CVE-2026-63800

CVE CVE-2026-63800EUVD EUVD-2026-45466Published 2026-07-19T12:02:06.000ZLast changed 2026-08-05T12:35:48.000ZCVSS 9.8

What the advisory describes

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).

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 5.10.9 <5.10.260; 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 <7e37e9b3e82ade881e1798e2f4fcc54aff7793c1; 5.4.91 <5.5; 06f58dbc49a23c99e5c0f246879ed16667f7bf8f <4ad8b9a85dbf57ca532ee9e65ad7e6498bfbbf98; patch: 0; patch: 7.2-rc1; 5.11; 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 <2883ddd7542b4437a2ab4908fe2773f690e20889; 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 <9645aaf689aff57427ece3b9fa47d5b5399417f4; patch: 6.18.38; 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 <200e7637f4d6a1342987045eea72641524f909dc; patch: 6.12.95; patch: 5.15.211; 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 <9c0fb5c09ae5bd68dc0038692af8127029cb0385; aa2399f55eff4ec78330bb6fe55f9df53e5cae0c; patch: 7.1.3; 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 <13e198a90ca4050f4bee8a3f23680389a6563ccc; patch: 6.1.177; 2c8d5fc37fe2384a9bdb6965443ab9224d46f704 <1f24b8302c77dcaf79c64c073877a3b9f4dd25d2; patch: 5.10.260; patch: 6.6.144

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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