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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00024.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux Subscribe
Linux Kernel Subscribe

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://git.kernel.org/stable/c/13e3e30ed3b5b67cc1db2bd58a5d09b0f07debfa cve-icon cve-icon
https://git.kernel.org/stable/c/29ea965a1353bc8303877422f79c8211e9ba9c55 cve-icon cve-icon
https://git.kernel.org/stable/c/9d3f027327c2fa265f7f85ead41294792c3296ed cve-icon cve-icon
https://git.kernel.org/stable/c/a28ebf6f99de270d6338ccdc3b49f3e818f99b7b cve-icon cve-icon
https://git.kernel.org/stable/c/af9b7e2b765966457f4ec23be5bd34a141f89574 cve-icon cve-icon
https://git.kernel.org/stable/c/c6a503a9f4debc654e3a6a7ca1f7fce6a9953c59 cve-icon cve-icon
https://git.kernel.org/stable/c/d8795fde1f78669a87c87ac29fceab2f104daa8c cve-icon cve-icon
https://git.kernel.org/stable/c/ded71f5684df16fa645cca5bf4fe6b0cd8a46119 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2026042543-CVE-2026-31674-7e8a@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-31674 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-31674 cve-icon
History

Mon, 27 Apr 2026 15:00:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

 cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H'}

Mon, 27 Apr 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1284
References
Metrics threat_severity

None

 cvssV3_1

{'score': 7.0, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Moderate

Sat, 25 Apr 2026 09:00:00 +0000

Type Values Removed Values Added
Description 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.
Title netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-04-27T14:04:55.516Z

Reserved: 2026-03-09T15:48:24.130Z

Link: CVE-2026-31674

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-25T09:16:00.963

Modified: 2026-04-27T15:16:18.640

Link: CVE-2026-31674

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-25T00:00:00Z

Links: CVE-2026-31674 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses