CVE-2026-80805xfs: validate attr entry pointer before field access
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from c84760659dcf237902d4cc997cd5f55cb3b2807f before 0f82586741e39926542f621bafa424e237a04fa4; from c84760659dcf237902d4cc997cd5f55cb3b2807f before 134d82a2b5e3eba3ebf58753a1387b22f26ca1de; from c84760659dcf237902d4cc997cd5f55cb3b2807f before 03a12253dd2a036545bdb0110a4e0b8dc70f8e7c; from c84760659dcf237902d4cc997cd5f55cb3b2807f before e99120b5944a16d0bc27e52b33de78bcdaaabf5c; from c84760659dcf237902d4cc997cd5f55cb3b2807f before 98a42bb9d60d42898c3494de351a1bf508348cde; from c84760659dcf237902d4cc997cd5f55cb3b2807f before 184c1a80421a5b5ddcd262e47980ce2e67fee211; from c84760659dcf237902d4cc997cd5f55cb3b2807f before 9f92e749fc08b7ff3d9da190c4d1b2273745b282; from c84760659dcf237902d4cc997cd5f55cb3b2807f before c35da2bac6f7cb9a9be73f188b4fcc324615c327; and 1 more ranges | CNA record |
References
- https://git.kernel.org/stable/c/0f82586741e39926542f621bafa424e237a04fa4
- https://git.kernel.org/stable/c/134d82a2b5e3eba3ebf58753a1387b22f26ca1de
- https://git.kernel.org/stable/c/03a12253dd2a036545bdb0110a4e0b8dc70f8e7c
- https://git.kernel.org/stable/c/e99120b5944a16d0bc27e52b33de78bcdaaabf5c
- https://git.kernel.org/stable/c/98a42bb9d60d42898c3494de351a1bf508348cde
- https://git.kernel.org/stable/c/184c1a80421a5b5ddcd262e47980ce2e67fee211
- https://git.kernel.org/stable/c/9f92e749fc08b7ff3d9da190c4d1b2273745b282
- https://git.kernel.org/stable/c/c35da2bac6f7cb9a9be73f188b4fcc324615c327
- https://git.kernel.org/stable/c/b7eea80be25f3334f131d52982b3131aba77b97d
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.