{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-40925","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-07-12T12:17:45.582Z","datePublished":"2024-07-12T12:25:05.747Z","dateUpdated":"2025-05-04T09:17:58.688Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T09:17:58.688Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix request.queuelist usage in flush\n\nFriedrich Weber reported a kernel crash problem and bisected to commit\n81ada09cc25e (\"blk-flush: reuse rq queuelist in flush state machine\").\n\nThe root cause is that we use \"list_move_tail(&rq->queuelist, pending)\"\nin the PREFLUSH/POSTFLUSH sequences. But rq->queuelist.next == xxx since\nit's popped out from plug->cached_rq in __blk_mq_alloc_requests_batch().\nWe don't initialize its queuelist just for this first request, although\nthe queuelist of all later popped requests will be initialized.\n\nFix it by changing to use \"list_add_tail(&rq->queuelist, pending)\" so\nrq->queuelist doesn't need to be initialized. It should be ok since rq\ncan't be on any list when PREFLUSH or POSTFLUSH, has no move actually.\n\nPlease note the commit 81ada09cc25e (\"blk-flush: reuse rq queuelist in\nflush state machine\") also has another requirement that no drivers would\ntouch rq->queuelist after blk_mq_end_request() since we will reuse it to\nadd rq to the post-flush pending list in POSTFLUSH. If this is not true,\nwe will have to revert that commit IMHO.\n\nThis updated version adds \"list_del_init(&rq->queuelist)\" in flush rq\ncallback since the dm layer may submit request of a weird invalid format\n(REQ_FSEQ_PREFLUSH | REQ_FSEQ_POSTFLUSH), which causes double list_add\nif without this \"list_del_init(&rq->queuelist)\". The weird invalid format\nproblem should be fixed in dm layer."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-flush.c"],"versions":[{"version":"81ada09cc25e4bf2de7d2951925fb409338a545d","lessThan":"fe1e395563ccb051e9dbd8fa99859f5caaad2e71","status":"affected","versionType":"git"},{"version":"81ada09cc25e4bf2de7d2951925fb409338a545d","lessThan":"87907bd69721a8506618a954d41a1de3040e88aa","status":"affected","versionType":"git"},{"version":"81ada09cc25e4bf2de7d2951925fb409338a545d","lessThan":"d0321c812d89c5910d8da8e4b10c891c6b96ff70","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["block/blk-flush.c"],"versions":[{"version":"6.6","status":"affected"},{"version":"0","lessThan":"6.6","status":"unaffected","versionType":"semver"},{"version":"6.6.35","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.9.6","lessThanOrEqual":"6.9.*","status":"unaffected","versionType":"semver"},{"version":"6.10","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.6.35"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.9.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.10"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/fe1e395563ccb051e9dbd8fa99859f5caaad2e71"},{"url":"https://git.kernel.org/stable/c/87907bd69721a8506618a954d41a1de3040e88aa"},{"url":"https://git.kernel.org/stable/c/d0321c812d89c5910d8da8e4b10c891c6b96ff70"}],"title":"block: fix request.queuelist usage in flush","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T04:39:56.086Z"},"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/fe1e395563ccb051e9dbd8fa99859f5caaad2e71","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/87907bd69721a8506618a954d41a1de3040e88aa","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/d0321c812d89c5910d8da8e4b10c891c6b96ff70","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-40925","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T17:05:17.851843Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-11T17:33:03.370Z"}}]}}