{"id":"CVE-2026-93821","state":"PUBLISHED","title":"PCI: altera: Protect root bus removal with rescan lock","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: altera: Protect root bus removal with rescan lock\n\nHold the pci_rescan_remove_lock lock while stopping and removing a root bus\nto avoid racing with concurrent rescan or hotplug operations triggered via\nsysfs.  Such races may lead to use-after-free issues or system crashes.\n\n[bhelgaas: commit log]","publishedAt":"2026-09-24T16:02:59.826Z","updatedAt":"2026-10-03T10:57:52.467Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22","status":"affected","lessThan":"cf9d84d1b6a7c3f3780c043df220a7e9e38137eb","versionType":"git"},{"version":"ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22","status":"affected","lessThan":"fc462f1bdeaea9789928cbfdf5e069ee559c7642","versionType":"git"},{"version":"ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22","status":"affected","lessThan":"442b7f2a093b4a75f8963aaa7cbb2b8df35a6ac3","versionType":"git"},{"version":"ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22","status":"affected","lessThan":"4b69c63cc247fc0f499fbd11076fee9c2a6e6fd7","versionType":"git"},{"version":"ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22","status":"affected","lessThan":"c0cd65906e5f7e293ef2568c9524cc0a918333c3","versionType":"git"},{"version":"ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22","status":"affected","lessThan":"7cbb8f2750d91e64caff89e164ac8280bb80bedc","versionType":"git"},{"version":"ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22","status":"affected","lessThan":"a8759c8ac48c0419f5899e95a6ffc611b07c965b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pci/controller/pcie-altera.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.3","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pci/controller/pcie-altera.c"]}],"references":["https://git.kernel.org/stable/c/cf9d84d1b6a7c3f3780c043df220a7e9e38137eb","https://git.kernel.org/stable/c/fc462f1bdeaea9789928cbfdf5e069ee559c7642","https://git.kernel.org/stable/c/442b7f2a093b4a75f8963aaa7cbb2b8df35a6ac3","https://git.kernel.org/stable/c/4b69c63cc247fc0f499fbd11076fee9c2a6e6fd7","https://git.kernel.org/stable/c/c0cd65906e5f7e293ef2568c9524cc0a918333c3","https://git.kernel.org/stable/c/7cbb8f2750d91e64caff89e164ac8280bb80bedc","https://git.kernel.org/stable/c/a8759c8ac48c0419f5899e95a6ffc611b07c965b"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93821.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93821","state":"PUBLISHED","datePublished":"2026-09-24T16:02:59.826Z","dateUpdated":"2026-10-03T10:57:52.467Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-18T17:59:28.791Z"},"containers":{"cna":{"title":"PCI: altera: Protect root bus removal with rescan lock","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: altera: Protect root bus removal with rescan lock\n\nHold the pci_rescan_remove_lock lock while stopping and removing a root bus\nto avoid racing with concurrent rescan or hotplug operations triggered via\nsysfs.  Such races may lead to use-after-free issues or system crashes.\n\n[bhelgaas: commit log]"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22","status":"affected","lessThan":"cf9d84d1b6a7c3f3780c043df220a7e9e38137eb","versionType":"git"},{"version":"ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22","status":"affected","lessThan":"fc462f1bdeaea9789928cbfdf5e069ee559c7642","versionType":"git"},{"version":"ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22","status":"affected","lessThan":"442b7f2a093b4a75f8963aaa7cbb2b8df35a6ac3","versionType":"git"},{"version":"ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22","status":"affected","lessThan":"4b69c63cc247fc0f499fbd11076fee9c2a6e6fd7","versionType":"git"},{"version":"ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22","status":"affected","lessThan":"c0cd65906e5f7e293ef2568c9524cc0a918333c3","versionType":"git"},{"version":"ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22","status":"affected","lessThan":"7cbb8f2750d91e64caff89e164ac8280bb80bedc","versionType":"git"},{"version":"ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22","status":"affected","lessThan":"a8759c8ac48c0419f5899e95a6ffc611b07c965b","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pci/controller/pcie-altera.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.3","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.3","versionType":"semver"},{"version":"5.10.271","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.222","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.189","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.158","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.111","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.53","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pci/controller/pcie-altera.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/cf9d84d1b6a7c3f3780c043df220a7e9e38137eb"},{"url":"https://git.kernel.org/stable/c/fc462f1bdeaea9789928cbfdf5e069ee559c7642"},{"url":"https://git.kernel.org/stable/c/442b7f2a093b4a75f8963aaa7cbb2b8df35a6ac3"},{"url":"https://git.kernel.org/stable/c/4b69c63cc247fc0f499fbd11076fee9c2a6e6fd7"},{"url":"https://git.kernel.org/stable/c/c0cd65906e5f7e293ef2568c9524cc0a918333c3"},{"url":"https://git.kernel.org/stable/c/7cbb8f2750d91e64caff89e164ac8280bb80bedc"},{"url":"https://git.kernel.org/stable/c/a8759c8ac48c0419f5899e95a6ffc611b07c965b"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-03T10:57:52.467Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.3","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}