CVE-2024-56665 (GCVE-0-2024-56665)

Vulnerability from cvelistv5 – Published: 2024-12-27 15:06 – Updated: 2026-05-23 15:55
VLAI
Title
bpf,perf: Fix invalid prog_array access in perf_event_detach_bpf_prog
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
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-01 19:59 UTC
CWE
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6651 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7a5c653ede645693422e43cccaa3e8f905d21c74 , < 842e5af282453983586e2eae3c8eaf252de5f22f (git)
Affected: 21db2f35fa97e4a3447f2edeb7b2569a8bfdc83b , < c2b6b47662d5f2dfce92e5ffbdcac8229f321d9d (git)
Affected: 0ee288e69d033850bc87abe0f9cc3ada24763d7f , < dfb15ddf3b65e0df2129f9756d1b4fa78055cdb3 (git)
Affected: 0ee288e69d033850bc87abe0f9cc3ada24763d7f , < 978c4486cca5c7b9253d3ab98a88c8e769cb9bbd (git)
Affected: b4007d5fe38625b8a1b8edc0f385d86527651238 (git)
Affected: 585674b9d0d80bd7f428b1f88be13cf6d5d6f739 (git)
Affected: 6.1.115 , < 6.1.121 (semver)
Affected: 6.6.59 , < 6.6.67 (semver)
Affected: 5.15.170 , < 5.16 (semver)
Affected: 6.11.6 , < 6.12 (semver)
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Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.1.121 , ≤ 6.1.* (semver)
Unaffected: 6.6.67 , ≤ 6.6.* (semver)
Unaffected: 6.12.6 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf,perf: Se corrige el acceso no v\u00e1lido a prog_array en perf_event_detach_bpf_prog Syzbot inform\u00f3 [1] un fallo que ocurre en el siguiente escenario de seguimiento: - crear un evento perf de tracepoint con attr.inherit=1, adjuntarlo al proceso y establecerle el programa bpf - el proceso adjunto se bifurca -\u0026gt; chid crea un evento heredado el nuevo evento secundario comparte el programa bpf del padre y tp_event (de ah\u00ed prog_array) que es global para tracepoint - salir tanto del proceso como de su hijo -\u0026gt; liberar ambos eventos - la primera llamada perf_event_detach_bpf_prog liberar\u00e1 tp_event-\u0026gt;prog_array y la segunda perf_event_detach_bpf_prog se bloquear\u00e1, porque tp_event-\u0026gt;prog_array es NULL La correcci\u00f3n asegura que las comprobaciones perf_event_detach_bpf_prog prog_array es v\u00e1lido antes de intentar eliminar el programa bpf de \u00e9l. [1] https://lore.kernel.org/bpf/Z1MR6dCIKajNS6nU@krava/T/#m91dbf0688221ec7a7fc95e896a7ef9ff93b0b8ad"
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      "product_status:known_affected": "28",
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      "source": "Red Hat CSAF VEX",
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      "title": "kernel: bpf,perf: Fix invalid prog_array access in perf_event_detach_bpf_prog",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-56665.json",
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                    "description": "CWE-noinfo Not enough information",
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              "dateUpdated": "2025-10-01T15:45:31.524Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
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              "product": "Linux",
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              "value": "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\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"
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        "assignerShortName": "Linux",
        "cveId": "CVE-2024-56665",
        "datePublished": "2024-12-27T15:06:27.205Z",
        "dateReserved": "2024-12-27T15:00:39.844Z",
        "dateUpdated": "2025-10-01T20:07:09.798Z",
        "state": "PUBLISHED"
      },
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  }
}



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