4.7

CVE-2025-38393

NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.10.124 < 5.10.240
Linux ≫ Linux Kernel Version >= 5.15.49 < 5.15.187
Linux ≫ Linux Kernel Version >= 5.18.6 < 5.19
Linux ≫ Linux Kernel Version >= 5.19.1 < 6.1.144
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.97
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.37
Linux ≫ Linux Kernel Version >= 6.13 < 6.15.6
Linux ≫ Linux Kernel Version5.19 Update-
Linux ≫ Linux Kernel Version5.19 Updaterc3
Linux ≫ Linux Kernel Version5.19 Updaterc4
Linux ≫ Linux Kernel Version5.19 Updaterc5
Linux ≫ Linux Kernel Version5.19 Updaterc6
Linux ≫ Linux Kernel Version5.19 Updaterc7
Linux ≫ Linux Kernel Version5.19 Updaterc8
Linux ≫ Linux Kernel Version6.16 Updaterc1
Linux ≫ Linux Kernel Version6.16 Updaterc2
Linux ≫ Linux Kernel Version6.16 Updaterc3
Linux ≫ Linux Kernel Version6.16 Updaterc4
Debian ≫ Debian Linux Version11.0
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.12% 0.024
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 4.7 1 3.6
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

https://git.kernel.org/stable/c/08287df60bac5b008b6bcdb03053988335d3d282
Patch
https://git.kernel.org/stable/c/1f4da20080718f258e189a2c5f515385fa393da6
Patch
https://git.kernel.org/stable/c/864a54c1243ed3ca60baa4bc492dede1361f4c83
Patch
https://git.kernel.org/stable/c/8846fd02c98da8b79e6343a20e6071be6f372180
Patch
https://git.kernel.org/stable/c/8ca65fa71024a1767a59ffbc6a6e2278af84735e
Patch
https://git.kernel.org/stable/c/c01776287414ca43412d1319d2877cbad65444ac
Patch
https://git.kernel.org/stable/c/e4b13885e7ef1e64e45268feef1e5f0707c47e72
Patch
https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-082556.html