NetSight
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critical9.8

CVE-2026-63800

In the Linux kernel, the following vulnerability has been resolved: pNFS: Fix use-after-free in pnfs_update_layout() When hitting the NFS_LAYOUT_RETURN branch …

Impact

In the Linux kernel, the following vulnerability has been resolved: pNFS: Fix use-after-free in pnfs_update_layout() When hitting the NFS_LAYOUT_RETURN branch in pnfs_update_layout(), the code calls pnfs_prepare_to_retry_layoutget(lo). If it succeeds, pnfs_put_layout_hdr(lo) is called before trace_pnfs_update_layout(), which still references 'lo'. This results in a use-after-free when the tracepoint accesses lo's fields. Fix this by moving the tracepoint call before pnfs_put_layout_hdr(lo).

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 5.4.91 before 5.5
from 5.10.9 before 5.10.260
from 5.11.1 before 5.15.211
from 5.16 before 6.1.177
from 6.2 before 6.6.144
from 6.7 before 6.12.95

Weakness classification

CWE-416

References