CVE-2024-50043
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-50043
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-50043.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2024-50043
- Downstream
- Related
- Published
- 2024-10-21T20:15:17Z
- Modified
- 2025-08-09T19:01:27Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
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 nfsd4freestateid() under the client lock we find a delegation stateid, however the code drops the lock before calling nfs4putstid(), 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.
- References