{"id":"CVE-2024-57849","revision":null,"records":[{"revision":"aa55fe989b3c4bd2b27448508b926302","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-57849","aliases":[],"title":"s390/cpum_sf: Handle CPU hotplug remove during sampling","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/cpum_sf: Handle CPU hotplug remove during sampling\n\nCPU hotplug remove handling triggers the following function\ncall sequence:\n\n CPUHP_AP_PERF_S390_SF_ONLINE --> s390_pmu_sf_offline_cpu()\n ...\n CPUHP_AP_PERF_ONLINE --> perf_event_exit_cpu()\n\nThe s390 CPUMF sampling CPU hotplug handler invokes:\n\n s390_pmu_sf_offline_cpu()\n +--> cpusf_pmu_setup()\n +--> setup_pmc_cpu()\n +--> deallocate_buffers()\n\nThis function de-allocates all sampling data buffers (SDBs) allocated\nfor that CPU at event initialization. It also clears the\nPMU_F_RESERVED bit. The CPU is gone and can not be sampled.\n\nWith the event still being active on the removed CPU, the CPU event\nhotplug support in kernel performance subsystem triggers the\nfollowing function calls on the removed CPU:\n\n perf_event_exit_cpu()\n +--> perf_event_exit_cpu_context()\n +--> __perf_event_exit_context()\n\t +--> __perf_remove_from_context()\n\t +--> event_sched_out()\n\t +--> cpumsf_pmu_del()\n\t +--> cpumsf_pmu_stop()\n +--> hw_perf_event_update()\n\nto stop and remove the event. During removal of the event, the\nsampling device driver tries to read out the remaining samples from\nthe sample data buffers (SDBs). But they have already been freed\n(and may have been re-assigned). This may lead to a use after free\nsituation in which case the samples are most likely invalid. In the\nbest case the memory has not been reassigned and still contains\nvalid data.\n\nRemedy this situation and check if the CPU is still in reserved\nstate (bit PMU_F_RESERVED set). In this case the SDBs have not been\nreleased an contain valid data. This is always the case when\nthe event is removed (and no CPU hotplug off occured).\nIf the PMU_F_RESERVED bit is not set, the SDB buffers are gone.","state":0,"publishedAt":"2025-01-11T14:30:58.365+00:00","modifiedAt":"2026-10-15T21:51:49.282+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 \"arch/s390/kernel/perf_cpum_sf.c\"\n ],\n \"versions\": [\n {\n \"version\": \"e3d617fe6ac7294974fc513dc5e4d8ada8080fd1\",\n \"lessThan\": \"238e3af849dfdcb1faed544349f7025e533f9aab\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e3d617fe6ac7294974fc513dc5e4d8ada8080fd1\",\n \"lessThan\": \"99192c735ed4bfdff0d215ec85c8a87a677cb898\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e3d617fe6ac7294974fc513dc5e4d8ada8080fd1\",\n \"lessThan\": \"06a92f810df8037ca36157282ddcbefdcaf049b8\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e3d617fe6ac7294974fc513dc5e4d8ada8080fd1\",\n \"lessThan\": \"b5be6a0bb639d165c8418d8dddd8f322587be8be\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e3d617fe6ac7294974fc513dc5e4d8ada8080fd1\",\n \"lessThan\": \"a69752f1e5de817941a2ea0609254f6f25acd274\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e3d617fe6ac7294974fc513dc5e4d8ada8080fd1\",\n \"lessThan\": \"be54e6e0f93a39a9c00478d70d12956a5f3d5b9b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"e3d617fe6ac7294974fc513dc5e4d8ada8080fd1\",\n \"lessThan\": \"a0bd7dacbd51c632b8e2c0500b479af564afadf3\",\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 \"arch/s390/kernel/perf_cpum_sf.c\"\n ],\n \"versions\": [\n {\n \"version\": \"4.8\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"4.8\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.287\",\n \"lessThanOrEqual\": \"5.4.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.231\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.174\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.120\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.66\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.12.5\",\n \"lessThanOrEqual\": \"6.12.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.13\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/238e3af849dfdcb1faed544349f7025e533f9aab","https://git.kernel.org/stable/c/99192c735ed4bfdff0d215ec85c8a87a677cb898","https://git.kernel.org/stable/c/06a92f810df8037ca36157282ddcbefdcaf049b8","https://git.kernel.org/stable/c/b5be6a0bb639d165c8418d8dddd8f322587be8be","https://git.kernel.org/stable/c/a69752f1e5de817941a2ea0609254f6f25acd274","https://git.kernel.org/stable/c/be54e6e0f93a39a9c00478d70d12956a5f3d5b9b","https://git.kernel.org/stable/c/a0bd7dacbd51c632b8e2c0500b479af564afadf3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-57849","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-57849","identifiers":["CVE-2024-57849"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T13:04:36.1502744+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-09T13:04:36.1502744+00:00","lastSuccessAt":"2026-11-09T13:04:36.3089681+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:04:36.3089715+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-24e6fde7b744113daefb8f6135035fb8a5c69c9617c9c0d40574a0376532ffd3-bce548cb9713389d6cc2da20d64478978e569c118d9e3817d5449036d2c96da4","complete":true,"records":421424,"lastAttemptAt":"2026-11-09T13:02:24.4919458+00:00","lastSuccessAt":"2026-11-09T13:02:24.4462956+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:02:24.4919458+00:00","snapshotPublishedAt":"2026-11-09T12:31:22+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-897f1f8852214f7d97a85b009edb7d92","complete":false,"records":13655,"lastAttemptAt":"2026-11-09T13:16:47.5163098+00:00","lastSuccessAt":"2026-11-09T13:16:47.505+00:00","error":"7 identifier lookups failed; latest failures include HTTP 403. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-09T13:16:47.505+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13700,"expectedIdentifiers":13707,"failedIdentifiers":7},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-09T13:04:36.1502744+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-09T13:04:36.1502744+00:00","lastSuccessAt":"2026-11-09T13:04:36.3096956+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:04:36.3096959+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-fec5a400f2004099a6ceb2e015ba7713","complete":true,"records":13667,"lastAttemptAt":"2026-11-09T13:04:37.3410735+00:00","lastSuccessAt":"2026-11-09T13:04:37.338+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:04:37.338+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13707,"expectedIdentifiers":13707,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-980593e6977a6d1b4fb1eed5a1ffe88a468736f89f0a06f710924ad59132c023","complete":true,"records":9914,"lastAttemptAt":"2026-11-09T13:04:36.0102403+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:04:36.0102403+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-fde804134ecdda0ddd5ff5c26ee1fff5a6fa659311f7ef2e51c6ad54964db0e2","complete":true,"records":1971,"lastAttemptAt":"2026-11-09T13:02:24.6845928+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:02:24.6845928+00:00","snapshotPublishedAt":"2026-11-06T18:17:57+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-c905fa1bd26c7b261e77cc7202a86dc766ff31c2b096b501f3bf44f561e34970","complete":true,"records":3063,"lastAttemptAt":"2026-11-09T13:04:36.1177843+00:00","lastSuccessAt":"2026-11-09T12:02:21.7931207+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:04:36.1177843+00:00","snapshotPublishedAt":"2026-11-09T11:18:00+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-3e30324623f4d042faeccbd22ff1ab0b99d8d436d702bf285b288cefe802b265","complete":true,"records":231298,"lastAttemptAt":"2026-11-09T13:04:35.8866798+00:00","lastSuccessAt":"2026-11-09T13:04:34.5744206+00:00","error":null,"lastVerifiedAt":"2026-11-09T13:04:35.8866798+00:00","snapshotPublishedAt":"2026-11-09T12:33:12+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}