{"id":"AZL-109401","summary":"CVE-2026-98790 affecting package kernel 6.6.157.1-1","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nperf: Fix race between perf_event_exit_task() and perf_pending_task()\n\nA race condition exists between perf_event_exit_task() and\nperf_pending_task() during begin_new_exec().\n\nDuring begin_new_exec(), perf_event_exit_task() may be called, and the\nPF_EXITING flag is not set on task. So perf_sigtrap() continues to execute\nand triggers WARN_ON_ONCE(event-\u003ectx-\u003etask != current).\n\nSince both task exit and exec paths can call perf_event_exit_task() which\nsets ctx-\u003etask to TASK_TOMBSTONE, fix this by explicitly checking if\nevent-\u003ectx-\u003etask equals TASK_TOMBSTONE and dropping the redundant\nPF_EXITING check.","modified":"2026-10-19T14:16:32.041733450Z","published":"2026-10-18T16:17:32Z","upstream":["CVE-2026-98790"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-98790"}],"affected":[{"package":{"name":"kernel","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/kernel"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"6.6.157.1-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-109401.json"}}],"schema_version":"1.9.0"}