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)").
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.6.51, < 6.6.133 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/9a3a2ae5efbbcaed37551218abed94e23c537157Patch
- https://git.kernel.org/stable/c/a71874379ec8c6e788a61d71b3ad014a8d9a5c08Patch
- https://git.kernel.org/stable/c/d151b94967c8247005435b63fc60f8f4baa320daPatch
FAQ
What is CVE-2024-14027?
CVE-2024-14027 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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?
CVE-2024-14027 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-14027?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.