{"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": "2026-07-25T08:51:03.036Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-07-25T08:51:03.036Z"}, "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-rc1", "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": 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"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"}}}}

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{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[065dd936195a3466b8ebe5f9287400987ee3c063,14b7ecad2ec56699325180a744f4b19f046401bb)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[27e47500fac23d15b7dc93ff650bc4844d2581bd,d179533c610e1b4c6aa436e3c1fd1b719d2c727c)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[d05d99573f81a091547b1778b9a50120f5d6c68a,6e2f51f3e06773c2ee98ad09738f0908b48f76f9)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[85eb83694a91c89d9abe615d717c0053c3efa714,ea61b04e1d7242cb37f5ed2cc91cf21a493f6597)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[2e8ca1078b14142db2ce51cbd18ff9971560046b,b6f179a653a934736c88d820fe0098c3c2532549)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[bdf0bf73006ea8af9327cdb85cfdff4c23a5f966,1636d85dc139b07c0449308f2bb5e0c7a2e0da99)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[10dc959398175736e495f71c771f8641e1ca1907,ab85765cbe3258b43dc6729af0e6ce3a87a133d8)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "code_commit", "value": "[10dc959398175736e495f71c771f8641e1ca1907,29bef9934b2521f787bb15dd1985d4c0d12ae02a)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.10.253,5.10.261)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.15.203,5.15.212)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.1.167,6.1.178)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.6.122,6.6.145)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.12.68,6.12.96)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[6.18.8,6.18.39)"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "6.19"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[0,6.19)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.10.261,5.11.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[5.15.212,5.16.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.1.178,6.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.6.145,6.7.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.12.96,6.13.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[6.18.39,6.19.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[7.1.4,7.2.0)"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[7.2-rc1,*]"}}], "enrichment": {"confidence": 99.0, "confidence_source": "inferred", "scores": [{"score": 99.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "Linux", "source": "cna", "vendor": "Linux"}, "product": "linux_kernel", "vendor": "linux"}], "created": "2026-07-25T17:45:05.464362+00:00", "updated": "2026-07-25T17:45:05.464440+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}