CVE-2024-35856 (GCVE-0-2024-35856)

Vulnerability from cvelistv5 – Published: 2024-05-17 14:47 – Updated: 2026-08-05 11:30
VLAI
Title
Bluetooth: btusb: mediatek: Fix double free of skb in coredump
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btusb: mediatek: Fix double free of skb in coredump hci_devcd_append() would free the skb on error so the caller don't have to free it again otherwise it would cause the double free of skb. Reported-by : Dan Carpenter <dan.carpenter@linaro.org>
Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-06-17 17:38 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 0b70151328781a89c89e4cf3fae21fc0e98d869e , < 80dfef128cb9f1b1ef67c0fe8c8deb4ea7ad30c1 (git)
Affected: 0b70151328781a89c89e4cf3fae21fc0e98d869e , < e20093c741d8da9f6390dd45d75b779861547035 (git)
Affected: 0b70151328781a89c89e4cf3fae21fc0e98d869e , < 18bdb386a1a30e7a3d7732a98e45e69cf6b5710d (git)
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Linux Linux Affected: 6.6
Unaffected: 0 , < 6.6 (semver)
Unaffected: 6.6.30 , ≤ 6.6.* (semver)
Unaffected: 6.8.9 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-04T18:58:24+00:00",
      "cve": "CVE-2024-35856",
      "id": "CVE-2024-35856",
      "initial_release_date": "2024-05-17T00:00:00+00:00",
      "product_status:known_affected": "42",
      "product_status:known_not_affected": "156",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Bluetooth: btusb: mediatek: Fix double free of skb in coredump",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-35856.json",
      "version": "3"
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      "product_status:recommended": "59",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2024-35856",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2024-35856.json",
      "version": "19"
    },
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This is the standard Bluetooth adjacent-network attack surface, not a local syscall interface.\\nAC:L - The attacker fully controls the trigger (coredump packet stream) and can repeat it without limit, and the driver\u0027s own btmtk_reset_sync()/re-setup cycle after each coredump regenerates the window in which hci_devcd_append() takes its skb-consuming error path. 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      "cveMetadata": "{\"cveId\": \"CVE-2024-35856\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-05T11:30:20.835Z\", \"dateReserved\": \"2024-05-17T13:50:33.106Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-05-17T14:47:32.088Z\", \"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.