Tracker / CVE-2026-63800
CVE-2026-63800
Critical 9.8
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 and versions
| linux | linux_kernel |
|---|---|
| linux | linux_kernel · 5.10.9 → 5.10.260 |
| linux | linux_kernel · 5.11.1 → 5.15.211 |
| linux | linux_kernel · 5.16 → 6.1.177 |
| linux | linux_kernel · 5.4.91 → 5.5 |
| linux | linux_kernel · 6.13 → 6.18.38 |
| linux | linux_kernel · 6.19 → 7.1.3 |
| linux | linux_kernel · 6.2 → 6.6.144 |
| linux | linux_kernel · 6.7 → 6.12.95 |
Analysis
This page is not indexable yet.Until it carries original analysis — what it actually exposes, how to check in two minutes whether a system was touched, what to do if it was — the page stays noindex. The database decides that, not the template.