PCI: altera: Protect root bus removal with rescan lock

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Summary

CVECVE-2026-93821
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-24 17:17:15 UTC
Updated2026-09-25 13:17:22 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: PCI: altera: Protect root bus removal with rescan lock Hold the pci_rescan_remove_lock lock while stopping and removing a root bus to avoid racing with concurrent rescan or hotplug operations triggered via sysfs. Such races may lead to use-after-free issues or system crashes. [bhelgaas: commit log]

Risk And Classification

EPSS: 0.001660000 probability, percentile 0.051770000 (date 2026-09-25)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22 c0cd65906e5f7e293ef2568c9524cc0a918333c3 git Not specified
CNA Linux Linux affected ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22 7cbb8f2750d91e64caff89e164ac8280bb80bedc git Not specified
CNA Linux Linux affected ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22 a8759c8ac48c0419f5899e95a6ffc611b07c965b git Not specified
CNA Linux Linux affected 5.3 Not specified
CNA Linux Linux unaffected 5.3 semver Not specified
CNA Linux Linux unaffected 6.12.111 6.12.* semver Not specified
CNA Linux Linux unaffected 6.18.53 6.18.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/c0cd65906e5f7e293ef2568c9524cc0a918333c3 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/7cbb8f2750d91e64caff89e164ac8280bb80bedc 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/a8759c8ac48c0419f5899e95a6ffc611b07c965b 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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