{"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"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["arch/s390/kernel/perf_pai.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "cf348ec613f75b9774291e47b804fd7010835a6c", "status": "affected", "version": "9f66572f2889a5e72a9d7e17787e52f03b1f7bd8", "versionType": "git"}, {"lessThan": "f3110e969ad226ffbb2d9b4bf5387e68d0d9ef40", "status": "affected", "version": "9f66572f2889a5e72a9d7e17787e52f03b1f7bd8", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["arch/s390/kernel/perf_pai.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.11"}, {"lessThan": "6.11", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "7.2.*", "status": "unaffected", "version": "7.2.13", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "7.3", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "cveTags": [], "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()."}], "id": "CVE-2026-99125", "lastModified": "2026-10-28T11:17:32.210", "metrics": {}, "published": "2026-10-28T11:17:32.210", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/cf348ec613f75b9774291e47b804fd7010835a6c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f3110e969ad226ffbb2d9b4bf5387e68d0d9ef40"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Received"}

{}