sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-64226
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-24 16:16:51 UTC
Updated2026-07-24 16:16:51 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: sched_ext: Avoid UAF in scx_root_enable_workfn() init failure path In scx_root_enable_workfn(), put_task_struct(p) is called before scx_error() dereferences p->comm and p->pid. If the iterator's reference is the last drop, the task is freed synchronously and the deref becomes a UAF. Move put_task_struct() past scx_error().

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected f0e1a0643a59bf1f922fa209cec86a170b784f3f cf396941901858b0de426cdcd3974eea6a02c98c git Not specified
CNA Linux Linux affected f0e1a0643a59bf1f922fa209cec86a170b784f3f 45c7c4e3db8b700307313c035ea08be829a7f21b git Not specified
CNA Linux Linux affected f0e1a0643a59bf1f922fa209cec86a170b784f3f 57e19ba3f58a67eb924022a5a60b67fd08e5cbbd git Not specified
CNA Linux Linux affected f0e1a0643a59bf1f922fa209cec86a170b784f3f 9a415cc53711f2238e0f0ca8a6bcc796c003b127 git Not specified
CNA Linux Linux affected 6.12 Not specified
CNA Linux Linux unaffected 6.12 semver Not specified
CNA Linux Linux unaffected 6.12.92 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.34 6.18.* semver Not specified
CNA Linux Linux unaffected 7.0.11 7.0.* semver Not specified
CNA Linux Linux unaffected 7.1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/9a415cc53711f2238e0f0ca8a6bcc796c003b127 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/57e19ba3f58a67eb924022a5a60b67fd08e5cbbd 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/45c7c4e3db8b700307313c035ea08be829a7f21b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/cf396941901858b0de426cdcd3974eea6a02c98c 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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