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).

https://git.kernel.org/stable/c/13e198a90ca4050f4bee8a3f23680389a6563ccc

https://git.kernel.org/stable/c/1f24b8302c77dcaf79c64c073877a3b9f4dd25d2

https://git.kernel.org/stable/c/200e7637f4d6a1342987045eea72641524f909dc

https://git.kernel.org/stable/c/2883ddd7542b4437a2ab4908fe2773f690e20889

https://git.kernel.org/stable/c/4ad8b9a85dbf57ca532ee9e65ad7e6498bfbbf98

https://git.kernel.org/stable/c/7e37e9b3e82ade881e1798e2f4fcc54aff7793c1

https://git.kernel.org/stable/c/9645aaf689aff57427ece3b9fa47d5b5399417f4

https://git.kernel.org/stable/c/9c0fb5c09ae5bd68dc0038692af8127029cb0385

[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","programFiles":["fs/nfs/pnfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"06f58dbc49a23c99e5c0f246879ed16667f7bf8f","lessThan":"4ad8b9a85dbf57ca532ee9e65ad7e6498bfbbf98","versionType":"git","status":"affected"},{"version":"2c8d5fc37fe2384a9bdb6965443ab9224d46f704","lessThan":"1f24b8302c77dcaf79c64c073877a3b9f4dd25d2","versionType":"git","status":"affected"},{"version":"2c8d5fc37fe2384a9bdb6965443ab9224d46f704","lessThan":"9c0fb5c09ae5bd68dc0038692af8127029cb0385","versionType":"git","status":"affected"},{"version":"2c8d5fc37fe2384a9bdb6965443ab9224d46f704","lessThan":"7e37e9b3e82ade881e1798e2f4fcc54aff7793c1","versionType":"git","status":"affected"},{"version":"2c8d5fc37fe2384a9bdb6965443ab9224d46f704","lessThan":"2883ddd7542b4437a2ab4908fe2773f690e20889","versionType":"git","status":"affected"},{"version":"2c8d5fc37fe2384a9bdb6965443ab9224d46f704","lessThan":"200e7637f4d6a1342987045eea72641524f909dc","versionType":"git","status":"affected"},{"version":"2c8d5fc37fe2384a9bdb6965443ab9224d46f704","lessThan":"9645aaf689aff57427ece3b9fa47d5b5399417f4","versionType":"git","status":"affected"},{"version":"2c8d5fc37fe2384a9bdb6965443ab9224d46f704","lessThan":"13e198a90ca4050f4bee8a3f23680389a6563ccc","versionType":"git","status":"affected"},{"version":"aa2399f55eff4ec78330bb6fe55f9df53e5cae0c","versionType":"git","status":"affected"},{"version":"5.10.9","lessThan":"5.10.260","versionType":"semver","status":"affected"},{"version":"5.4.91","lessThan":"5.5","versionType":"semver","status":"affected"}]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","programFiles":["fs/nfs/pnfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","versions":[{"version":"5.11","status":"affected"},{"version":"0","lessThan":"5.11","versionType":"semver","status":"unaffected"},{"version":"5.10.260","lessThanOrEqual":"5.10.*","versionType":"semver","status":"unaffected"},{"version":"5.15.211","lessThanOrEqual":"5.15.*","versionType":"semver","status":"unaffected"},{"version":"6.1.177","lessThanOrEqual":"6.1.*","versionType":"semver","status":"unaffected"},{"version":"6.6.144","lessThanOrEqual":"6.6.*","versionType":"semver","status":"unaffected"},{"version":"6.12.95","lessThanOrEqual":"6.12.*","versionType":"semver","status":"unaffected"},{"version":"6.18.38","lessThanOrEqual":"6.18.*","versionType":"semver","status":"unaffected"},{"version":"7.1.3","lessThanOrEqual":"7.1.*","versionType":"semver","status":"unaffected"},{"version":"7.2-rc1","lessThanOrEqual":"*","versionType":"original_commit_for_fix","status":"unaffected"}]}]