{"id":"CVE-2026-93819","state":"PUBLISHED","title":"PCI: mediatek: Protect root bus removal with rescan lock","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: mediatek: 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":"2026-09-24T16:02:56.394Z","updatedAt":"2026-10-03T10:57:50.269Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"031337ace2d1c22a447da6390716fe92592cdd6e","status":"affected","lessThan":"d54417acb22d9e8bc404a8598330bc9729ee7146","versionType":"git"},{"version":"031337ace2d1c22a447da6390716fe92592cdd6e","status":"affected","lessThan":"5dd379acfa38c516e904bcfa693502cd585a0bba","versionType":"git"},{"version":"031337ace2d1c22a447da6390716fe92592cdd6e","status":"affected","lessThan":"8d910649725955435c6a807944108bca0570712d","versionType":"git"},{"version":"031337ace2d1c22a447da6390716fe92592cdd6e","status":"affected","lessThan":"31e33dcc896527b3ad790fdc6aa6b8d2995c078b","versionType":"git"},{"version":"031337ace2d1c22a447da6390716fe92592cdd6e","status":"affected","lessThan":"c57b971765f835138fa2fce3f2a171b004cbb114","versionType":"git"},{"version":"031337ace2d1c22a447da6390716fe92592cdd6e","status":"affected","lessThan":"a568939487dcbc1a3e341208585e224be897e25e","versionType":"git"},{"version":"031337ace2d1c22a447da6390716fe92592cdd6e","status":"affected","lessThan":"a29812a55da8d0dbeb071b26ac428c338e3fc389","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pci/controller/pcie-mediatek.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.20","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.20","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-mediatek.c"]}],"references":["https://git.kernel.org/stable/c/d54417acb22d9e8bc404a8598330bc9729ee7146","https://git.kernel.org/stable/c/5dd379acfa38c516e904bcfa693502cd585a0bba","https://git.kernel.org/stable/c/8d910649725955435c6a807944108bca0570712d","https://git.kernel.org/stable/c/31e33dcc896527b3ad790fdc6aa6b8d2995c078b","https://git.kernel.org/stable/c/c57b971765f835138fa2fce3f2a171b004cbb114","https://git.kernel.org/stable/c/a568939487dcbc1a3e341208585e224be897e25e","https://git.kernel.org/stable/c/a29812a55da8d0dbeb071b26ac428c338e3fc389"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/93xxx/CVE-2026-93819.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93819","state":"PUBLISHED","datePublished":"2026-09-24T16:02:56.394Z","dateUpdated":"2026-10-03T10:57:50.269Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-18T17:59:28.791Z"},"containers":{"cna":{"title":"PCI: mediatek: Protect root bus removal with rescan lock","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: mediatek: 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":"031337ace2d1c22a447da6390716fe92592cdd6e","status":"affected","lessThan":"d54417acb22d9e8bc404a8598330bc9729ee7146","versionType":"git"},{"version":"031337ace2d1c22a447da6390716fe92592cdd6e","status":"affected","lessThan":"5dd379acfa38c516e904bcfa693502cd585a0bba","versionType":"git"},{"version":"031337ace2d1c22a447da6390716fe92592cdd6e","status":"affected","lessThan":"8d910649725955435c6a807944108bca0570712d","versionType":"git"},{"version":"031337ace2d1c22a447da6390716fe92592cdd6e","status":"affected","lessThan":"31e33dcc896527b3ad790fdc6aa6b8d2995c078b","versionType":"git"},{"version":"031337ace2d1c22a447da6390716fe92592cdd6e","status":"affected","lessThan":"c57b971765f835138fa2fce3f2a171b004cbb114","versionType":"git"},{"version":"031337ace2d1c22a447da6390716fe92592cdd6e","status":"affected","lessThan":"a568939487dcbc1a3e341208585e224be897e25e","versionType":"git"},{"version":"031337ace2d1c22a447da6390716fe92592cdd6e","status":"affected","lessThan":"a29812a55da8d0dbeb071b26ac428c338e3fc389","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/pci/controller/pcie-mediatek.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"4.20","status":"affected"},{"version":"0","status":"unaffected","lessThan":"4.20","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-mediatek.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/d54417acb22d9e8bc404a8598330bc9729ee7146"},{"url":"https://git.kernel.org/stable/c/5dd379acfa38c516e904bcfa693502cd585a0bba"},{"url":"https://git.kernel.org/stable/c/8d910649725955435c6a807944108bca0570712d"},{"url":"https://git.kernel.org/stable/c/31e33dcc896527b3ad790fdc6aa6b8d2995c078b"},{"url":"https://git.kernel.org/stable/c/c57b971765f835138fa2fce3f2a171b004cbb114"},{"url":"https://git.kernel.org/stable/c/a568939487dcbc1a3e341208585e224be897e25e"},{"url":"https://git.kernel.org/stable/c/a29812a55da8d0dbeb071b26ac428c338e3fc389"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-03T10:57:50.269Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.12.111"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"6.18.53"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.20","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}