CVE-2026-63800
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).
Metadata
Severity & Metrics
No CVSS data available.
Affected products (2)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Linux | Linux | — | 06f58dbc49a23c99e5c0f246879ed16667f7bf8f < 4ad8b9a85dbf57ca532ee9e65ad7e6498bfbbf98, 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 < 1f24b8302c77dcaf79c64c073877a3b9f4dd25d2, 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 < 9c0fb5c09ae5bd68dc0038692af8127029cb0385, 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 < 7e37e9b3e82ade881e1798e2f4fcc54aff7793c1 … |
| Linux | Linux | — | 5.11, 0 < 5.11, 5.10.260 ≤ 5.10.*, 5.15.211 ≤ 5.15.* … |
References (8)
- https://git.kernel.org/stable/c/4ad8b9a85dbf57ca532ee9e65ad7e6498bfbbf98
- https://git.kernel.org/stable/c/1f24b8302c77dcaf79c64c073877a3b9f4dd25d2
- https://git.kernel.org/stable/c/9c0fb5c09ae5bd68dc0038692af8127029cb0385
- https://git.kernel.org/stable/c/7e37e9b3e82ade881e1798e2f4fcc54aff7793c1
- https://git.kernel.org/stable/c/2883ddd7542b4437a2ab4908fe2773f690e20889
- https://git.kernel.org/stable/c/200e7637f4d6a1342987045eea72641524f909dc
- https://git.kernel.org/stable/c/9645aaf689aff57427ece3b9fa47d5b5399417f4
- https://git.kernel.org/stable/c/13e198a90ca4050f4bee8a3f23680389a6563ccc