CVE-2023-54041
In the Linux kernel, the following vulnerability has been resolved: io_uring: fix memory leak when removing provided buffers When removing provided buffers, io_buffer structs are not being disposed of, leading to a memory leak. They can't be freed individually, because they are allocated in page-sized groups. They need to be added to some free list instead, such as io_buffers_cache. All callers already hold the lock protecting it, apart from when destroying buffers, so had to extend the lock there.
Affected versions
Linux kernel versions
5.18
and later are affected. Fixed in
6.1.24,
6.2.11,
6.3
and their respective stable series.
References
The following references provide additional information about CVE-2023-54041 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
-
PatchKernel patch commithttps://git.kernel.org/stable/c/ac48787f58d1068f4e06d627c1135784d64b4c72
-
PatchKernel patch commithttps://git.kernel.org/stable/c/b4a72c0589fdea6259720375426179888969d6a2
-
PatchKernel patch commithttps://git.kernel.org/stable/c/c117c15927772d1624c29c092b6bd3f47c7faa48
Frequently asked questions
-
What is CVE-2023-54041?
CVE-2023-54041 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 5.18 onward and has been patched in 6.1.24, 6.2.11 and 6.3. CVE-2023-54041 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2023-54041?
Yes — CVE-2023-54041 has been patched. Fixed versions include 6.1.24, 6.2.11 and 6.3. If you are running Linux kernel 5.18 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2023-54041 actively exploited?
No — CVE-2023-54041 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.