Vulnerability-Lookup

GHSA-2X5W-Q4PC-79QX

Vulnerability from github – Published: 2024-12-27 15:31 – Updated: 2025-11-03 21:32

Details

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

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{
  "affected": [],
  "aliases": [
    "CVE-2024-56665"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-27T15:15:26Z",
    "severity": "MODERATE"
  },
  "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\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",
  "id": "GHSA-2x5w-q4pc-79qx",
  "modified": "2025-11-03T21:32:00Z",
  "published": "2024-12-27T15:31:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-56665"
    },
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      "url": "https://git.kernel.org/stable/c/842e5af282453983586e2eae3c8eaf252de5f22f"
    },
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    },
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}

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

Vulnerability from cvelistv5 – Published: 2024-12-27 15:06 – Updated: 2026-05-23 15:55

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

CWE-noinfo Not enough information

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/842e5af2824539835…
https://git.kernel.org/stable/c/c2b6b47662d5f2dfc…
https://git.kernel.org/stable/c/dfb15ddf3b65e0df2…
https://git.kernel.org/stable/c/978c4486cca5c7b92…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
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)
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)

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JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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