{"id":"CVE-2024-56665","summary":"bpf,perf: Fix invalid prog_array access in perf_event_detach_bpf_prog","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf,perf: Fix invalid prog_array access in perf_event_detach_bpf_prog\n\nSyzbot reported [1] crash that happens for following tracing scenario:\n\n  - create tracepoint perf event with attr.inherit=1, attach it to the\n    process and set bpf program to it\n  - attached process forks -\u003e chid creates inherited event\n\n    the new child event shares the parent's bpf program and tp_event\n    (hence prog_array) which is global for tracepoint\n\n  - exit both process and its child -\u003e release both events\n  - first perf_event_detach_bpf_prog call will release tp_event-\u003eprog_array\n    and second perf_event_detach_bpf_prog will crash, because\n    tp_event-\u003eprog_array is NULL\n\nThe fix makes sure the perf_event_detach_bpf_prog checks prog_array\nis valid before it tries to remove the bpf program from it.\n\n[1] https://lore.kernel.org/bpf/Z1MR6dCIKajNS6nU@krava/T/#m91dbf0688221ec7a7fc95e896a7ef9ff93b0b8ad","modified":"2026-04-16T04:34:20.070214979Z","published":"2024-12-27T15:06:27.205Z","related":["SUSE-SU-2025:0428-1","SUSE-SU-2025:0499-1","SUSE-SU-2025:0557-1","SUSE-SU-2025:0564-1","SUSE-SU-2025:20165-1","SUSE-SU-2025:20166-1","SUSE-SU-2025:20248-1","SUSE-SU-2025:20249-1","USN-7379-2","USN-7380-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56665.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/842e5af282453983586e2eae3c8eaf252de5f22f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/978c4486cca5c7b9253d3ab98a88c8e769cb9bbd"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c2b6b47662d5f2dfce92e5ffbdcac8229f321d9d"},{"type":"WEB","url":"https://git.kernel.org/stable/c/dfb15ddf3b65e0df2129f9756d1b4fa78055cdb3"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56665.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56665"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"7a5c653ede645693422e43cccaa3e8f905d21c74"},{"fixed":"842e5af282453983586e2eae3c8eaf252de5f22f"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"21db2f35fa97e4a3447f2edeb7b2569a8bfdc83b"},{"fixed":"c2b6b47662d5f2dfce92e5ffbdcac8229f321d9d"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0ee288e69d033850bc87abe0f9cc3ada24763d7f"},{"fixed":"dfb15ddf3b65e0df2129f9756d1b4fa78055cdb3"},{"fixed":"978c4486cca5c7b9253d3ab98a88c8e769cb9bbd"}]},{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"0"},{"last_affected":"b4007d5fe38625b8a1b8edc0f385d86527651238"},{"last_affected":"585674b9d0d80bd7f428b1f88be13cf6d5d6f739"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-56665.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}