Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 3f29cc82a84c23cfd12b903029dd26002ca825f5 before 7ca9e472ce5c67daa3188a348ece8c02a0765039; affected 3f29cc82a84c23cfd12b903029dd26002ca825f5 before c88c150a467fcb670a1608e2272beeee3e86df6e; affected 172d038b7c4d3cfa9fc5ac210577c5c4f8256320; affected 6.6.160 before 6.7 |
| Linux / Linux | affected 6.9; unaffected 0 before 6.9; unaffected 6.11.4 through 6.11.*; unaffected 6.12 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/7ca9e472ce5c67daa3188a348ece8c02a0765039
- https://git.kernel.org/stable/c/c88c150a467fcb670a1608e2272beeee3e86df6e
ADP enrichment
No English description supplied.
No references supplied.