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.
Metrics
CVSS 3.1 4.7/10
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 8acc3e228e1c90bd410f73597a4549e0409f22d6, < 08287df60bac5b008b6bcdb03053988335d3d282; >= ec23a86e060cbe30b62eb2955adc97c92d80cc4c, < 8846fd02c98da8b79e6343a20e6071be6f372180; >= 880265c77ac415090090d1fe72a188fee71cb458, < e4b13885e7ef1e64e45268feef1e5f0707c47e72; >= 880265c77ac415090090d1fe72a188fee71cb458, < 8ca65fa71024a1767a59ffbc6a6e2278af84735e; >= 880265c77ac415090090d1fe72a188fee71cb458, < 864a54c1243ed3ca60baa4bc492dede1361f4c83; >= 880265c77ac415090090d1fe72a188fee71cb458, < 1f4da20080718f258e189a2c5f515385fa393da6; >= 880265c77ac415090090d1fe72a188fee71cb458, < c01776287414ca43412d1319d2877cbad65444ac; f133819e24e78f3aaaa00e9fa2b816d5f73fd172; >= 5.10.124, < 5.10.240; >= 5.15.49, < 5.15.187; >= 5.18.6, < 5.19 |
| Linux | Linux | 5.19 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP | >= V3.1.5, < * |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP | >= V3.1.5, < * |
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
Timeline
- Published
- Jul 25, 2025
- Last modified
- Jul 30, 2026
- NVD status
- Modified