ca1d702\"}, {\"url\": \"https://git.kernel.org/stable/c/311fdd26eb4443d43b909cc67a10f3a5fd1b21b2\"}, {\"url\": \"https://git.kernel.org/stable/c/e70cfb40c3a99b232cd42c6a6a10f0d8e039dc82\"}, {\"url\": \"https://git.kernel.org/stable/c/cf7fc624329e76c6394653d12353e1d033adea91\"}, {\"url\": \"https://git.kernel.org/stable/c/1d324c2f43f70c965f25c58cc3611c779adbe47e\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nip6_gre: Use cached t-\u003enet in ip6erspan_changelink().\\n\\nAfter commit 5e72ce3e3980 (\\\"net: ipv6: Use link netns in newlink() of\\nrtnl_link_ops\\\"), ip6erspan_newlink() correctly resolves the per-netns\\nip6gre hash via link_net. ip6erspan_changelink() was not converted in\\nthat series and still uses dev_net(dev), which diverges from the\\ndevice\u0027s creation netns after IFLA_NET_NS_FD migration.\\n\\nThis re-inserts the tunnel into the wrong per-netns hash. The\\noriginal netns keeps a stale entry. When that netns is later\\ndestroyed, ip6gre_exit_rtnl_net() walks the stale entry, producing a\\nslab-use-after-free reported by KASAN, followed by a kernel BUG at\\nnet/core/dev.c (LIST_POISON1) in unregister_netdevice_many_notify().\\n\\nReachable from an unprivileged user namespace (unshare --user\\n--map-root-user --net).\\n\\nip6gre_changelink() earlier in the same file already uses the cached\\nt-\u003enet; only ip6erspan_changelink() has the wrong shape.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.258\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.209\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.175\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.140\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.88\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.18.30\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"7.0.7\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"7.1\", \"versionStartIncluding\": \"4.17\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"4.16.12\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-08-05T12:29:51.685Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-46120\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-19T19:36:51.221Z\", \"dateReserved\": \"2026-05-13T15:03:33.098Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2026-05-28T09:35:35.385Z\", \"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.