{"id":"CVE-2026-98790","state":"PUBLISHED","title":"perf: Fix race between perf_event_exit_task() and perf_pending_task()","description":"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->ctx->task != current).\n\nSince both task exit and exec paths can call perf_event_exit_task() which\nsets ctx->task to TASK_TOMBSTONE, fix this by explicitly checking if\nevent->ctx->task equals TASK_TOMBSTONE and dropping the redundant\nPF_EXITING check.","publishedAt":"2026-10-18T15:48:27.412Z","updatedAt":"2026-10-30T12:39:50.548Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"97ba62b278674293762c3d91f724f1bb922f04e0","status":"affected","lessThan":"6e454fbe3e646d119ab75e907035950e0e857c09","versionType":"git"},{"version":"97ba62b278674293762c3d91f724f1bb922f04e0","status":"affected","lessThan":"a8a6fe5601fa2d2c0fbfb3e531a1063f73c1eae3","versionType":"git"},{"version":"97ba62b278674293762c3d91f724f1bb922f04e0","status":"affected","lessThan":"655acfa713bce9ae9c81a654459890c2f58cb4e8","versionType":"git"},{"version":"97ba62b278674293762c3d91f724f1bb922f04e0","status":"affected","lessThan":"672b8a9ce8f51b991481dfde26fba5cc4340a91a","versionType":"git"},{"version":"97ba62b278674293762c3d91f724f1bb922f04e0","status":"affected","lessThan":"524063fea29f8a841e49927ea7a8085194ad3ec2","versionType":"git"},{"version":"97ba62b278674293762c3d91f724f1bb922f04e0","status":"affected","lessThan":"81e61e3f8befa1bae3ec8e779d8ada5e5e362c21","versionType":"git"},{"version":"97ba62b278674293762c3d91f724f1bb922f04e0","status":"affected","lessThan":"ffb684f2aa141eeb0caa6308422e7e05d1ded7c4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/events/core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/events/core.c"]}],"references":["https://git.kernel.org/stable/c/6e454fbe3e646d119ab75e907035950e0e857c09","https://git.kernel.org/stable/c/a8a6fe5601fa2d2c0fbfb3e531a1063f73c1eae3","https://git.kernel.org/stable/c/655acfa713bce9ae9c81a654459890c2f58cb4e8","https://git.kernel.org/stable/c/672b8a9ce8f51b991481dfde26fba5cc4340a91a","https://git.kernel.org/stable/c/524063fea29f8a841e49927ea7a8085194ad3ec2","https://git.kernel.org/stable/c/81e61e3f8befa1bae3ec8e779d8ada5e5e362c21","https://git.kernel.org/stable/c/ffb684f2aa141eeb0caa6308422e7e05d1ded7c4"],"weaknesses":[],"ingestedAt":"2026-10-30T13:00:06.648Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/98xxx/CVE-2026-98790.json","commit":"cb14bf1b43b0c9f05f7f40eae2246263fd430780","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98790","state":"PUBLISHED","datePublished":"2026-10-18T15:48:27.412Z","dateUpdated":"2026-10-30T12:39:50.548Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-09-25T10:25:14.370Z"},"containers":{"cna":{"title":"perf: Fix race between perf_event_exit_task() and perf_pending_task()","descriptions":[{"lang":"en","value":"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->ctx->task != current).\n\nSince both task exit and exec paths can call perf_event_exit_task() which\nsets ctx->task to TASK_TOMBSTONE, fix this by explicitly checking if\nevent->ctx->task equals TASK_TOMBSTONE and dropping the redundant\nPF_EXITING check."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"97ba62b278674293762c3d91f724f1bb922f04e0","status":"affected","lessThan":"6e454fbe3e646d119ab75e907035950e0e857c09","versionType":"git"},{"version":"97ba62b278674293762c3d91f724f1bb922f04e0","status":"affected","lessThan":"a8a6fe5601fa2d2c0fbfb3e531a1063f73c1eae3","versionType":"git"},{"version":"97ba62b278674293762c3d91f724f1bb922f04e0","status":"affected","lessThan":"655acfa713bce9ae9c81a654459890c2f58cb4e8","versionType":"git"},{"version":"97ba62b278674293762c3d91f724f1bb922f04e0","status":"affected","lessThan":"672b8a9ce8f51b991481dfde26fba5cc4340a91a","versionType":"git"},{"version":"97ba62b278674293762c3d91f724f1bb922f04e0","status":"affected","lessThan":"524063fea29f8a841e49927ea7a8085194ad3ec2","versionType":"git"},{"version":"97ba62b278674293762c3d91f724f1bb922f04e0","status":"affected","lessThan":"81e61e3f8befa1bae3ec8e779d8ada5e5e362c21","versionType":"git"},{"version":"97ba62b278674293762c3d91f724f1bb922f04e0","status":"affected","lessThan":"ffb684f2aa141eeb0caa6308422e7e05d1ded7c4","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/events/core.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"5.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"5.13","versionType":"semver"},{"version":"5.15.224","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.191","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.113","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.56","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.2.10","status":"unaffected","lessThanOrEqual":"7.2.*","versionType":"semver"},{"version":"7.3","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["kernel/events/core.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/6e454fbe3e646d119ab75e907035950e0e857c09"},{"url":"https://git.kernel.org/stable/c/a8a6fe5601fa2d2c0fbfb3e531a1063f73c1eae3"},{"url":"https://git.kernel.org/stable/c/655acfa713bce9ae9c81a654459890c2f58cb4e8"},{"url":"https://git.kernel.org/stable/c/672b8a9ce8f51b991481dfde26fba5cc4340a91a"},{"url":"https://git.kernel.org/stable/c/524063fea29f8a841e49927ea7a8085194ad3ec2"},{"url":"https://git.kernel.org/stable/c/81e61e3f8befa1bae3ec8e779d8ada5e5e362c21"},{"url":"https://git.kernel.org/stable/c/ffb684f2aa141eeb0caa6308422e7e05d1ded7c4"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-30T12:39:50.548Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"6.18.56"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"7.2.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.13","versionEndExcluding":"7.3"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}