Vulnerability-Lookup

FKIE_CVE-2026-64569

Vulnerability from fkie_nvd - Published: 2026-08-05 08:16 - Updated: 2026-08-05 08:16

Severity

Summary

In the Linux kernel, the following vulnerability has been resolved: mpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n On CONFIG_INET=n builds, mpls_valid_fib_dump_req() walks the parsed attribute table itself instead of calling ip_valid_fib_dump_req(). The RTA_OIF arm passes tb[RTA_OIF] to nla_get_u32() without checking it is present, so an RTM_GETROUTE dump for AF_MPLS with strict checking and no RTA_OIF hits a NULL dereference. RTM_GETROUTE is RTNL_KIND_GET, which rtnetlink_rcv_msg() permits without CAP_NET_ADMIN, so an unprivileged user can trigger it. Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] RIP: 0010:mpls_valid_fib_dump_req (net/mpls/af_mpls.c:2189) Call Trace: mpls_dump_routes (net/mpls/af_mpls.c:2236) netlink_dump (net/netlink/af_netlink.c:2331) __netlink_dump_start (net/netlink/af_netlink.c:2446) rtnetlink_rcv_msg (net/core/rtnetlink.c:7033) netlink_rcv_skb (net/netlink/af_netlink.c:2556) netlink_unicast (net/netlink/af_netlink.c:1345) netlink_sendmsg (net/netlink/af_netlink.c:1900) __sock_sendmsg (net/socket.c:790) ____sys_sendmsg (net/socket.c:2684) ___sys_sendmsg (net/socket.c:2738) __sys_sendmsg (net/socket.c:2770) do_syscall_64 (arch/x86/entry/syscall_64.c:94) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121) Skip unset attributes, as ip_valid_fib_dump_req() does.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/06db79411a280707c7e4bf4b221ff4e664b51502
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/56d96fededd61192cd7cc8d2b0f36adfd59036c3
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5f6e7b32bd1fbde10fd31a4143260735ea535b8a
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d6eee7cd078aaf9dd75efc801f6c9b608a37cd71

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mpls/af_mpls.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d6eee7cd078aaf9dd75efc801f6c9b608a37cd71",
              "status": "affected",
              "version": "196cfebf897266c3450519e916bab9daff74e52c",
              "versionType": "git"
            },
            {
              "lessThan": "ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce",
              "status": "affected",
              "version": "196cfebf897266c3450519e916bab9daff74e52c",
              "versionType": "git"
            },
            {
              "lessThan": "5f6e7b32bd1fbde10fd31a4143260735ea535b8a",
              "status": "affected",
              "version": "196cfebf897266c3450519e916bab9daff74e52c",
              "versionType": "git"
            },
            {
              "lessThan": "06db79411a280707c7e4bf4b221ff4e664b51502",
              "status": "affected",
              "version": "196cfebf897266c3450519e916bab9daff74e52c",
              "versionType": "git"
            },
            {
              "lessThan": "56d96fededd61192cd7cc8d2b0f36adfd59036c3",
              "status": "affected",
              "version": "196cfebf897266c3450519e916bab9daff74e52c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/mpls/af_mpls.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.20"
            },
            {
              "lessThan": "4.20",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n\n\nOn CONFIG_INET=n builds, mpls_valid_fib_dump_req() walks the parsed\nattribute table itself instead of calling ip_valid_fib_dump_req(). The\nRTA_OIF arm passes tb[RTA_OIF] to nla_get_u32() without checking it is\npresent, so an RTM_GETROUTE dump for AF_MPLS with strict checking and no\nRTA_OIF hits a NULL dereference.\n\nRTM_GETROUTE is RTNL_KIND_GET, which rtnetlink_rcv_msg() permits without\nCAP_NET_ADMIN, so an unprivileged user can trigger it.\n\n  Oops: general protection fault, probably for non-canonical address\n        0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI\n  KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n  RIP: 0010:mpls_valid_fib_dump_req (net/mpls/af_mpls.c:2189)\n  Call Trace:\n   mpls_dump_routes (net/mpls/af_mpls.c:2236)\n   netlink_dump (net/netlink/af_netlink.c:2331)\n   __netlink_dump_start (net/netlink/af_netlink.c:2446)\n   rtnetlink_rcv_msg (net/core/rtnetlink.c:7033)\n   netlink_rcv_skb (net/netlink/af_netlink.c:2556)\n   netlink_unicast (net/netlink/af_netlink.c:1345)\n   netlink_sendmsg (net/netlink/af_netlink.c:1900)\n   __sock_sendmsg (net/socket.c:790)\n   ____sys_sendmsg (net/socket.c:2684)\n   ___sys_sendmsg (net/socket.c:2738)\n   __sys_sendmsg (net/socket.c:2770)\n   do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n   entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n\nSkip unset attributes, as ip_valid_fib_dump_req() does."
    }
  ],
  "id": "CVE-2026-64569",
  "lastModified": "2026-08-05T08:16:36.547",
  "metrics": {},
  "published": "2026-08-05T08:16:36.547",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/06db79411a280707c7e4bf4b221ff4e664b51502"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/56d96fededd61192cd7cc8d2b0f36adfd59036c3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5f6e7b32bd1fbde10fd31a4143260735ea535b8a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d6eee7cd078aaf9dd75efc801f6c9b608a37cd71"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-64569 (GCVE-0-2026-64569)

Vulnerability from cvelistv5 – Published: 2026-08-05 08:08 – Updated: 2026-08-05 08:08

Title

mpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n

Summary

Severity

No CVSS data available.

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/d6eee7cd078aaf9dd…
https://git.kernel.org/stable/c/ad6284ced6a15e4ab…
https://git.kernel.org/stable/c/5f6e7b32bd1fbde10…
https://git.kernel.org/stable/c/06db79411a280707c…
https://git.kernel.org/stable/c/56d96fededd61192c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 196cfebf897266c3450519e916bab9daff74e52c , < d6eee7cd078aaf9dd75efc801f6c9b608a37cd71 (git) Affected: 196cfebf897266c3450519e916bab9daff74e52c , < ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce (git) Affected: 196cfebf897266c3450519e916bab9daff74e52c , < 5f6e7b32bd1fbde10fd31a4143260735ea535b8a (git) Affected: 196cfebf897266c3450519e916bab9daff74e52c , < 06db79411a280707c7e4bf4b221ff4e664b51502 (git) Affected: 196cfebf897266c3450519e916bab9daff74e52c , < 56d96fededd61192cd7cc8d2b0f36adfd59036c3 (git)
Linux	Linux	Affected: 4.20 Unaffected: 0 , < 4.20 (semver) Unaffected: 6.6.148 , ≤ 6.6.* (semver) Unaffected: 6.12.101 , ≤ 6.12.* (semver) Unaffected: 6.18.42 , ≤ 6.18.* (semver) Unaffected: 7.1.6 , ≤ 7.1.* (semver) Unaffected: 7.2-rc4 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/mpls/af_mpls.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d6eee7cd078aaf9dd75efc801f6c9b608a37cd71",
              "status": "affected",
              "version": "196cfebf897266c3450519e916bab9daff74e52c",
              "versionType": "git"
            },
            {
              "lessThan": "ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce",
              "status": "affected",
              "version": "196cfebf897266c3450519e916bab9daff74e52c",
              "versionType": "git"
            },
            {
              "lessThan": "5f6e7b32bd1fbde10fd31a4143260735ea535b8a",
              "status": "affected",
              "version": "196cfebf897266c3450519e916bab9daff74e52c",
              "versionType": "git"
            },
            {
              "lessThan": "06db79411a280707c7e4bf4b221ff4e664b51502",
              "status": "affected",
              "version": "196cfebf897266c3450519e916bab9daff74e52c",
              "versionType": "git"
            },
            {
              "lessThan": "56d96fededd61192cd7cc8d2b0f36adfd59036c3",
              "status": "affected",
              "version": "196cfebf897266c3450519e916bab9daff74e52c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/mpls/af_mpls.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.20"
            },
            {
              "lessThan": "4.20",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.148",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.101",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.42",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.6",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2-rc4",
                  "versionStartIncluding": "4.20",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n\n\nOn CONFIG_INET=n builds, mpls_valid_fib_dump_req() walks the parsed\nattribute table itself instead of calling ip_valid_fib_dump_req(). The\nRTA_OIF arm passes tb[RTA_OIF] to nla_get_u32() without checking it is\npresent, so an RTM_GETROUTE dump for AF_MPLS with strict checking and no\nRTA_OIF hits a NULL dereference.\n\nRTM_GETROUTE is RTNL_KIND_GET, which rtnetlink_rcv_msg() permits without\nCAP_NET_ADMIN, so an unprivileged user can trigger it.\n\n  Oops: general protection fault, probably for non-canonical address\n        0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI\n  KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]\n  RIP: 0010:mpls_valid_fib_dump_req (net/mpls/af_mpls.c:2189)\n  Call Trace:\n   mpls_dump_routes (net/mpls/af_mpls.c:2236)\n   netlink_dump (net/netlink/af_netlink.c:2331)\n   __netlink_dump_start (net/netlink/af_netlink.c:2446)\n   rtnetlink_rcv_msg (net/core/rtnetlink.c:7033)\n   netlink_rcv_skb (net/netlink/af_netlink.c:2556)\n   netlink_unicast (net/netlink/af_netlink.c:1345)\n   netlink_sendmsg (net/netlink/af_netlink.c:1900)\n   __sock_sendmsg (net/socket.c:790)\n   ____sys_sendmsg (net/socket.c:2684)\n   ___sys_sendmsg (net/socket.c:2738)\n   __sys_sendmsg (net/socket.c:2770)\n   do_syscall_64 (arch/x86/entry/syscall_64.c:94)\n   entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)\n\nSkip unset attributes, as ip_valid_fib_dump_req() does."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:08:07.233Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d6eee7cd078aaf9dd75efc801f6c9b608a37cd71"
        },
        {
          "url": "https://git.kernel.org/stable/c/ad6284ced6a15e4abd57ca4d0793b7bd15ca52ce"
        },
        {
          "url": "https://git.kernel.org/stable/c/5f6e7b32bd1fbde10fd31a4143260735ea535b8a"
        },
        {
          "url": "https://git.kernel.org/stable/c/06db79411a280707c7e4bf4b221ff4e664b51502"
        },
        {
          "url": "https://git.kernel.org/stable/c/56d96fededd61192cd7cc8d2b0f36adfd59036c3"
        }
      ],
      "title": "mpls: fix NULL deref in mpls_valid_fib_dump_req() on CONFIG_INET=n",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64569",
    "datePublished": "2026-08-05T08:08:07.233Z",
    "dateReserved": "2026-07-19T15:36:31.797Z",
    "dateUpdated": "2026-08-05T08:08:07.233Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

FKIE_CVE-2026-64569

CVE-2026-64569 (GCVE-0-2026-64569)

Tags

Sightings

Nomenclature