CVE-2026-80805
xfs: validate attr entry pointer before field access
No known exploitation. EPSS puts it in the 9th percentile. Fixed versions are out.
No public exploit knownFix1 product4 fixed builds listed below
e.g. OID 1.3.6.1.4.1.25623.1.1.10.2026.0506
What to do
Find your product and version, then upgrade to the build on the right.
- LinuxAffected: ≥ c84760659dcf237902d4cc997cd5f55cb3b2807f, < 0f82586741e39926542f621bafa424e237a04fa4Upgrade to: 0f82586741e39926542f621bafa424e237a04fa4Affected: ≥ c84760659dcf237902d4cc997cd5f55cb3b2807f, < 134d82a2b5e3eba3ebf58753a1387b22f26ca1deUpgrade to: 134d82a2b5e3eba3ebf58753a1387b22f26ca1deAffected: ≥ c84760659dcf237902d4cc997cd5f55cb3b2807f, < 03a12253dd2a036545bdb0110a4e0b8dc70f8e7cUpgrade to: 03a12253dd2a036545bdb0110a4e0b8dc70f8e7cAffected: ≥ c84760659dcf237902d4cc997cd5f55cb3b2807f, < e99120b5944a16d0bc27e52b33de78bcdaaabf5cUpgrade to: e99120b5944a16d0bc27e52b33de78bcdaaabf5c + 5 more branchesStated by: CVE record
Versions as the sources state them. Full version matrix after sign-in
What it is
From the CVE record
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.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.2% chance of exploitation activity in the next 30 days, which ranks it in the 9th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
4 events over 45 days, from the signal feeds we watch.
- Record updated
- OpenVAS check added
- Publishedrecord updated
Affected products
Sources
References in the record
- git.kernel.org/stable/c/03a12253dd2a036545bdb0110a4e0b8dc70f8e7c
- git.kernel.org/stable/c/0f82586741e39926542f621bafa424e237a04fa4
- git.kernel.org/stable/c/134d82a2b5e3eba3ebf58753a1387b22f26ca1de
And 6 more references. See all after sign-in
In the news
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