Vulnerability Description
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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.9, < 6.11.4 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/7ca9e472ce5c67daa3188a348ece8c02a0765039Patch
- https://git.kernel.org/stable/c/c88c150a467fcb670a1608e2272beeee3e86df6ePatch
FAQ
What is CVE-2024-50043?
CVE-2024-50043 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 ...
How severe is CVE-2024-50043?
CVE-2024-50043 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-50043?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.