{"api_version":"1","generated_at":"2026-09-19T16:59:49+00:00","cve":"CVE-2026-93150","urls":{"html":"https://cve.report/CVE-2026-93150","api":"https://cve.report/api/cve/CVE-2026-93150.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-93150","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-93150"},"summary":{"title":"cgroup/cpuset: Make nr_deadline_tasks an atomic_t","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ncgroup/cpuset: Make nr_deadline_tasks an atomic_t\n\nThe nr_deadline_tasks variable in the cpuset structure was introduced by\ncommit 6c24849f5515 (\"sched/cpuset: Keep track of SCHED_DEADLINE task\nin cpusets\"). It is reported by sashiko [1] that nr_deadline_tasks\ncan currently be modified by inc_dl_tasks_cs() under rq->lock and\nby cpuset_attach() under cpuset_mutex. So if both updates happen\nsimultaneously, the nr_deadline_tasks variable can be corrupted leading\nto incorrect operations down the road.\n\nFix that by changing its type to atomic_t so that nr_deadline_tasks\nare always atomically updated. This fix patch is a low hanging fruit.\nIt can handle some of the races between a concurrent sched_setscheduler()\nand cpuset_can_attach()/cpuset_attach() calls, but not all of them like\nthe other issue raised by sashiko [2]. This will be handled hopefully\nin a future follow up patch.\n\n[1] https://sashiko.dev/#/patchset/20260626181923.133658-1-longman%40redhat.com\n[2] https://sashiko.dev/#/patchset/20260630033344.352702-1-longman%40redhat.com","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-17 17:18:10","updated_at":"2026-09-17 17:18:10"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/95220e1f18f6321008f021abc7d6f581f64bcb82","name":"https://git.kernel.org/stable/c/95220e1f18f6321008f021abc7d6f581f64bcb82","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/78d9daf5e13ad1448b7dfebac949936710ec7565","name":"https://git.kernel.org/stable/c/78d9daf5e13ad1448b7dfebac949936710ec7565","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e5965ae3f7c918151b87e5c925b7978afbeaf638","name":"https://git.kernel.org/stable/c/e5965ae3f7c918151b87e5c925b7978afbeaf638","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e422b32e6a57269ca8164c60674a78bee85cf5fb","name":"https://git.kernel.org/stable/c/e422b32e6a57269ca8164c60674a78bee85cf5fb","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-93150","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93150","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6c24849f5515e4966d94fa5279bdff4acf2e9489 e422b32e6a57269ca8164c60674a78bee85cf5fb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6c24849f5515e4966d94fa5279bdff4acf2e9489 e5965ae3f7c918151b87e5c925b7978afbeaf638 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6c24849f5515e4966d94fa5279bdff4acf2e9489 78d9daf5e13ad1448b7dfebac949936710ec7565 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6c24849f5515e4966d94fa5279bdff4acf2e9489 95220e1f18f6321008f021abc7d6f581f64bcb82 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5ac05ce5684315d0e71194a63febaf33921c3268 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 43d8cbfefa7c59bd3b5fe184535eca476d45304e git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d1b4262b78cc7638642833252ae92fc586854ffb git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 74fac5bb0d375d6b8f5e7997925063c509089c9c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.10.193 5.11 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 5.15.129 5.16 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.1.50 6.2 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.4.13 6.5 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.5","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.5 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.110 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.52 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.6 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"93150","cve":"CVE-2026-93150","epss":"0.002000000","percentile":"0.101490000","score_date":"2026-09-18","updated_at":"2026-09-19 00:06:17"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["kernel/cgroup/cpuset-internal.h","kernel/cgroup/cpuset.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"e422b32e6a57269ca8164c60674a78bee85cf5fb","status":"affected","version":"6c24849f5515e4966d94fa5279bdff4acf2e9489","versionType":"git"},{"lessThan":"e5965ae3f7c918151b87e5c925b7978afbeaf638","status":"affected","version":"6c24849f5515e4966d94fa5279bdff4acf2e9489","versionType":"git"},{"lessThan":"78d9daf5e13ad1448b7dfebac949936710ec7565","status":"affected","version":"6c24849f5515e4966d94fa5279bdff4acf2e9489","versionType":"git"},{"lessThan":"95220e1f18f6321008f021abc7d6f581f64bcb82","status":"affected","version":"6c24849f5515e4966d94fa5279bdff4acf2e9489","versionType":"git"},{"status":"affected","version":"5ac05ce5684315d0e71194a63febaf33921c3268","versionType":"git"},{"status":"affected","version":"43d8cbfefa7c59bd3b5fe184535eca476d45304e","versionType":"git"},{"status":"affected","version":"d1b4262b78cc7638642833252ae92fc586854ffb","versionType":"git"},{"status":"affected","version":"74fac5bb0d375d6b8f5e7997925063c509089c9c","versionType":"git"},{"lessThan":"5.11","status":"affected","version":"5.10.193","versionType":"semver"},{"lessThan":"5.16","status":"affected","version":"5.15.129","versionType":"semver"},{"lessThan":"6.2","status":"affected","version":"6.1.50","versionType":"semver"},{"lessThan":"6.5","status":"affected","version":"6.4.13","versionType":"semver"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["kernel/cgroup/cpuset-internal.h","kernel/cgroup/cpuset.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.5"},{"lessThan":"6.5","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.110","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.52","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.6","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.110","versionStartIncluding":"6.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.52","versionStartIncluding":"6.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.6","versionStartIncluding":"6.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"6.5","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.10.193","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.15.129","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.50","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4.13","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ncgroup/cpuset: Make nr_deadline_tasks an atomic_t\n\nThe nr_deadline_tasks variable in the cpuset structure was introduced by\ncommit 6c24849f5515 (\"sched/cpuset: Keep track of SCHED_DEADLINE task\nin cpusets\"). It is reported by sashiko [1] that nr_deadline_tasks\ncan currently be modified by inc_dl_tasks_cs() under rq->lock and\nby cpuset_attach() under cpuset_mutex. So if both updates happen\nsimultaneously, the nr_deadline_tasks variable can be corrupted leading\nto incorrect operations down the road.\n\nFix that by changing its type to atomic_t so that nr_deadline_tasks\nare always atomically updated. This fix patch is a low hanging fruit.\nIt can handle some of the races between a concurrent sched_setscheduler()\nand cpuset_can_attach()/cpuset_attach() calls, but not all of them like\nthe other issue raised by sashiko [2]. This will be handled hopefully\nin a future follow up patch.\n\n[1] https://sashiko.dev/#/patchset/20260626181923.133658-1-longman%40redhat.com\n[2] https://sashiko.dev/#/patchset/20260630033344.352702-1-longman%40redhat.com"}],"providerMetadata":{"dateUpdated":"2026-09-17T16:11:46.799Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/e422b32e6a57269ca8164c60674a78bee85cf5fb"},{"url":"https://git.kernel.org/stable/c/e5965ae3f7c918151b87e5c925b7978afbeaf638"},{"url":"https://git.kernel.org/stable/c/78d9daf5e13ad1448b7dfebac949936710ec7565"},{"url":"https://git.kernel.org/stable/c/95220e1f18f6321008f021abc7d6f581f64bcb82"}],"title":"cgroup/cpuset: Make nr_deadline_tasks an atomic_t","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-93150","datePublished":"2026-09-17T16:11:46.799Z","dateReserved":"2026-09-17T16:02:15.089Z","dateUpdated":"2026-09-17T16:11:46.799Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-17 17:18:10","lastModifiedDate":"2026-09-17 17:18:10","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"93150","Ordinal":"1","Title":"cgroup/cpuset: Make nr_deadline_tasks an atomic_t","CVE":"CVE-2026-93150","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"93150","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\ncgroup/cpuset: Make nr_deadline_tasks an atomic_t\n\nThe nr_deadline_tasks variable in the cpuset structure was introduced by\ncommit 6c24849f5515 (\"sched/cpuset: Keep track of SCHED_DEADLINE task\nin cpusets\"). It is reported by sashiko [1] that nr_deadline_tasks\ncan currently be modified by inc_dl_tasks_cs() under rq->lock and\nby cpuset_attach() under cpuset_mutex. So if both updates happen\nsimultaneously, the nr_deadline_tasks variable can be corrupted leading\nto incorrect operations down the road.\n\nFix that by changing its type to atomic_t so that nr_deadline_tasks\nare always atomically updated. This fix patch is a low hanging fruit.\nIt can handle some of the races between a concurrent sched_setscheduler()\nand cpuset_can_attach()/cpuset_attach() calls, but not all of them like\nthe other issue raised by sashiko [2]. This will be handled hopefully\nin a future follow up patch.\n\n[1] https://sashiko.dev/#/patchset/20260626181923.133658-1-longman%40redhat.com\n[2] https://sashiko.dev/#/patchset/20260630033344.352702-1-longman%40redhat.com","Type":"Description","Title":"cgroup/cpuset: Make nr_deadline_tasks an atomic_t"}]}}}