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CVE-2024-56605 (GCVE-0-2024-56605)

Vulnerability from cvelistv5 – Published: 2024-12-27 14:51 – Updated: 2026-08-05 11:45
VLAI
Title
Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create()
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create() bt_sock_alloc() allocates the sk object and attaches it to the provided sock object. On error l2cap_sock_alloc() frees the sk object, but the dangling pointer is still attached to the sock object, which may create use-after-free in other code.
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 2025-02-11 15:42 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 49dfbb9129c4edb318578de35cc45c555df37884 , < f6ad641646b67f29c7578dcd6c25813c7dcbf51e (git)
Affected: 49dfbb9129c4edb318578de35cc45c555df37884 , < daa13175a6dea312a76099066cb4cbd4fc959a84 (git)
Affected: 49dfbb9129c4edb318578de35cc45c555df37884 , < a8677028dd5123e5e525b8195483994d87123de4 (git)
Affected: 49dfbb9129c4edb318578de35cc45c555df37884 , < bb2f2342a6ddf7c04f9aefbbfe86104cd138e629 (git)
Affected: 49dfbb9129c4edb318578de35cc45c555df37884 , < 8ad09ddc63ace3950ac43db6fbfe25b40f589dd6 (git)
Affected: 49dfbb9129c4edb318578de35cc45c555df37884 , < 61686abc2f3c2c67822aa23ce6f160467ec83d35 (git)
Affected: 49dfbb9129c4edb318578de35cc45c555df37884 , < 7c4f78cdb8e7501e9f92d291a7d956591bf73be9 (git)
guessed Create a notification for this product.
Linux Linux Affected: 3.6
Unaffected: 0 , < 3.6 (semver)
Unaffected: 5.4.287 , ≤ 5.4.* (semver)
Unaffected: 5.10.231 , ≤ 5.10.* (semver)
Unaffected: 5.15.174 , ≤ 5.15.* (semver)
Unaffected: 6.1.120 , ≤ 6.1.* (semver)
Unaffected: 6.6.66 , ≤ 6.6.* (semver)
Unaffected: 6.12.5 , ≤ 6.12.* (semver)
Unaffected: 6.13 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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    "datePublished": "2024-12-27T14:51:10.344Z",
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    "dateUpdated": "2026-08-05T11:45:26.035Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2024-56605\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-12-27T15:15:19.980\",\"lastModified\":\"2026-06-17T08:12:31.787\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nBluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create()\\n\\nbt_sock_alloc() allocates the sk object and attaches it to the provided\\nsock object. On error l2cap_sock_alloc() frees the sk object, but the\\ndangling pointer is still attached to the sock object, which may create\\nuse-after-free in other code.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: Bluetooth: L2CAP: no dejar el puntero sk colgando en caso de error en l2cap_sock_create() bt_sock_alloc() asigna el objeto sk y lo adjunta al objeto sock proporcionado. En caso de error, l2cap_sock_alloc() libera el objeto sk, pero el puntero colgando sigue adjunto al objeto sock, lo que puede crear un use-after-free en otro 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Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-416\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.4.287\",\"matchCriteriaId\":\"DC7D5C80-B677-4131-A399-3366D7F3961C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.5\",\"versionEndExcluding\":\"5.10.231\",\"matchCriteriaId\":\"B5C644CC-2BD7-4E32-BC54-8DCC7ABE9935\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.11\",\"versionEndExcluding\":\"5.15.174\",\"matchCriteriaId\":\"419FD073-1517-4FD5-8158-F94BC68A1E89\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"6.1.120\",\"matchCriteriaId\":\"09AC6122-E2A4-40FE-9D33-268A1B2EC265\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.2\",\"versionEndExcluding\":\"6.6.66\",\"matchCriteriaId\":\"29A976AD-B9AB-4A95-9F08-7669F8847EB9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7\",\"versionEndExcluding\":\"6.12.5\",\"matchCriteriaId\":\"9501D045-7A94-42CA-8B03-821BE94A65B7\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/61686abc2f3c2c67822aa23ce6f160467ec83d35\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/7c4f78cdb8e7501e9f92d291a7d956591bf73be9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/8ad09ddc63ace3950ac43db6fbfe25b40f589dd6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/a8677028dd5123e5e525b8195483994d87123de4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/bb2f2342a6ddf7c04f9aefbbfe86104cd138e629\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/daa13175a6dea312a76099066cb4cbd4fc959a84\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/f6ad641646b67f29c7578dcd6c25813c7dcbf51e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T11:20:10+00:00",
      "cve": "CVE-2024-56605",
      "id": "CVE-2024-56605",
      "initial_release_date": "2024-12-27T00:00:00+00:00",
      "product_status:fixed": "305",
      "product_status:known_affected": "98",
      "product_status:known_not_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-56605.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html\"}, {\"url\": \"https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-03T20:50:51.126Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-56605\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-02-11T15:42:08.177341Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-11T15:42:09.612Z\"}}], \"cna\": {\"title\": \"Bluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create()\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"49dfbb9129c4edb318578de35cc45c555df37884\", \"lessThan\": \"f6ad641646b67f29c7578dcd6c25813c7dcbf51e\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"49dfbb9129c4edb318578de35cc45c555df37884\", \"lessThan\": \"daa13175a6dea312a76099066cb4cbd4fc959a84\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"49dfbb9129c4edb318578de35cc45c555df37884\", \"lessThan\": \"a8677028dd5123e5e525b8195483994d87123de4\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"49dfbb9129c4edb318578de35cc45c555df37884\", \"lessThan\": \"bb2f2342a6ddf7c04f9aefbbfe86104cd138e629\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"49dfbb9129c4edb318578de35cc45c555df37884\", \"lessThan\": \"8ad09ddc63ace3950ac43db6fbfe25b40f589dd6\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"49dfbb9129c4edb318578de35cc45c555df37884\", \"lessThan\": \"61686abc2f3c2c67822aa23ce6f160467ec83d35\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"49dfbb9129c4edb318578de35cc45c555df37884\", \"lessThan\": \"7c4f78cdb8e7501e9f92d291a7d956591bf73be9\", \"versionType\": \"git\"}], \"programFiles\": [\"net/bluetooth/l2cap_sock.c\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.6\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"3.6\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.4.287\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.4.*\"}, {\"status\": \"unaffected\", \"version\": \"5.10.231\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.10.*\"}, {\"status\": \"unaffected\", \"version\": \"5.15.174\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"6.1.120\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.1.*\"}, {\"status\": \"unaffected\", \"version\": \"6.6.66\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.6.*\"}, {\"status\": \"unaffected\", \"version\": \"6.12.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"6.12.*\"}, {\"status\": \"unaffected\", \"version\": \"6.13\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"net/bluetooth/l2cap_sock.c\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/f6ad641646b67f29c7578dcd6c25813c7dcbf51e\"}, {\"url\": \"https://git.kernel.org/stable/c/daa13175a6dea312a76099066cb4cbd4fc959a84\"}, {\"url\": \"https://git.kernel.org/stable/c/a8677028dd5123e5e525b8195483994d87123de4\"}, {\"url\": \"https://git.kernel.org/stable/c/bb2f2342a6ddf7c04f9aefbbfe86104cd138e629\"}, {\"url\": \"https://git.kernel.org/stable/c/8ad09ddc63ace3950ac43db6fbfe25b40f589dd6\"}, {\"url\": \"https://git.kernel.org/stable/c/61686abc2f3c2c67822aa23ce6f160467ec83d35\"}, {\"url\": \"https://git.kernel.org/stable/c/7c4f78cdb8e7501e9f92d291a7d956591bf73be9\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"In the Linux kernel, the following vulnerability has been resolved:\\n\\nBluetooth: L2CAP: do not leave dangling sk pointer on error in l2cap_sock_create()\\n\\nbt_sock_alloc() allocates the sk object and attaches it to the provided\\nsock object. On error l2cap_sock_alloc() frees the sk object, but the\\ndangling pointer is still attached to the sock object, which may create\\nuse-after-free in other code.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.287\", \"versionStartIncluding\": \"3.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.231\", \"versionStartIncluding\": \"3.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.174\", \"versionStartIncluding\": \"3.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.120\", \"versionStartIncluding\": \"3.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.6.66\", \"versionStartIncluding\": \"3.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.12.5\", \"versionStartIncluding\": \"3.6\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.13\", \"versionStartIncluding\": \"3.6\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2026-05-11T20:55:41.747Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-56605\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-11T20:55:41.747Z\", \"dateReserved\": \"2024-12-27T14:03:06.013Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-12-27T14:51:10.344Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.