CVE-2026-46324 (GCVE-0-2026-46324)

Vulnerability from cvelistv5 – Published: 2026-06-09 12:11 – Updated: 2026-10-30 12:26
VLAI
Title
netfilter: nf_tables: use list_del_rcu for netlink hooks
Summary
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: use list_del_rcu for netlink hooks nft_netdev_unregister_hooks and __nft_unregister_flowtable_net_hooks need to use list_del_rcu(), this list can be walked by concurrent dumpers. Add a new helper and use it consistently.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-16 15:22 UTC
CWE
  • CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6653 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 , < 6480ea533cedfbf79ea5a1f12c5f71d41484dd8a (git)
Affected: f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 , < 2405730fde96f7fa483a5862e323b681e0e09f54 (git)
Affected: f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 , < fe45e203527af8a2c0dc4c8a7b56c09c74b796c8 (git)
Affected: f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 , < 0bd93ce4f3c35e845532184331d7917d7e562c80 (git)
Affected: f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 , < 0f33e8ad6ac563ae2233dd7f75884e0ee010521d (git)
Affected: f9a43007d3f7ba76d5e7f9421094f00f2ef202f8 , < f3224ee463f8f6f6ced7dcdf6081add4f8128527 (git)
Affected: c73955a09408e7374d9abfd0e78ce3de9cda0635 (git)
Affected: b09e6ccf0d12f9356e8e3508d3e3dce126298538 (git)
Affected: 3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82 (git)
Affected: 9c413a8c8bb49cc16796371805ecb260e885bb2b (git)
Affected: a3940dcf552f2393d1e8f263b386593f98abe829 (git)
Affected: 86c0154f4c3a56c5db8b9dd09e3ce885382c2c19 (git)
Affected: 4.19.316 , < 4.20 (semver)
Affected: 5.4.262 , < 5.5 (semver)
Affected: 5.10.198 , < 5.11 (semver)
Affected: 5.15.45 , < 5.16 (semver)
Affected: 5.17.13 , < 5.18 (semver)
Affected: 5.18.2 , < 5.19 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 6.1.191 , ≤ 6.1.* (semver)
Unaffected: 6.6.160 , ≤ 6.6.* (semver)
Unaffected: 6.12.114 , ≤ 6.12.* (semver)
Unaffected: 6.18.33 , ≤ 6.18.* (semver)
Unaffected: 7.0.10 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-46324",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T15:22:09.898894Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-362",
                "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-19T19:36:58.611Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nf_tables_api.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6480ea533cedfbf79ea5a1f12c5f71d41484dd8a",
              "status": "affected",
              "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
              "versionType": "git"
            },
            {
              "lessThan": "2405730fde96f7fa483a5862e323b681e0e09f54",
              "status": "affected",
              "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
              "versionType": "git"
            },
            {
              "lessThan": "fe45e203527af8a2c0dc4c8a7b56c09c74b796c8",
              "status": "affected",
              "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
              "versionType": "git"
            },
            {
              "lessThan": "0bd93ce4f3c35e845532184331d7917d7e562c80",
              "status": "affected",
              "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
              "versionType": "git"
            },
            {
              "lessThan": "0f33e8ad6ac563ae2233dd7f75884e0ee010521d",
              "status": "affected",
              "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
              "versionType": "git"
            },
            {
              "lessThan": "f3224ee463f8f6f6ced7dcdf6081add4f8128527",
              "status": "affected",
              "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c73955a09408e7374d9abfd0e78ce3de9cda0635",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b09e6ccf0d12f9356e8e3508d3e3dce126298538",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "9c413a8c8bb49cc16796371805ecb260e885bb2b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a3940dcf552f2393d1e8f263b386593f98abe829",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "86c0154f4c3a56c5db8b9dd09e3ce885382c2c19",
              "versionType": "git"
            },
            {
              "lessThan": "4.20",
              "status": "affected",
              "version": "4.19.316",
              "versionType": "semver"
            },
            {
              "lessThan": "5.5",
              "status": "affected",
              "version": "5.4.262",
              "versionType": "semver"
            },
            {
              "lessThan": "5.11",
              "status": "affected",
              "version": "5.10.198",
              "versionType": "semver"
            },
            {
              "lessThan": "5.16",
              "status": "affected",
              "version": "5.15.45",
              "versionType": "semver"
            },
            {
              "lessThan": "5.18",
              "status": "affected",
              "version": "5.17.13",
              "versionType": "semver"
            },
            {
              "lessThan": "5.19",
              "status": "affected",
              "version": "5.18.2",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/netfilter/nf_tables_api.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "lessThan": "5.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.191",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.160",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.114",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "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": "6.1.191",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.160",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.114",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.33",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.10",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "4.19.316",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.4.262",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.10.198",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.15.45",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.17.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "5.18.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: use list_del_rcu for netlink hooks\n\nnft_netdev_unregister_hooks and __nft_unregister_flowtable_net_hooks need\nto use list_del_rcu(), this list can be walked by concurrent dumpers.\n\nAdd a new helper and use it consistently."
        }
      ],
      "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 bug is in nf_tables netdev hook teardown reached only via Netfilter netlink (nft) syscalls\u2014chain/flowtable updates, dumps, netns teardown, and netlink socket release\u2014not from remote packet handling alone. Per kernel guidance, nftables/netfilter is Local (L).\nAC:L - Exploitation is a race between hook-list removal (`list_del()` + RCU free) and concurrent RCU walkers (`nft_dump_basechain_hook_list`, flowtable dump, or packet-path `list_for_each_entry_rcu`). An attacker with CAP_NET_ADMIN can drive both sides concurrently (e.g., one thread dumping chains/flowtables while another deletes hooks or tears down the netns).\nPR:L - All nf_tables netlink operations are gated by `netlink_net_capable(skb, CAP_NET_ADMIN)` in `nfnetlink_rcv()`. CAP_NET_ADMIN is obtainable by an unprivileged user via user+network namespaces (`unshare -Urn`), not real init-namespace root.\nUI:N - No victim interaction is required; the attacker triggers hook teardown and concurrent dumps or traffic entirely through their own netlink sockets and namespace lifecycle.\nS:U - Impact is confined to kernel memory corruption and privilege escalation within the same kernel security domain; it does not inherently cross VM, container, or IOMMU boundaries.\nC:H - Using `list_del()` instead of `list_del_rcu()` on lists walked under `rcu_read_lock()` is a use-after-free/list-corruption bug; concurrent dumpers dereference `nft_hook` fields (e.g., `ifname`) after unlink/free, enabling arbitrary kernel memory read via heap grooming.\nI:H - The freed `nft_hook` kmalloc object can be reallocated and corrupted through the dangling RCU list pointers, providing a standard kernel UAF primitive exploitable for arbitrary write and control-flow hijacking.\nA:H - The race reliably causes kernel list corruption and use-after-free, leading to oops/panic during hook dumps, flowtable lookups, or netns cleanup; UAF in this path has inherent high availability impact even when not fully weaponized."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:26:17.369Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/6480ea533cedfbf79ea5a1f12c5f71d41484dd8a"
        },
        {
          "url": "https://git.kernel.org/stable/c/2405730fde96f7fa483a5862e323b681e0e09f54"
        },
        {
          "url": "https://git.kernel.org/stable/c/fe45e203527af8a2c0dc4c8a7b56c09c74b796c8"
        },
        {
          "url": "https://git.kernel.org/stable/c/0bd93ce4f3c35e845532184331d7917d7e562c80"
        },
        {
          "url": "https://git.kernel.org/stable/c/0f33e8ad6ac563ae2233dd7f75884e0ee010521d"
        },
        {
          "url": "https://git.kernel.org/stable/c/f3224ee463f8f6f6ced7dcdf6081add4f8128527"
        }
      ],
      "title": "netfilter: nf_tables: use list_del_rcu for netlink hooks",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46324",
    "datePublished": "2026-06-09T12:11:16.602Z",
    "dateReserved": "2026-05-13T15:03:33.112Z",
    "dateUpdated": "2026-10-30T12:26:17.369Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-46324",
      "date": "2026-11-07",
      "epss": "0.00125",
      "percentile": "0.02214"
    },
    "microsoft_vex": {
      "current_release_date": "2026-11-05T15:05:19.000Z",
      "cve": "CVE-2026-46324",
      "id": "msrc_CVE-2026-46324",
      "initial_release_date": "2026-06-10T01:06:09.000Z",
      "product_status:known_affected": "9",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "netfilter: nf_tables: use list_del_rcu for netlink hooks",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46324.json",
      "version": "10"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "net/netfilter/nf_tables_api.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "6480ea533cedfbf79ea5a1f12c5f71d41484dd8a",
                    "status": "affected",
                    "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "2405730fde96f7fa483a5862e323b681e0e09f54",
                    "status": "affected",
                    "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "fe45e203527af8a2c0dc4c8a7b56c09c74b796c8",
                    "status": "affected",
                    "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "0bd93ce4f3c35e845532184331d7917d7e562c80",
                    "status": "affected",
                    "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "0f33e8ad6ac563ae2233dd7f75884e0ee010521d",
                    "status": "affected",
                    "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "f3224ee463f8f6f6ced7dcdf6081add4f8128527",
                    "status": "affected",
                    "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
                    "versionType": "git"
                  },
                  {
                    "status": "affected",
                    "version": "c73955a09408e7374d9abfd0e78ce3de9cda0635",
                    "versionType": "git"
                  },
                  {
                    "status": "affected",
                    "version": "b09e6ccf0d12f9356e8e3508d3e3dce126298538",
                    "versionType": "git"
                  },
                  {
                    "status": "affected",
                    "version": "3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82",
                    "versionType": "git"
                  },
                  {
                    "status": "affected",
                    "version": "9c413a8c8bb49cc16796371805ecb260e885bb2b",
                    "versionType": "git"
                  },
                  {
                    "status": "affected",
                    "version": "a3940dcf552f2393d1e8f263b386593f98abe829",
                    "versionType": "git"
                  },
                  {
                    "status": "affected",
                    "version": "86c0154f4c3a56c5db8b9dd09e3ce885382c2c19",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "4.20",
                    "status": "affected",
                    "version": "4.19.316",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "5.5",
                    "status": "affected",
                    "version": "5.4.262",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "5.11",
                    "status": "affected",
                    "version": "5.10.198",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "5.16",
                    "status": "affected",
                    "version": "5.15.45",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "5.18",
                    "status": "affected",
                    "version": "5.17.13",
                    "versionType": "semver"
                  },
                  {
                    "lessThan": "5.19",
                    "status": "affected",
                    "version": "5.18.2",
                    "versionType": "semver"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "net/netfilter/nf_tables_api.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "5.19"
                  },
                  {
                    "lessThan": "5.19",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.191",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.160",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.114",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.33",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.0.*",
                    "status": "unaffected",
                    "version": "7.0.10",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.1",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "76EC9BF9-9775-4D90-B594-4C2AB71E1F86",
                    "versionEndExcluding": "4.20",
                    "versionStartIncluding": "4.19.316",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "5CE7F771-8144-4AEC-B6E3-5F4830BD8EB7",
                    "versionEndExcluding": "5.5",
                    "versionStartIncluding": "5.4.262",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A20D6F0B-10EA-4D52-B766-E4BFA489BA15",
                    "versionEndExcluding": "5.11",
                    "versionStartIncluding": "5.10.198",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "32E6E5DC-4DF1-444A-A2F8-9AB9B8BBA04C",
                    "versionEndExcluding": "5.16",
                    "versionStartIncluding": "5.15.45",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "91C8C459-1749-4BA8-B57B-E19335243827",
                    "versionEndExcluding": "5.18",
                    "versionStartIncluding": "5.17.13",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A5B87DBD-FE39-4120-A231-D0EB92914643",
                    "versionEndExcluding": "6.18.33",
                    "versionStartIncluding": "5.18.2",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A13475D2-59BF-4716-94B5-7C1D239A2CF4",
                    "versionEndExcluding": "7.0.10",
                    "versionStartIncluding": "6.19",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*",
                    "matchCriteriaId": "B1EF7059-E670-45F4-B422-54C40FA86390",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: use list_del_rcu for netlink hooks\n\nnft_netdev_unregister_hooks and __nft_unregister_flowtable_net_hooks need\nto use list_del_rcu(), this list can be walked by concurrent dumpers.\n\nAdd a new helper and use it consistently."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nnetfilter: nf_tables: usar list_del_rcu para los hooks de netlink\n\nnft_netdev_unregister_hooks y __nft_unregister_flowtable_net_hooks necesitan usar list_del_rcu(), esta lista puede ser recorrida por volcadores concurrentes.\n\nA\u00f1adir una nueva funci\u00f3n auxiliar y usarla de forma consistente."
          }
        ],
        "id": "CVE-2026-46324",
        "lastModified": "2026-10-30T13:19:03.000",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-46324",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T15:22:09.898894Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-06-09T13:16:37.893",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/0bd93ce4f3c35e845532184331d7917d7e562c80"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/0f33e8ad6ac563ae2233dd7f75884e0ee010521d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/2405730fde96f7fa483a5862e323b681e0e09f54"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6480ea533cedfbf79ea5a1f12c5f71d41484dd8a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/f3224ee463f8f6f6ced7dcdf6081add4f8128527"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/fe45e203527af8a2c0dc4c8a7b56c09c74b796c8"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-362"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-11-05T21:11:38+00:00",
      "cve": "CVE-2026-46324",
      "id": "CVE-2026-46324",
      "initial_release_date": "2026-06-09T00:00:00+00:00",
      "product_status:known_affected": "158",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Linux kernel: netfilter nf_tables denial of service via race condition in netlink hook unregistration",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46324.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-46324",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-10-16T15:22:09.898894Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-362",
                    "description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-10-16T15:22:10.411Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "net/netfilter/nf_tables_api.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "6480ea533cedfbf79ea5a1f12c5f71d41484dd8a",
                  "status": "affected",
                  "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
                  "versionType": "git"
                },
                {
                  "lessThan": "2405730fde96f7fa483a5862e323b681e0e09f54",
                  "status": "affected",
                  "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
                  "versionType": "git"
                },
                {
                  "lessThan": "fe45e203527af8a2c0dc4c8a7b56c09c74b796c8",
                  "status": "affected",
                  "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
                  "versionType": "git"
                },
                {
                  "lessThan": "0bd93ce4f3c35e845532184331d7917d7e562c80",
                  "status": "affected",
                  "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
                  "versionType": "git"
                },
                {
                  "lessThan": "0f33e8ad6ac563ae2233dd7f75884e0ee010521d",
                  "status": "affected",
                  "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
                  "versionType": "git"
                },
                {
                  "lessThan": "f3224ee463f8f6f6ced7dcdf6081add4f8128527",
                  "status": "affected",
                  "version": "f9a43007d3f7ba76d5e7f9421094f00f2ef202f8",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "c73955a09408e7374d9abfd0e78ce3de9cda0635",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "b09e6ccf0d12f9356e8e3508d3e3dce126298538",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "9c413a8c8bb49cc16796371805ecb260e885bb2b",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "a3940dcf552f2393d1e8f263b386593f98abe829",
                  "versionType": "git"
                },
                {
                  "status": "affected",
                  "version": "86c0154f4c3a56c5db8b9dd09e3ce885382c2c19",
                  "versionType": "git"
                },
                {
                  "lessThan": "4.20",
                  "status": "affected",
                  "version": "4.19.316",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.5",
                  "status": "affected",
                  "version": "5.4.262",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.11",
                  "status": "affected",
                  "version": "5.10.198",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.16",
                  "status": "affected",
                  "version": "5.15.45",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.18",
                  "status": "affected",
                  "version": "5.17.13",
                  "versionType": "semver"
                },
                {
                  "lessThan": "5.19",
                  "status": "affected",
                  "version": "5.18.2",
                  "versionType": "semver"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "net/netfilter/nf_tables_api.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "5.19"
                },
                {
                  "lessThan": "5.19",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.191",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.6.*",
                  "status": "unaffected",
                  "version": "6.6.160",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.12.*",
                  "status": "unaffected",
                  "version": "6.12.114",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.18.*",
                  "status": "unaffected",
                  "version": "6.18.33",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "7.0.*",
                  "status": "unaffected",
                  "version": "7.0.10",
                  "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": "6.1.191",
                      "versionStartIncluding": "5.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.160",
                      "versionStartIncluding": "5.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.114",
                      "versionStartIncluding": "5.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.18.33",
                      "versionStartIncluding": "5.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "7.0.10",
                      "versionStartIncluding": "5.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "7.1",
                      "versionStartIncluding": "5.19",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "4.19.316",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "5.4.262",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "5.10.198",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "5.15.45",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "5.17.13",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionStartIncluding": "5.18.2",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: nf_tables: use list_del_rcu for netlink hooks\n\nnft_netdev_unregister_hooks and __nft_unregister_flowtable_net_hooks need\nto use list_del_rcu(), this list can be walked by concurrent dumpers.\n\nAdd a new helper and use it consistently."
            }
          ],
          "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 bug is in nf_tables netdev hook teardown reached only via Netfilter netlink (nft) syscalls\u2014chain/flowtable updates, dumps, netns teardown, and netlink socket release\u2014not from remote packet handling alone. Per kernel guidance, nftables/netfilter is Local (L).\nAC:L - Exploitation is a race between hook-list removal (`list_del()` + RCU free) and concurrent RCU walkers (`nft_dump_basechain_hook_list`, flowtable dump, or packet-path `list_for_each_entry_rcu`). An attacker with CAP_NET_ADMIN can drive both sides concurrently (e.g., one thread dumping chains/flowtables while another deletes hooks or tears down the netns).\nPR:L - All nf_tables netlink operations are gated by `netlink_net_capable(skb, CAP_NET_ADMIN)` in `nfnetlink_rcv()`. CAP_NET_ADMIN is obtainable by an unprivileged user via user+network namespaces (`unshare -Urn`), not real init-namespace root.\nUI:N - No victim interaction is required; the attacker triggers hook teardown and concurrent dumps or traffic entirely through their own netlink sockets and namespace lifecycle.\nS:U - Impact is confined to kernel memory corruption and privilege escalation within the same kernel security domain; it does not inherently cross VM, container, or IOMMU boundaries.\nC:H - Using `list_del()` instead of `list_del_rcu()` on lists walked under `rcu_read_lock()` is a use-after-free/list-corruption bug; concurrent dumpers dereference `nft_hook` fields (e.g., `ifname`) after unlink/free, enabling arbitrary kernel memory read via heap grooming.\nI:H - The freed `nft_hook` kmalloc object can be reallocated and corrupted through the dangling RCU list pointers, providing a standard kernel UAF primitive exploitable for arbitrary write and control-flow hijacking.\nA:H - The race reliably causes kernel list corruption and use-after-free, leading to oops/panic during hook dumps, flowtable lookups, or netns cleanup; UAF in this path has inherent high availability impact even when not fully weaponized."
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-10-30T12:26:17.369Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/6480ea533cedfbf79ea5a1f12c5f71d41484dd8a"
            },
            {
              "url": "https://git.kernel.org/stable/c/2405730fde96f7fa483a5862e323b681e0e09f54"
            },
            {
              "url": "https://git.kernel.org/stable/c/fe45e203527af8a2c0dc4c8a7b56c09c74b796c8"
            },
            {
              "url": "https://git.kernel.org/stable/c/0bd93ce4f3c35e845532184331d7917d7e562c80"
            },
            {
              "url": "https://git.kernel.org/stable/c/0f33e8ad6ac563ae2233dd7f75884e0ee010521d"
            },
            {
              "url": "https://git.kernel.org/stable/c/f3224ee463f8f6f6ced7dcdf6081add4f8128527"
            }
          ],
          "title": "netfilter: nf_tables: use list_del_rcu for netlink hooks",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2026-46324",
        "datePublished": "2026-06-09T12:11:16.602Z",
        "dateReserved": "2026-05-13T15:03:33.112Z",
        "dateUpdated": "2026-10-30T12:26:17.369Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.