{"id":"CVE-2026-74375","state":"PUBLISHED","title":"md/raid1,raid10: fix deadlock in read error recovery path","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1,raid10: fix deadlock in read error recovery path\n\nraid1d and raid10d may resubmit a split md cloned bio while handling\na read error. In this case, resubmitting the bio can lead to a deadlock\nif the array is suspended before md_handle_request() acquires an\nactive_io reference via percpu_ref_tryget_live().\n\nSince the cloned bio already holds an active_io reference,\ntrying to acquire another reference via percpu_ref_tryget_live()\ncan lead to a deadlock while the array is suspended.\n\nFix this by using percpu_ref_get() for md cloned bios.","publishedAt":"2026-08-15T05:58:54.335Z","updatedAt":"2026-10-21T12:45:32.765Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"923a6f3172a362d6b2ff12386e376e0e47188f78","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"0889242775340e2c5b69b1590bd71335dd4fdeda","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"ea2d1d2ebf60b70b602a92261a567d5fc4575eab","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"38777f014c37972868f1733a651c85288bb8a757","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"7b15c24f805339a585cfe7d72f446b7e88b9bcc0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/md.c","drivers/md/md.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","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/md/md.c","drivers/md/md.h"]}],"references":["https://git.kernel.org/stable/c/923a6f3172a362d6b2ff12386e376e0e47188f78","https://git.kernel.org/stable/c/0889242775340e2c5b69b1590bd71335dd4fdeda","https://git.kernel.org/stable/c/ea2d1d2ebf60b70b602a92261a567d5fc4575eab","https://git.kernel.org/stable/c/38777f014c37972868f1733a651c85288bb8a757","https://git.kernel.org/stable/c/7b15c24f805339a585cfe7d72f446b7e88b9bcc0"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/74xxx/CVE-2026-74375.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74375","state":"PUBLISHED","datePublished":"2026-08-15T05:58:54.335Z","dateUpdated":"2026-10-21T12:45:32.765Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-15T05:44:03.889Z"},"containers":{"cna":{"title":"md/raid1,raid10: fix deadlock in read error recovery path","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmd/raid1,raid10: fix deadlock in read error recovery path\n\nraid1d and raid10d may resubmit a split md cloned bio while handling\na read error. In this case, resubmitting the bio can lead to a deadlock\nif the array is suspended before md_handle_request() acquires an\nactive_io reference via percpu_ref_tryget_live().\n\nSince the cloned bio already holds an active_io reference,\ntrying to acquire another reference via percpu_ref_tryget_live()\ncan lead to a deadlock while the array is suspended.\n\nFix this by using percpu_ref_get() for md cloned bios."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"923a6f3172a362d6b2ff12386e376e0e47188f78","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"0889242775340e2c5b69b1590bd71335dd4fdeda","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"ea2d1d2ebf60b70b602a92261a567d5fc4575eab","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"38777f014c37972868f1733a651c85288bb8a757","versionType":"git"},{"version":"bb2a9acefaf9ce5bbc1e70f407e34599233d0243","status":"affected","lessThan":"7b15c24f805339a585cfe7d72f446b7e88b9bcc0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/md/md.c","drivers/md/md.h"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.6","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.6","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","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/md/md.c","drivers/md/md.h"]}],"references":[{"url":"https://git.kernel.org/stable/c/923a6f3172a362d6b2ff12386e376e0e47188f78"},{"url":"https://git.kernel.org/stable/c/0889242775340e2c5b69b1590bd71335dd4fdeda"},{"url":"https://git.kernel.org/stable/c/ea2d1d2ebf60b70b602a92261a567d5fc4575eab"},{"url":"https://git.kernel.org/stable/c/38777f014c37972868f1733a651c85288bb8a757"},{"url":"https://git.kernel.org/stable/c/7b15c24f805339a585cfe7d72f446b7e88b9bcc0"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-21T12:45:32.765Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}