Vulnerability Description
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)").
References
- https://git.kernel.org/stable/c/9a3a2ae5efbbcaed37551218abed94e23c537157
- https://git.kernel.org/stable/c/a71874379ec8c6e788a61d71b3ad014a8d9a5c08
- https://git.kernel.org/stable/c/d151b94967c8247005435b63fc60f8f4baa320da
FAQ
What is CVE-2024-14027?
CVE-2024-14027 is a documented vulnerability. 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 fi...
How severe is CVE-2024-14027?
CVSS scoring is not yet available for CVE-2024-14027. Check NVD for updates.
Is there a patch for CVE-2024-14027?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.