CVE-2025-38393
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 0.4% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.4% in the next 30 days (EPSS).
- Severity: 7.5 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.4% · EPSS, next 30 days
- Weakness
- CWE-362 · Race condition
- Record status
- Modified
Affected
- Linux Kernel < 5.10.240
- Linux Kernel < 5.15.187
- Linux Kernel < 5.19
- Linux Kernel < 6.1.144
- Linux Kernel < 6.6.97
- Linux Kernel < 6.12.37
- Linux Kernel < 6.15.6
- Linux Kernel 5.19
Attack profile CVSS 3.1 · 7.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2025-38393.md and follow it. Check whether this project is affected by CVE-2025-38393. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://git.kernel.org/stable/c/08287df60bac5b008b6bcdb03053988335d3d282
- https://git.kernel.org/stable/c/1f4da20080718f258e189a2c5f515385fa393da6
- https://git.kernel.org/stable/c/864a54c1243ed3ca60baa4bc492dede1361f4c83
- https://git.kernel.org/stable/c/8846fd02c98da8b79e6343a20e6071be6f372180
- https://git.kernel.org/stable/c/8ca65fa71024a1767a59ffbc6a6e2278af84735e
- https://git.kernel.org/stable/c/c01776287414ca43412d1319d2877cbad65444ac
- https://git.kernel.org/stable/c/e4b13885e7ef1e64e45268feef1e5f0707c47e72
References
- https://git.kernel.org/stable/c/08287df60bac5b008b6bcdb03053988335d3d282
- https://git.kernel.org/stable/c/1f4da20080718f258e189a2c5f515385fa393da6
- https://git.kernel.org/stable/c/864a54c1243ed3ca60baa4bc492dede1361f4c83
- https://git.kernel.org/stable/c/8846fd02c98da8b79e6343a20e6071be6f372180
- https://git.kernel.org/stable/c/8ca65fa71024a1767a59ffbc6a6e2278af84735e
- https://git.kernel.org/stable/c/c01776287414ca43412d1319d2877cbad65444ac
- https://git.kernel.org/stable/c/e4b13885e7ef1e64e45268feef1e5f0707c47e72
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html