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CVE-2026-63800

Linux Kernel

Description

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).

CVSS 9.8EPSS 0.5%Risque 1.02
Voir la source
Publication
2026-07-19 12:16:52
Versions concernées
unknown
Type
Système d’exploitation
Dernière modification
2026-07-29 20:12:04
Vecteur
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Systèmes d’exploitation
Linux