High 7.5Published Jul 25, 2025

CVE-2025-38393NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN

Updated under an hour ago (Oct 28, 2026, 2:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Not yet received
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 8acc3e228e1c90bd410f73597a4549e0409f22d6 before 08287df60bac5b008b6bcdb03053988335d3d282; from ec23a86e060cbe30b62eb2955adc97c92d80cc4c before 8846fd02c98da8b79e6343a20e6071be6f372180; from 880265c77ac415090090d1fe72a188fee71cb458 before e4b13885e7ef1e64e45268feef1e5f0707c47e72; 880265c77ac415090090d1fe72a188fee71cb458 builds before 8ca65fa71024a1767a59ffbc6a6e2278af84735e; 880265c77ac415090090d1fe72a188fee71cb458 builds before 864a54c1243ed3ca60baa4bc492dede1361f4c83; 880265c77ac415090090d1fe72a188fee71cb458 builds before 1f4da20080718f258e189a2c5f515385fa393da6; from 880265c77ac415090090d1fe72a188fee71cb458 before c01776287414ca43412d1319d2877cbad65444ac; f133819e24e78f3aaaa00e9fa2b816d5f73fd172; and 3 more ranges	CNA record
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP siemens:simatic_s7_1500_cpu_1518f_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP siemens:siplus_s7_1500_cpu_1518_4_pn_dp_mfp (from the name)	from V3.1.5	CISA ADP

References

References

https://git.kernel.org/stable/c/08287df60bac5b008b6bcdb03053988335d3d282
https://git.kernel.org/stable/c/8846fd02c98da8b79e6343a20e6071be6f372180
https://git.kernel.org/stable/c/e4b13885e7ef1e64e45268feef1e5f0707c47e72
https://git.kernel.org/stable/c/8ca65fa71024a1767a59ffbc6a6e2278af84735e
https://git.kernel.org/stable/c/864a54c1243ed3ca60baa4bc492dede1361f4c83
https://git.kernel.org/stable/c/1f4da20080718f258e189a2c5f515385fa393da6
https://git.kernel.org/stable/c/c01776287414ca43412d1319d2877cbad65444ac

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.