Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN We found a few different systems hung up in writeback waiting on the same page lock, and one task waiting on the NFS_LAYOUT_DRAIN bit in pnfs_update_layout(), however the pnfs_layout_hdr's plh_outstanding count was zero. It seems most likely that this is another race between the waiter and waker similar to commit ed0172af5d6f ("SUNRPC: Fix a race to wake a sync task"). Fix it up by applying the advised barrier.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.10.124, < 5.10.240 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/08287df60bac5b008b6bcdb03053988335d3d282Patch
- https://git.kernel.org/stable/c/1f4da20080718f258e189a2c5f515385fa393da6Patch
- https://git.kernel.org/stable/c/864a54c1243ed3ca60baa4bc492dede1361f4c83Patch
- https://git.kernel.org/stable/c/8846fd02c98da8b79e6343a20e6071be6f372180Patch
- https://git.kernel.org/stable/c/8ca65fa71024a1767a59ffbc6a6e2278af84735ePatch
- https://git.kernel.org/stable/c/c01776287414ca43412d1319d2877cbad65444acPatch
- https://git.kernel.org/stable/c/e4b13885e7ef1e64e45268feef1e5f0707c47e72Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
FAQ
What is CVE-2025-38393?
CVE-2025-38393 is a vulnerability with a CVSS score of 4.7 (MEDIUM). In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN We found a few different systems hung up in writeback waiting on the same page ...
How severe is CVE-2025-38393?
CVE-2025-38393 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-38393?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.