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CVE-2024-56675 (GCVE-0-2024-56675)

Vulnerability from cvelistv5 – Published: 2024-12-27 15:06 – Updated: 2026-05-11 20:57
VLAI
Title
bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors Uprobes always use bpf_prog_run_array_uprobe() under tasks-trace-RCU protection. But it is possible to attach a non-sleepable BPF program to a uprobe, and non-sleepable BPF programs are freed via normal RCU (see __bpf_prog_put_noref()). This leads to UAF of the bpf_prog because a normal RCU grace period does not imply a tasks-trace-RCU grace period. Fix it by explicitly waiting for a tasks-trace-RCU grace period after removing the attachment of a bpf_prog to a perf_event.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-10 17:12 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9 , < 9245459a992d22fe0e92e988f49db1fec82c184a (git)
Affected: 8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9 , < f9f85df30118f3f4112761e6682fc60ebcce23e5 (git)
Affected: 8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9 , < 9b53d2c2a38a1effc341d99be3f99fa7ef17047d (git)
Affected: 8c7dcb84e3b744b2b70baa7a44a9b1881c33a9c9 , < ef1b808e3b7c98612feceedf985c2fbbeb28f956 (git)
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Linux Linux Affected: 6.0
Unaffected: 0 , < 6.0 (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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Show details on NVD website
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    "redhat_vex": {
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      "current_release_date": "2026-07-24T03:33:09+00:00",
      "cve": "CVE-2024-56675",
      "id": "CVE-2024-56675",
      "initial_release_date": "2024-12-27T00:00:00+00:00",
      "product_status:fixed": "612",
      "product_status:known_affected": "50",
      "product_status:known_not_affected": "62",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: bpf: Fix UAF via mismatching bpf_prog/attachment RCU flavors",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-56675.json",
      "version": "3"
    },
    "suse_vex": {
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      "current_release_date": "2026-09-16T00:20:49Z",
      "cve": "CVE-2024-56675",
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      "initial_release_date": "2025-01-10T00:21:16Z",
      "product_status:known_affected": "410",
      "product_status:known_not_affected": "499",
      "product_status:recommended": "441",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-56675",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-56675.json",
      "version": "67"
    },
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      "cveMetadata": "{\"cveId\": \"CVE-2024-56675\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T20:52:21.551Z\", \"dateReserved\": \"2024-12-27T15:00:39.845Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-12-27T15:06:36.183Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.