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CVE-2026-31674

netfilter: ip6t_rt: reject oversized addrnr in rt_mt6_check() PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 13e3e30ed3b5b67cc1db2bd58a5d09b0f07debfa; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before af9b7e2b765966457f4ec23be5bd34a141f89574; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 29ea965a1353bc8303877422f79c8211e9ba9c55; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before c6a503a9f4debc654e3a6a7ca1f7fce6a9953c59; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before ded71f5684df16fa645cca5bf4fe6b0cd8a46119; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before d8795fde1f78669a87c87ac29fceab2f104daa8c; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before a28ebf6f99de270d6338ccdc3b49f3e818f99b7b; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 9d3f027327c2fa265f7f85ead41294792c3296ed
Linux / Linuxaffected 2.6.12; unaffected 0 before 2.6.12; unaffected 5.10.253 through 5.10.*; unaffected 5.15.203 through 5.15.*; unaffected 6.1.168 through 6.1.*; unaffected 6.6.131 through 6.6.*; unaffected 6.12.80 through 6.12.*; unaffected 6.18.21 through 6.18.*; unaffected 6.19.11 through 6.19.*; unaffected 7.0 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

siemens-SADP

No English description supplied.

CISA-ADP

No English description supplied.

No references supplied.