{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-53124","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-06-09T07:44:35.386Z","datePublished":"2026-06-24T16:30:53.268Z","dateUpdated":"2026-06-24T16:30:53.268Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-24T16:30:53.268Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nublk: reset per-IO canceled flag on each fetch\n\nIf a ublk server starts recovering devices but dies before issuing fetch\ncommands for all IOs, cancellation of the fetch commands that were\nsuccessfully issued may never complete. This is because the per-IO\ncanceled flag can remain set even after the fetch for that IO has been\nsubmitted - the per-IO canceled flags for all IOs in a queue are reset\ntogether only once all IOs for that queue have been fetched. So if a\nnonempty proper subset of the IOs for a queue are fetched when the ublk\nserver dies, the IOs in that subset will never successfully be canceled,\nas their canceled flags remain set, and this prevents ublk_cancel_cmd\nfrom actually calling io_uring_cmd_done on the commands, despite the\nfact that they are outstanding.\n\nFix this by resetting the per-IO cancel flags immediately when each IO\nis fetched instead of waiting for all IOs for the queue (which may never\nhappen)."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/ublk_drv.c"],"versions":[{"version":"728cbac5fe219d3b8a21a0688a08f2b7f8aeda2b","lessThan":"63335e5a67d89bb7cb9b023bbb3785896587a648","status":"affected","versionType":"git"},{"version":"728cbac5fe219d3b8a21a0688a08f2b7f8aeda2b","lessThan":"0842186d2c4e67d2f8c8c2d1d779e8acffd41b5b","status":"affected","versionType":"git"},{"version":"42ea64e01c96e594fb4f80c54dfe4f934d008a6e","status":"affected","versionType":"git"},{"version":"6.14.6","lessThan":"6.15","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/block/ublk_drv.c"],"versions":[{"version":"6.15","status":"affected"},{"version":"0","lessThan":"6.15","status":"unaffected","versionType":"semver"},{"version":"7.0.10","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","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":"6.15","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15","versionEndExcluding":"7.1"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.14.6"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/63335e5a67d89bb7cb9b023bbb3785896587a648"},{"url":"https://git.kernel.org/stable/c/0842186d2c4e67d2f8c8c2d1d779e8acffd41b5b"}],"title":"ublk: reset per-IO canceled flag on each fetch","x_generator":{"engine":"bippy-1.2.0"}}}}