CVE-2026-80805
In the Linux kernel, the following vulnerability has been resolved: xfs: validate attr entry pointer before field access xfs_attr3_leaf_verify_entry() accesses lentry/rentry fields (namelen, valuelen) before checking if the entry pointer itself is within bounds. If nameidx is crafted to point near the end of the buffer, these field accesses can read out-of-bounds before the bounds check at name_end > buf_end is performed. Add explicit bounds checks for entry pointers before accessing their fields. Use offsetof() to check that the start of the flexible array member (nameval/name) is within bounds, which ensures all preceding fields are safe to access.
Affected versions
Linux kernel versions
5.5
and later are affected. Fixed in
5.10.267,
5.15.218,
6.1.185,
6.6.154,
6.12.106,
6.18.47,
7.1.11,
7.2.1,
7.3
and their respective stable series.
References
9 totalFrequently asked questions
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What is CVE-2026-80805?
CVE-2026-80805 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.5 onward and has been patched in 5.10.267, 5.15.218, 6.1.185 and others. CVE-2026-80805 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-80805?
Yes. CVE-2026-80805 has been patched. Fixed versions include 5.10.267, 5.15.218, 6.1.185 and others. If you are running Linux kernel 5.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-80805 actively exploited?
No. CVE-2026-80805 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.