Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: free pages on error in btrfs_uring_read_extent() In this function the 'pages' object is never freed in the hopes that it is picked up by btrfs_uring_read_finished() whenever that executes in the future. But that's just the happy path. Along the way previous allocations might have gone wrong, or we might not get -EIOCBQUEUED from btrfs_encoded_read_regular_fill_pages(). In all these cases, we go to a cleanup section that frees all memory allocated by this function without assuming any deferred execution, and this also needs to happen for the 'pages' allocation.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.13.1, < 6.18.17 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/3f501412f2079ca14bf68a18d80a2b7a823f1f64Patch
- https://git.kernel.org/stable/c/628895890b0c9ac9129129e89455da7db95ba343Patch
- https://git.kernel.org/stable/c/d4f210de01eaccac61eee657f676045ef9771d07Patch
FAQ
What is CVE-2026-23423?
CVE-2026-23423 is a vulnerability with a CVSS score of 5.5 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: btrfs: free pages on error in btrfs_uring_read_extent() In this function the 'pages' object is never freed in the hopes that it is...
How severe is CVE-2026-23423?
CVE-2026-23423 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-2026-23423?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.