Vulnerability-Lookup

FKIE_CVE-2026-31674

Vulnerability from fkie_nvd - Published: 2026-04-25 09:16 - Updated: 2026-05-06 21:34

Severity

7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check() Reject rt match rules whose addrnr exceeds IP6T_RT_HOPS. rt_mt6() expects addrnr to stay within the bounds of rtinfo->addrs[]. Validate addrnr during rule installation so malformed rules are rejected before the match logic can use an out-of-range value.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/13e3e30ed3b5b67cc1db2bd58a5d09b0f07debfa	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/29ea965a1353bc8303877422f79c8211e9ba9c55	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9d3f027327c2fa265f7f85ead41294792c3296ed	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a28ebf6f99de270d6338ccdc3b49f3e818f99b7b	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/af9b7e2b765966457f4ec23be5bd34a141f89574	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c6a503a9f4debc654e3a6a7ca1f7fce6a9953c59	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d8795fde1f78669a87c87ac29fceab2f104daa8c	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/ded71f5684df16fa645cca5bf4fe6b0cd8a46119	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	2.6.12
linux	linux_kernel	2.6.12
linux	linux_kernel	2.6.12
linux	linux_kernel	2.6.12
linux	linux_kernel	2.6.12
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0
linux	linux_kernel	7.0

JSON

To clipboard

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}

CVE-2026-31674 (GCVE-0-2026-31674)

Vulnerability from cvelistv5 – Published: 2026-04-25 08:46 – Updated: 2026-05-11 22:13

Title

netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check()

Summary

Severity

7.1 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/13e3e30ed3b5b67cc…
https://git.kernel.org/stable/c/af9b7e2b765966457…
https://git.kernel.org/stable/c/29ea965a1353bc830…
https://git.kernel.org/stable/c/c6a503a9f4debc654…
https://git.kernel.org/stable/c/ded71f5684df16fa6…
https://git.kernel.org/stable/c/d8795fde1f78669a8…
https://git.kernel.org/stable/c/a28ebf6f99de270d6…
https://git.kernel.org/stable/c/9d3f027327c2fa265…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 13e3e30ed3b5b67cc1db2bd58a5d09b0f07debfa (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < af9b7e2b765966457f4ec23be5bd34a141f89574 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 29ea965a1353bc8303877422f79c8211e9ba9c55 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < c6a503a9f4debc654e3a6a7ca1f7fce6a9953c59 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < ded71f5684df16fa645cca5bf4fe6b0cd8a46119 (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < d8795fde1f78669a87c87ac29fceab2f104daa8c (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a28ebf6f99de270d6338ccdc3b49f3e818f99b7b (git) Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9d3f027327c2fa265f7f85ead41294792c3296ed (git)
Linux	Linux	Affected: 2.6.12 Unaffected: 0 , < 2.6.12 (semver) Unaffected: 5.10.253 , ≤ 5.10.* (semver) Unaffected: 5.15.203 , ≤ 5.15.* (semver) Unaffected: 6.1.168 , ≤ 6.1.* (semver) Unaffected: 6.6.131 , ≤ 6.6.* (semver) Unaffected: 6.12.80 , ≤ 6.12.* (semver) Unaffected: 6.18.21 , ≤ 6.18.* (semver) Unaffected: 6.19.11 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv6/netfilter/ip6t_rt.c"
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        },
        {
          "url": "https://git.kernel.org/stable/c/ded71f5684df16fa645cca5bf4fe6b0cd8a46119"
        },
        {
          "url": "https://git.kernel.org/stable/c/d8795fde1f78669a87c87ac29fceab2f104daa8c"
        },
        {
          "url": "https://git.kernel.org/stable/c/a28ebf6f99de270d6338ccdc3b49f3e818f99b7b"
        },
        {
          "url": "https://git.kernel.org/stable/c/9d3f027327c2fa265f7f85ead41294792c3296ed"
        }
      ],
      "title": "netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31674",
    "datePublished": "2026-04-25T08:46:50.180Z",
    "dateReserved": "2026-03-09T15:48:24.130Z",
    "dateUpdated": "2026-05-11T22:13:26.826Z",
    "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.

Action not permitted

FKIE_CVE-2026-31674

CVE-2026-31674 (GCVE-0-2026-31674)

Tags

Sightings

Nomenclature