{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-99125","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.393Z","datePublished":"2026-10-28T10:34:40.025Z","dateUpdated":"2026-10-28T10:34:40.025Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-28T10:34:40.025Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/pai: Handle multiple PMU stop callback invocations\n\nHandle the following scenario:\nThe kernel protects itself against a very high sampling load and\nthrottles the sampling using:\n\n  perf_event_throttle() --> PMU->stop()\n\nShortly later the scheduler may terminate the task and removes it from the\nCPU. It again calls\n\n  PMU->stop()\n\nwhich results in two invocations of PMU->stop() called back to back.\nProtect against this and check the PERF_HES_STOPPED bit on function\nentry.  If it is already set return.\nClear bit PERF_HES_STOPPED in PMU->start().\n\nProhibit ioctl(fd, PERF_EVENT_IOC_PERIOD, ...) call for this event.\nIt sets perf_event::event_limit to a positive value and causes\nperf_event_overflow() to invoke pai_stop() call back function when\nperf_event::event_limit hits zero. This is not supported because the\nsample events CRYPTO_ALL and NNPA_ALL are only taken at schedule out\nof a task.\n\nUse list_for_each_entry_safe() for safe iteration over syswide_list\nin pai_have_samples()."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/s390/kernel/perf_pai.c"],"versions":[{"version":"9f66572f2889a5e72a9d7e17787e52f03b1f7bd8","lessThan":"cf348ec613f75b9774291e47b804fd7010835a6c","status":"affected","versionType":"git"},{"version":"9f66572f2889a5e72a9d7e17787e52f03b1f7bd8","lessThan":"f3110e969ad226ffbb2d9b4bf5387e68d0d9ef40","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["arch/s390/kernel/perf_pai.c"],"versions":[{"version":"6.11","status":"affected"},{"version":"0","lessThan":"6.11","status":"unaffected","versionType":"semver"},{"version":"7.2.13","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"7.2.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"7.3"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/cf348ec613f75b9774291e47b804fd7010835a6c"},{"url":"https://git.kernel.org/stable/c/f3110e969ad226ffbb2d9b4bf5387e68d0d9ef40"}],"title":"s390/pai: Handle multiple PMU stop callback invocations","x_generator":{"engine":"bippy-1.2.0"}}}}