{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64425","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-07-19T15:36:31.787Z","datePublished":"2026-07-25T08:51:03.036Z","dateUpdated":"2026-08-17T04:55:25.440Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-17T04:55:25.440Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/io-wq: re-check IO_WQ_BIT_EXIT for each linked work item\n\ncommit 10dc95939817 (\"io_uring/io-wq: check IO_WQ_BIT_EXIT inside work\nrun loop\") fixed the obvious case where io_worker_handle_work() took one\nexit-bit snapshot before draining pending work, but the fix stops one\nlevel too early.\n\nio_worker_handle_work() now re-checks IO_WQ_BIT_EXIT in its outer work\nrun loop, yet it still snapshots that bit once before processing a whole\ndependent linked-work chain. If io_wq_exit_start() sets IO_WQ_BIT_EXIT\nafter the first linked item has started, the remaining linked items can\nstill reuse stale do_kill = false, skip IO_WQ_WORK_CANCEL, and continue\nrunning after exit has begun.\n\nMove the check further inside, so it covers linked items too. Note: this\nis a syzbot special as it loves setting up tons of slow linked work on\nweird devices like msr that take forever to read, and immediately close\nthe ring. Exit then takes a long time."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["io_uring/io-wq.c"],"versions":[{"version":"065dd936195a3466b8ebe5f9287400987ee3c063","lessThan":"14b7ecad2ec56699325180a744f4b19f046401bb","status":"affected","versionType":"git"},{"version":"27e47500fac23d15b7dc93ff650bc4844d2581bd","lessThan":"d179533c610e1b4c6aa436e3c1fd1b719d2c727c","status":"affected","versionType":"git"},{"version":"d05d99573f81a091547b1778b9a50120f5d6c68a","lessThan":"6e2f51f3e06773c2ee98ad09738f0908b48f76f9","status":"affected","versionType":"git"},{"version":"85eb83694a91c89d9abe615d717c0053c3efa714","lessThan":"ea61b04e1d7242cb37f5ed2cc91cf21a493f6597","status":"affected","versionType":"git"},{"version":"2e8ca1078b14142db2ce51cbd18ff9971560046b","lessThan":"b6f179a653a934736c88d820fe0098c3c2532549","status":"affected","versionType":"git"},{"version":"bdf0bf73006ea8af9327cdb85cfdff4c23a5f966","lessThan":"1636d85dc139b07c0449308f2bb5e0c7a2e0da99","status":"affected","versionType":"git"},{"version":"10dc959398175736e495f71c771f8641e1ca1907","lessThan":"ab85765cbe3258b43dc6729af0e6ce3a87a133d8","status":"affected","versionType":"git"},{"version":"10dc959398175736e495f71c771f8641e1ca1907","lessThan":"29bef9934b2521f787bb15dd1985d4c0d12ae02a","status":"affected","versionType":"git"},{"version":"5.10.253","lessThan":"5.10.261","status":"affected","versionType":"semver"},{"version":"5.15.203","lessThan":"5.15.212","status":"affected","versionType":"semver"},{"version":"6.1.167","lessThan":"6.1.178","status":"affected","versionType":"semver"},{"version":"6.6.122","lessThan":"6.6.145","status":"affected","versionType":"semver"},{"version":"6.12.68","lessThan":"6.12.96","status":"affected","versionType":"semver"},{"version":"6.18.8","lessThan":"6.18.39","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["io_uring/io-wq.c"],"versions":[{"version":"6.19","status":"affected"},{"version":"0","lessThan":"6.19","status":"unaffected","versionType":"semver"},{"version":"5.10.261","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.212","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.178","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.145","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.96","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.39","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.4","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","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":"5.10.253","versionEndExcluding":"5.10.261"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.203","versionEndExcluding":"5.15.212"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.167","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.122","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12.68","versionEndExcluding":"6.12.96"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.18.8","versionEndExcluding":"6.18.39"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.1.4"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.19","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/14b7ecad2ec56699325180a744f4b19f046401bb"},{"url":"https://git.kernel.org/stable/c/d179533c610e1b4c6aa436e3c1fd1b719d2c727c"},{"url":"https://git.kernel.org/stable/c/6e2f51f3e06773c2ee98ad09738f0908b48f76f9"},{"url":"https://git.kernel.org/stable/c/ea61b04e1d7242cb37f5ed2cc91cf21a493f6597"},{"url":"https://git.kernel.org/stable/c/b6f179a653a934736c88d820fe0098c3c2532549"},{"url":"https://git.kernel.org/stable/c/1636d85dc139b07c0449308f2bb5e0c7a2e0da99"},{"url":"https://git.kernel.org/stable/c/ab85765cbe3258b43dc6729af0e6ce3a87a133d8"},{"url":"https://git.kernel.org/stable/c/29bef9934b2521f787bb15dd1985d4c0d12ae02a"}],"title":"io_uring/io-wq: re-check IO_WQ_BIT_EXIT for each linked work item","x_generator":{"engine":"bippy-1.2.0"}}}}