CVE-2024-50043nfsd: fix possible badness in FREE_STATEID
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
In the Linux kernel, the following vulnerability has been resolved: nfsd: fix possible badness in FREE_STATEID When multiple FREE_STATEIDs are sent for the same delegation stateid, it can lead to a possible either use-after-free or counter refcount underflow errors. In nfsd4_free_stateid() under the client lock we find a delegation stateid, however the code drops the lock before calling nfs4_put_stid(), that allows another FREE_STATE to find the stateid again. The first one will proceed to then free the stateid which leads to either use-after-free or decrementing already zeroed counter.
- CVSS
- 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- 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
- Modified
- Record last updated
- Oct 21, 2026
- First seen by InfoSec Signals
- Oct 21, 2026
Affected products
Linux Linux linux:linux (from the name) | from 3f29cc82a84c23cfd12b903029dd26002ca825f5 before 7ca9e472ce5c67daa3188a348ece8c02a0765039; from 3f29cc82a84c23cfd12b903029dd26002ca825f5 before c88c150a467fcb670a1608e2272beeee3e86df6e; 172d038b7c4d3cfa9fc5ac210577c5c4f8256320; from 6.6.160 before 6.7 | CNA record |
linux linux_kernel linux:linux_kernel | from 6.9 before 6.11.4; 6.12; 6.12 | NVD |
References
- https://git.kernel.org/stable/c/7ca9e472ce5c67daa3188a348ece8c02a0765039patch
- https://git.kernel.org/stable/c/c88c150a467fcb670a1608e2272beeee3e86df6epatch
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.