CVE-2024-50043: Linux

Описание

Оригинално описание

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.

Засегнати продукти

• Linux Linux: 3f29cc82a84c23cfd12b903029dd26002ca825f5 преди 7ca9e472ce5c67daa3188a348ece8c02a0765039; 3f29cc82a84c23cfd12b903029dd26002ca825f5 преди c88c150a467fcb670a1608e2272beeee3e86df6e; 172d038b7c4d3cfa9fc5ac210577c5c4f8256320; 6.6.160 преди 6.7
• Linux Linux: 6.9; преди 6.9; 6.11.4 до 6.11.*; 6.12 до *

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2024-50043
• https://nvd.nist.gov/vuln/detail/CVE-2024-50043
• https://git.kernel.org/stable/c/7ca9e472ce5c67daa3188a348ece8c02a0765039
• https://git.kernel.org/stable/c/c88c150a467fcb670a1608e2272beeee3e86df6e