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7.5 High

CVE-2025-38393 In the Linux kernel, the following vulnerability has been resolved: NFSv4/pNFS: Fix a race to wake on NFS_LAYOUT_DRAIN…

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.

Affected products and versions

Product Affected versions Fixed in
Linux 6.16 earliest → < 6.16 6.16
Linux 6.15 earliest → < 6.15.6 6.15.6
Linux 6.12 earliest → < 6.12.37 6.12.37
Linux 6.6 earliest → < 6.6.97 6.6.97
Linux 6.1 earliest → < 6.1.144 6.1.144
Linux 5.19 No fix stated
Linux 5.15 earliest → < 5.15.187 5.15.187
Linux 5.10 earliest → < 5.10.240 5.10.240
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP 3.1 3.1.5 → latest No fix stated
Show the 2 other branches
Product Affected versions Fixed in
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP 3.1 3.1.5 → latest No fix stated
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP 3.1 3.1.5 → latest No fix stated

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