{"api_version":"1","generated_at":"2026-05-13T07:40:23+00:00","cve":"CVE-2026-43115","urls":{"html":"https://cve.report/CVE-2026-43115","api":"https://cve.report/api/cve/CVE-2026-43115.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-43115","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-43115"},"summary":{"title":"srcu: Use irq_work to start GP in tiny SRCU","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsrcu: Use irq_work to start GP in tiny SRCU\n\nTiny SRCU's srcu_gp_start_if_needed() directly calls schedule_work(),\nwhich acquires the workqueue pool->lock.\n\nThis causes a lockdep splat when call_srcu() is called with a scheduler\nlock held, due to:\n\n  call_srcu() [holding pi_lock]\n    srcu_gp_start_if_needed()\n      schedule_work() -> pool->lock\n\n  workqueue_init() / create_worker() [holding pool->lock]\n    wake_up_process() -> try_to_wake_up() -> pi_lock\n\nAlso add irq_work_sync() to cleanup_srcu_struct() to prevent a\nuse-after-free if a queued irq_work fires after cleanup begins.\n\nTested with rcutorture SRCU-T and no lockdep warnings.\n\n[ Thanks to Boqun for similar fix in patch \"rcu: Use an intermediate irq_work\nto start process_srcu()\" ]","state":"PUBLISHED","assigner":"Linux","published_at":"2026-05-06 10:16:25","updated_at":"2026-05-08 17:51:44"},"problem_types":["NVD-CWE-noinfo"],"metrics":[{"version":"3.1","source":"nvd@nist.gov","type":"Primary","score":"5.5","severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"}}],"references":[{"url":"https://git.kernel.org/stable/c/bb37286db65368cb72ba8757ad86299c4e4a73fc","name":"https://git.kernel.org/stable/c/bb37286db65368cb72ba8757ad86299c4e4a73fc","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a6fc88b22bc8d12ad52e8412c667ec0f5bf055af","name":"https://git.kernel.org/stable/c/a6fc88b22bc8d12ad52e8412c667ec0f5bf055af","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":["Patch"],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-43115","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43115","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d8be81735aa89413b333de488251f0e64e2be591 bb37286db65368cb72ba8757ad86299c4e4a73fc git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected d8be81735aa89413b333de488251f0e64e2be591 a6fc88b22bc8d12ad52e8412c667ec0f5bf055af git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.12","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.12 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.19.14 6.19.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2026","cve_id":"43115","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2026","cve_id":"43115","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"7.0","cpe7":"rc1","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2026","cve_id":"43115","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"7.0","cpe7":"rc2","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2026","cve_id":"43115","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"7.0","cpe7":"rc3","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2026","cve_id":"43115","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"7.0","cpe7":"rc4","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2026","cve_id":"43115","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"7.0","cpe7":"rc5","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"43115","cve":"CVE-2026-43115","epss":"0.000140000","percentile":"0.029270000","score_date":"2026-05-12","updated_at":"2026-05-13 00:11:54"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["include/linux/srcutiny.h","kernel/rcu/srcutiny.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"bb37286db65368cb72ba8757ad86299c4e4a73fc","status":"affected","version":"d8be81735aa89413b333de488251f0e64e2be591","versionType":"git"},{"lessThan":"a6fc88b22bc8d12ad52e8412c667ec0f5bf055af","status":"affected","version":"d8be81735aa89413b333de488251f0e64e2be591","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["include/linux/srcutiny.h","kernel/rcu/srcutiny.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.12"},{"lessThan":"4.12","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.19.*","status":"unaffected","version":"6.19.14","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.0","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.19.14","versionStartIncluding":"4.12","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0","versionStartIncluding":"4.12","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsrcu: Use irq_work to start GP in tiny SRCU\n\nTiny SRCU's srcu_gp_start_if_needed() directly calls schedule_work(),\nwhich acquires the workqueue pool->lock.\n\nThis causes a lockdep splat when call_srcu() is called with a scheduler\nlock held, due to:\n\n  call_srcu() [holding pi_lock]\n    srcu_gp_start_if_needed()\n      schedule_work() -> pool->lock\n\n  workqueue_init() / create_worker() [holding pool->lock]\n    wake_up_process() -> try_to_wake_up() -> pi_lock\n\nAlso add irq_work_sync() to cleanup_srcu_struct() to prevent a\nuse-after-free if a queued irq_work fires after cleanup begins.\n\nTested with rcutorture SRCU-T and no lockdep warnings.\n\n[ Thanks to Boqun for similar fix in patch \"rcu: Use an intermediate irq_work\nto start process_srcu()\" ]"}],"providerMetadata":{"dateUpdated":"2026-05-07T17:14:09.834Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/bb37286db65368cb72ba8757ad86299c4e4a73fc"},{"url":"https://git.kernel.org/stable/c/a6fc88b22bc8d12ad52e8412c667ec0f5bf055af"}],"title":"srcu: Use irq_work to start GP in tiny SRCU","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-43115","datePublished":"2026-05-06T07:40:40.541Z","dateReserved":"2026-05-01T14:12:55.986Z","dateUpdated":"2026-05-07T17:14:09.834Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-05-06 10:16:25","lastModifiedDate":"2026-05-08 17:51:44","problem_types":["NVD-CWE-noinfo"],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":5.5,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":1.8,"impactScore":3.6}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.12","versionEndExcluding":"6.19.14","matchCriteriaId":"2D2EA261-943C-485F-BC27-BE526335CA60"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*","matchCriteriaId":"F253B622-8837-4245-BCE5-A7BF8FC76A16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*","matchCriteriaId":"4AE85AD8-4641-4E7C-A2F4-305E2CD9EE64"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*","matchCriteriaId":"F666C8D8-6538-46D4-B318-87610DE64C34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*","matchCriteriaId":"02259FDA-961B-47BC-AE7F-93D7EC6E90C2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*","matchCriteriaId":"58A9FEFF-C040-420D-8F0A-BFDAAA1DF258"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"43115","Ordinal":"1","Title":"srcu: Use irq_work to start GP in tiny SRCU","CVE":"CVE-2026-43115","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"43115","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nsrcu: Use irq_work to start GP in tiny SRCU\n\nTiny SRCU's srcu_gp_start_if_needed() directly calls schedule_work(),\nwhich acquires the workqueue pool->lock.\n\nThis causes a lockdep splat when call_srcu() is called with a scheduler\nlock held, due to:\n\n  call_srcu() [holding pi_lock]\n    srcu_gp_start_if_needed()\n      schedule_work() -> pool->lock\n\n  workqueue_init() / create_worker() [holding pool->lock]\n    wake_up_process() -> try_to_wake_up() -> pi_lock\n\nAlso add irq_work_sync() to cleanup_srcu_struct() to prevent a\nuse-after-free if a queued irq_work fires after cleanup begins.\n\nTested with rcutorture SRCU-T and no lockdep warnings.\n\n[ Thanks to Boqun for similar fix in patch \"rcu: Use an intermediate irq_work\nto start process_srcu()\" ]","Type":"Description","Title":"srcu: Use irq_work to start GP in tiny SRCU"}]}}}