CVE-2024-14027
In the Linux kernel, the following vulnerability has been resolved: fs/xattr: missing fdput() in fremovexattr error path In the Linux kernel, the fremovexattr() syscall calls fdget() to acquire a file reference but returns early without calling fdput() when strncpy_from_user() fails on the name argument. In multi-threaded processes where fdget() takes the slow path, this permanently leaks one file reference per call, pinning the struct file and associated kernel objects in memory. An unprivileged local user can exploit this to cause kernel memory exhaustion. The issue was inadvertently fixed by commit a71874379ec8 ("xattr: switch to CLASS(fd)").
Affected versions
Linux kernel versions
6.6.51,
6.10.10,
6.11
and later are affected. Fixed in
6.6.133,
6.12.77,
6.13
and their respective stable series.
References
The following references provide additional information about CVE-2024-14027 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/9a3a2ae5efbbcaed37551218abed94e23c537157
-
PatchKernel patch commithttps://git.kernel.org/stable/c/a71874379ec8c6e788a61d71b3ad014a8d9a5c08
-
PatchKernel patch commithttps://git.kernel.org/stable/c/d151b94967c8247005435b63fc60f8f4baa320da
Frequently asked questions
-
What is CVE-2024-14027?
CVE-2024-14027 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.6.51 onward and has been patched in 6.6.133, 6.12.77 and 6.13. CVE-2024-14027 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2024-14027?
Yes — CVE-2024-14027 has been patched. Fixed versions include 6.6.133, 6.12.77 and 6.13. If you are running Linux kernel 6.6.51 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2024-14027 actively exploited?
No — CVE-2024-14027 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.