{"id":"CVE-2026-97961","revision":"34f40e5a5df147079bdde2d658a2f9da","records":[{"revision":"34f40e5a5df147079bdde2d658a2f9da","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-97961","aliases":[],"title":"perf/core: Allow list_del during perf_event_overflow()","description":"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().","state":0,"publishedAt":"2026-09-25T10:23:05.547+00:00","modifiedAt":"2026-10-21T12:53:52.027+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/events/core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"bd27568117664b8b3e259721393df420ed51f57b\",\n                            \"lessThan\": \"fa360a018369f3eb4fe4f4792238adfc1f6fd5dc\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd27568117664b8b3e259721393df420ed51f57b\",\n                            \"lessThan\": \"723e85fb2c3bcd237ac02cbd69502ed62ce0068c\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd27568117664b8b3e259721393df420ed51f57b\",\n                            \"lessThan\": \"6d0b9ce3be221c9077653f3670d60d66bb725ee2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd27568117664b8b3e259721393df420ed51f57b\",\n                            \"lessThan\": \"e2770c76a02452fddb52e9e05c7ed6acfef06c32\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        },\n                        {\n                            \"version\": \"bd27568117664b8b3e259721393df420ed51f57b\",\n                            \"lessThan\": \"59e63416f5153e7d58652c616fbdcb7d5e01fff7\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Linux\",\n                    \"vendor\": \"Linux\",\n                    \"defaultStatus\": \"affected\",\n                    \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n                    \"programFiles\": [\n                        \"kernel/events/core.c\"\n                    ],\n                    \"versions\": [\n                        {\n                            \"version\": \"6.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \"0\",\n                            \"lessThan\": \"6.2\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.6.160\",\n                            \"lessThanOrEqual\": \"6.6.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.12.111\",\n                            \"lessThanOrEqual\": \"6.12.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"6.18.53\",\n                            \"lessThanOrEqual\": \"6.18.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.2.7\",\n                            \"lessThanOrEqual\": \"7.2.*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"7.3\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"original_commit_for_fix\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://git.kernel.org/stable/c/fa360a018369f3eb4fe4f4792238adfc1f6fd5dc","https://git.kernel.org/stable/c/723e85fb2c3bcd237ac02cbd69502ed62ce0068c","https://git.kernel.org/stable/c/6d0b9ce3be221c9077653f3670d60d66bb725ee2","https://git.kernel.org/stable/c/e2770c76a02452fddb52e9e05c7ed6acfef06c32","https://git.kernel.org/stable/c/59e63416f5153e7d58652c616fbdcb7d5e01fff7"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-97961","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-97961","identifiers":["CVE-2026-97961"]},"retained":false,"historicalAffected":[]}],"coverage":[]}