Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix slab-use-after-free in qd_put Commit a475c5dd16e5 ("gfs2: Free quota data objects synchronously") started freeing quota data objects during filesystem shutdown instead of putting them back onto the LRU list, but it failed to remove these objects from the LRU list, causing LRU list corruption. This caused use-after-free when the shrinker (gfs2_qd_shrink_scan) tried to access already-freed objects on the LRU list. Fix this by removing qd objects from the LRU list before freeing them in qd_put(). Initial fix from Deepanshu Kartikey <[email protected]>.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 6.6, < 6.12.75 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/1d47922b98046b8070a77347fb883a6523792803Patch
- https://git.kernel.org/stable/c/22150a7d401d9e9169b9b68e05bed95f7f49bf69Patch
- https://git.kernel.org/stable/c/80fff26d7a0c3926b511661c27eecc811a420eefPatch
- https://git.kernel.org/stable/c/ca7c67bdd293089b3483f18886d6b2d0037d2ad9Patch
FAQ
What is CVE-2026-45861?
CVE-2026-45861 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix slab-use-after-free in qd_put Commit a475c5dd16e5 ("gfs2: Free quota data objects synchronously") started freeing quota ...
How severe is CVE-2026-45861?
CVE-2026-45861 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45861?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.