CRITICALVulnerability
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 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).
Properties
- severity
- CRITICAL
- score
- 9.8
- cve_id
- CVE-2026-63800
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- published_at
- 2026-07-19T12:16:52.553
- last_modified
- 2026-08-17T05:17:16.393
Related Entities (8)
HAS_WEAKNESS (1)
→[Weakness]Use After Free
DESCRIBED_BY (1)
→[Source]NVD
AFFECTS_PRODUCT (6)
→[Product]
→[Product]
→[Product]
→[Product]
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