CVE-2026-63800
pNFS: Fix use-after-free in pnfs_update_layout()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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).
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jul 19, 2026 |
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Affected Versions
Linux / Linux
06f58dbc49a23c99e5c0f246879ed16667f7bf8f < 4ad8b9a85dbf57ca532ee9e65ad7e6498bfbbf98 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 < 1f24b8302c77dcaf79c64c073877a3b9f4dd25d2 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 < 9c0fb5c09ae5bd68dc0038692af8127029cb0385 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 < 7e37e9b3e82ade881e1798e2f4fcc54aff7793c1 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 < 2883ddd7542b4437a2ab4908fe2773f690e20889 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 < 200e7637f4d6a1342987045eea72641524f909dc 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 < 9645aaf689aff57427ece3b9fa47d5b5399417f4 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 < 13e198a90ca4050f4bee8a3f23680389a6563ccc aa2399f55eff4ec78330bb6fe55f9df53e5cae0c 5.10.9 < 5.10.260 5.4.91 < 5.5
Linux / Linux
5.11
References
git.kernel.org: https://git.kernel.org/stable/c/4ad8b9a85dbf57ca532ee9e65ad7e6498bfbbf98 git.kernel.org: https://git.kernel.org/stable/c/1f24b8302c77dcaf79c64c073877a3b9f4dd25d2 git.kernel.org: https://git.kernel.org/stable/c/9c0fb5c09ae5bd68dc0038692af8127029cb0385 git.kernel.org: https://git.kernel.org/stable/c/7e37e9b3e82ade881e1798e2f4fcc54aff7793c1 git.kernel.org: https://git.kernel.org/stable/c/2883ddd7542b4437a2ab4908fe2773f690e20889 git.kernel.org: https://git.kernel.org/stable/c/200e7637f4d6a1342987045eea72641524f909dc git.kernel.org: https://git.kernel.org/stable/c/9645aaf689aff57427ece3b9fa47d5b5399417f4 git.kernel.org: https://git.kernel.org/stable/c/13e198a90ca4050f4bee8a3f23680389a6563ccc