{"id":"CVE-2024-35974","state":"PUBLISHED","title":"block: fix q->blkg_list corruption during disk rebind","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix q->blkg_list corruption during disk rebind\n\nMultiple gendisk instances can allocated/added for single request queue\nin case of disk rebind. blkg may still stay in q->blkg_list when calling\nblkcg_init_disk() for rebind, then q->blkg_list becomes corrupted.\n\nFix the list corruption issue by:\n\n- add blkg_init_queue() to initialize q->blkg_list & q->blkcg_mutex only\n- move calling blkg_init_queue() into blk_alloc_queue()\n\nThe list corruption should be started since commit f1c006f1c685 (\"blk-cgroup:\nsynchronize pd_free_fn() from blkg_free_workfn() and blkcg_deactivate_policy()\")\nwhich delays removing blkg from q->blkg_list into blkg_free_workfn().","publishedAt":"2024-05-20T09:42:01.114Z","updatedAt":"2026-05-23T15:45:40.796Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"81c1188905f88b77743d1fdeeedfc8cb7b67787d","status":"affected","lessThan":"b5dae1cd0d8368b4338430ff93403df67f0b8bcc","versionType":"git"},{"version":"bfe46d2efe46c5c952f982e2ca94fe2ec5e58e2a","status":"affected","lessThan":"083b58373463a6e5ee60ecb135269348f68ad7df","versionType":"git"},{"version":"1059699f87eb0b3aa9d574b91a572d534897134a","status":"affected","lessThan":"740ffad95ca8033bd6e080ed337655b13b4d38ac","versionType":"git"},{"version":"1059699f87eb0b3aa9d574b91a572d534897134a","status":"affected","lessThan":"858c489d81d659af17a4d11cfaad2afb42e47a76","versionType":"git"},{"version":"1059699f87eb0b3aa9d574b91a572d534897134a","status":"affected","lessThan":"8b8ace080319a866f5dfe9da8e665ae51d971c54","versionType":"git"},{"version":"6.1.16","status":"affected","lessThan":"6.1.17","versionType":"semver"},{"version":"6.2.3","status":"affected","lessThan":"6.2.4","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-cgroup.c","block/blk-cgroup.h","block/blk-core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.18","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.18","versionType":"semver"},{"version":"6.1.17","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.2.4","status":"unaffected","lessThanOrEqual":"6.2.*","versionType":"semver"},{"version":"6.6.28","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.8.7","status":"unaffected","lessThanOrEqual":"6.8.*","versionType":"semver"},{"version":"6.9","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-cgroup.c","block/blk-cgroup.h","block/blk-core.c"]}],"references":["https://git.kernel.org/stable/c/b5dae1cd0d8368b4338430ff93403df67f0b8bcc","https://git.kernel.org/stable/c/083b58373463a6e5ee60ecb135269348f68ad7df","https://git.kernel.org/stable/c/740ffad95ca8033bd6e080ed337655b13b4d38ac","https://git.kernel.org/stable/c/858c489d81d659af17a4d11cfaad2afb42e47a76","https://git.kernel.org/stable/c/8b8ace080319a866f5dfe9da8e665ae51d971c54"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:30.303Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/35xxx/CVE-2024-35974.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-35974","state":"PUBLISHED","datePublished":"2024-05-20T09:42:01.114Z","dateUpdated":"2026-05-23T15:45:40.796Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-05-17T13:50:33.143Z"},"containers":{"cna":{"title":"block: fix q->blkg_list corruption during disk rebind","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix q->blkg_list corruption during disk rebind\n\nMultiple gendisk instances can allocated/added for single request queue\nin case of disk rebind. blkg may still stay in q->blkg_list when calling\nblkcg_init_disk() for rebind, then q->blkg_list becomes corrupted.\n\nFix the list corruption issue by:\n\n- add blkg_init_queue() to initialize q->blkg_list & q->blkcg_mutex only\n- move calling blkg_init_queue() into blk_alloc_queue()\n\nThe list corruption should be started since commit f1c006f1c685 (\"blk-cgroup:\nsynchronize pd_free_fn() from blkg_free_workfn() and blkcg_deactivate_policy()\")\nwhich delays removing blkg from q->blkg_list into 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