cvedb.io
CVE-2026-63800
UNKNOWN · CVSS n/a
EPSS exploitation probability: 0%
Published 2026-07-19T12:16:52.553 · Last modified 2026-07-19T12:16:52.553

Summary

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).

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References

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