CVE-2024-56665 (GCVE-0-2024-56665)
Vulnerability from cvelistv5
Published
2024-12-27 15:06
Modified
2025-10-01 20:07
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf,perf: Fix invalid prog_array access in perf_event_detach_bpf_prog Syzbot reported [1] crash that happens for following tracing scenario: - create tracepoint perf event with attr.inherit=1, attach it to the process and set bpf program to it - attached process forks -> chid creates inherited event the new child event shares the parent's bpf program and tp_event (hence prog_array) which is global for tracepoint - exit both process and its child -> release both events - first perf_event_detach_bpf_prog call will release tp_event->prog_array and second perf_event_detach_bpf_prog will crash, because tp_event->prog_array is NULL The fix makes sure the perf_event_detach_bpf_prog checks prog_array is valid before it tries to remove the bpf program from it. [1] https://lore.kernel.org/bpf/Z1MR6dCIKajNS6nU@krava/T/#m91dbf0688221ec7a7fc95e896a7ef9ff93b0b8ad
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/842e5af282453983586e2eae3c8eaf252de5f22fPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/978c4486cca5c7b9253d3ab98a88c8e769cb9bbdPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c2b6b47662d5f2dfce92e5ffbdcac8229f321d9dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dfb15ddf3b65e0df2129f9756d1b4fa78055cdb3Patch
Impacted products
Vendor Product Version
Linux Linux Version: 7a5c653ede645693422e43cccaa3e8f905d21c74
Version: 21db2f35fa97e4a3447f2edeb7b2569a8bfdc83b
Version: 0ee288e69d033850bc87abe0f9cc3ada24763d7f
Version: 0ee288e69d033850bc87abe0f9cc3ada24763d7f
Version: b4007d5fe38625b8a1b8edc0f385d86527651238
Version: 585674b9d0d80bd7f428b1f88be13cf6d5d6f739
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   Linux Linux Version: 6.12
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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\u0027s 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\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.121\", \"versionStartIncluding\": \"6.1.115\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.67\", \"versionStartIncluding\": \"6.6.59\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.6\", \"versionStartIncluding\": \"6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13\", \"versionStartIncluding\": \"6.12\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"5.15.170\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionStartIncluding\": \"6.11.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-05-04T13:01:12.270Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-56665\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-01T20:07:09.798Z\", \"dateReserved\": \"2024-12-27T15:00:39.844Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-12-27T15:06:27.205Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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