{"schema":"threatline.record/2","record":{"id":"CVE-2026-97961","aliases":[],"summary":"perf/core: Allow list_del during perf_event_overflow()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf/core: Allow list_del during perf_event_overflow()\n\nA PMU might use perf_sched_cb_inc() and perf_sched_cb_dec()\ninterface to get the PMU call back function pmu::sched_task\ninvoked at schedule in and schedule out. This is achieved\nby walking along the list anchored by sched_cb_list.\n\nThe following scenario might lead to a list corruption.\n\n   perf_pmu_sched_task()\n      for_each_list_entry(..., &sched_cb_list)\n      +--> __perf_pmu_sched_task()\n           +--> event->pmu->sched_task())\n                +--> PMU_push_sample()\n                     +--> perf_event_overflow()\n                          +--> __perf_event_overflow()\n                               +--> pmu->stop()\n                                    +--> perf_sched_cb_dec()\n                                         remove entry from sched_cb_list\n                                         while list node in use.\n\nThis happens when ioctl(fd, PERF_EVENT_IOC_REFRESH, xxx) has been\ninvoked and perf_event::event_limit hits zero.\n\nPrevent the list corruption and convert for_each_list_entry()\nto for_each_list_entry_safe().","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97961","source_modified_at":"2026-10-21T12:53:52.027Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"bd27568117664b8b3e259721393df420ed51f57b","lessThan":"fa360a018369f3eb4fe4f4792238adfc1f6fd5dc","status":"affected","versionType":"git"},{"version":"bd27568117664b8b3e259721393df420ed51f57b","lessThan":"723e85fb2c3bcd237ac02cbd69502ed62ce0068c","status":"affected","versionType":"git"},{"version":"bd27568117664b8b3e259721393df420ed51f57b","lessThan":"6d0b9ce3be221c9077653f3670d60d66bb725ee2","status":"affected","versionType":"git"},{"version":"bd27568117664b8b3e259721393df420ed51f57b","lessThan":"e2770c76a02452fddb52e9e05c7ed6acfef06c32","status":"affected","versionType":"git"},{"version":"bd27568117664b8b3e259721393df420ed51f57b","lessThan":"59e63416f5153e7d58652c616fbdcb7d5e01fff7","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97961","source_modified_at":"2026-10-21T12:53:52.027Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"6.2","status":"affected"},{"version":"0","lessThan":"6.2","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.111","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.53","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.7","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97961","source_modified_at":"2026-10-21T12:53:52.027Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"723e85fb2c3bcd237ac02cbd69502ed62ce0068c","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97961","source_modified_at":"2026-10-21T12:53:52.027Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6d0b9ce3be221c9077653f3670d60d66bb725ee2","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-97961","source_modified_at":"2026-10-21T12:53:52.027Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"59e63416f5153e7d58652c616fbdcb7d5e01fff7","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00168,"percentile":0.05744,"score_date":"2026-10-23"},"published_at":"2026-09-25T10:23:05.547Z","modified_at":"2026-10-21T12:53:52.027Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-97961","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-21T12:53:52.027Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-97961","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/fa360a018369f3eb4fe4f4792238adfc1f6fd5dc"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/723e85fb2c3bcd237ac02cbd69502ed62ce0068c"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/6d0b9ce3be221c9077653f3670d60d66bb725ee2"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/e2770c76a02452fddb52e9e05c7ed6acfef06c32"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/59e63416f5153e7d58652c616fbdcb7d5e01fff7"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-21T12:53:52.027Z","content_hash":"d3e8fb64e2c91f4ce409b68afd6ab72d45eaf09b01622ba783366bb4a53fec8c"}}