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high7.5

CVE-2025-38393

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…

Impact

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

VendorProductAffected versions
LinuxLinux Kernel
from 5.10.124 before 5.10.240
from 5.15.49 before 5.15.187
from 5.18.6 before 5.19
from 5.19.1 before 6.1.144
from 6.2 before 6.6.97
from 6.7 before 6.12.37
DebianDebian Linux
Version 11.0

Weakness classification

CWE-362

References