CVE-2026-64425

{"id": "CVE-2026-64425", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "affectedData": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "065dd936195a3466b8ebe5f9287400987ee3c063", "lessThan": "14b7ecad2ec56699325180a744f4b19f046401bb", "versionType": "git"}, {"status": "affected", "version": "27e47500fac23d15b7dc93ff650bc4844d2581bd", "lessThan": "d179533c610e1b4c6aa436e3c1fd1b719d2c727c", "versionType": "git"}, {"status": "affected", "version": "d05d99573f81a091547b1778b9a50120f5d6c68a", "lessThan": "6e2f51f3e06773c2ee98ad09738f0908b48f76f9", "versionType": "git"}, {"status": "affected", "version": "85eb83694a91c89d9abe615d717c0053c3efa714", "lessThan": "ea61b04e1d7242cb37f5ed2cc91cf21a493f6597", "versionType": "git"}, {"status": "affected", "version": "2e8ca1078b14142db2ce51cbd18ff9971560046b", "lessThan": "b6f179a653a934736c88d820fe0098c3c2532549", "versionType": "git"}, {"status": "affected", "version": "bdf0bf73006ea8af9327cdb85cfdff4c23a5f966", "lessThan": "1636d85dc139b07c0449308f2bb5e0c7a2e0da99", "versionType": "git"}, {"status": "affected", "version": "10dc959398175736e495f71c771f8641e1ca1907", "lessThan": "ab85765cbe3258b43dc6729af0e6ce3a87a133d8", "versionType": "git"}, {"status": "affected", "version": "10dc959398175736e495f71c771f8641e1ca1907", "lessThan": "29bef9934b2521f787bb15dd1985d4c0d12ae02a", "versionType": "git"}, {"status": "affected", "version": "5.10.253", "lessThan": "5.10.261", "versionType": "semver"}, {"status": "affected", "version": "5.15.203", "lessThan": "5.15.212", "versionType": "semver"}, {"status": "affected", "version": "6.1.167", "lessThan": "6.1.178", "versionType": "semver"}, {"status": "affected", "version": "6.6.122", "lessThan": "6.6.145", "versionType": "semver"}, {"status": "affected", "version": "6.12.68", "lessThan": "6.12.96", "versionType": "semver"}, {"status": "affected", "version": "6.18.8", "lessThan": "6.18.39", "versionType": "semver"}], "programFiles": ["io_uring/io-wq.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.19"}, {"status": "unaffected", "version": "0", "lessThan": "6.19", "versionType": "semver"}, {"status": "unaffected", "version": "5.10.261", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.15.212", "versionType": "semver", "lessThanOrEqual": "5.15.*"}, {"status": "unaffected", "version": "6.1.178", "versionType": "semver", "lessThanOrEqual": "6.1.*"}, {"status": "unaffected", "version": "6.6.145", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.12.96", "versionType": "semver", "lessThanOrEqual": "6.12.*"}, {"status": "unaffected", "version": "6.18.39", "versionType": "semver", "lessThanOrEqual": "6.18.*"}, {"status": "unaffected", "version": "7.1.4", "versionType": "semver", "lessThanOrEqual": "7.1.*"}, {"status": "unaffected", "version": "7.2", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["io_uring/io-wq.c"], "defaultStatus": "affected"}]}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "affectedData": [{"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.6", "lessThan": "*", "versionType": "custom"}], "defaultStatus": "unknown"}]}], "published": "2026-07-25T10:17:26.600", "references": [{"url": "https://git.kernel.org/stable/c/14b7ecad2ec56699325180a744f4b19f046401bb", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/1636d85dc139b07c0449308f2bb5e0c7a2e0da99", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/29bef9934b2521f787bb15dd1985d4c0d12ae02a", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/6e2f51f3e06773c2ee98ad09738f0908b48f76f9", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ab85765cbe3258b43dc6729af0e6ce3a87a133d8", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/b6f179a653a934736c88d820fe0098c3c2532549", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/d179533c610e1b4c6aa436e3c1fd1b719d2c727c", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/ea61b04e1d7242cb37f5ed2cc91cf21a493f6597", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://cert-portal.siemens.com/productcert/html/ssa-019113.html", "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}], "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."}], "lastModified": "2026-09-08T09:18:19.647", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "447881EC-610E-41CE-8353-9048B65EB4AE", "versionEndExcluding": "5.10.261", "versionStartIncluding": "5.10.253"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "D52346A9-4659-4FB5-B1D5-09997197EB63", "versionEndExcluding": "5.15.212", "versionStartIncluding": "5.15.203"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E48EFC8B-DCF1-405C-8DE4-E5B5F767C21C", "versionEndExcluding": "6.1.178", "versionStartIncluding": "6.1.167"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1608327A-78B7-4795-BCB8-2AEEB72ED678", "versionEndExcluding": "6.6.145", "versionStartIncluding": "6.6.122"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "71C07FF1-DE3C-420C-8055-92D1AED33011", "versionEndExcluding": "6.12.96", "versionStartIncluding": "6.12.68"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9C764C45-0021-4E14-BD2F-9FD21F15DDA4", "versionEndExcluding": "6.18.39", "versionStartIncluding": "6.18.8"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4B774035-FC57-4751-A7A8-85CC650BFFC4", "versionEndExcluding": "7.1.4", "versionStartIncluding": "6.19.1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "35C8A871-4971-433E-A046-FC9F7B7D190A"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc7:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F5DC0CA6-F0AF-4DDF-A882-3DADB9A886A7"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc8:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "EB5B7DFC-C36B-45D8-922C-877569FDDF43"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}