CVE-2022-42896 (GCVE-0-2022-42896)

Vulnerability from cvelistv5 – Published: 2022-11-23 14:11 – Updated: 2025-04-21 13:45
VLAI
Title
Info Leak in l2cap_core in the Linux Kernel
Summary
There are use-after-free vulnerabilities in the Linux kernel's net/bluetooth/l2cap_core.c's l2cap_connect and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively) remotely via Bluetooth. A remote attacker could execute code leaking kernel memory via Bluetooth if within proximity of the victim. We recommend upgrading past commit  https://www.google.com/url https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4 https://www.google.com/url
Severity
8 (High)
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Kernel Affected: 3.0.0 , ≤ 711f8c3fb3db61897080468586b970c87c61d9e4 (custom)
Create a notification for this product.
Date Public
2022-11-02 23:00
Show details on NVD website
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      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://kernel.dance/#711f8c3fb3db61897080468586b970c87c61d9e4\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T13:19:05.444Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-42896\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-04-21T13:37:08.196759Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-04-21T13:37:09.564Z\"}}], \"cna\": {\"title\": \"Info Leak in l2cap_core in the Linux Kernel\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"impacts\": [{\"capecId\": \"CAPEC-253\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-253 Remote Code Inclusion\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 8, \"attackVector\": \"ADJACENT_NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"repo\": \"https://git.kernel.org\", \"vendor\": \"Linux\", \"product\": \"Linux Kernel\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.0.0\", \"versionType\": \"custom\", \"lessThanOrEqual\": \"711f8c3fb3db61897080468586b970c87c61d9e4\"}], \"packageName\": \"kernel\", \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2022-11-02T23:00:00.000Z\", \"references\": [{\"url\": \"https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4\"}, {\"url\": \"https://kernel.dance/#711f8c3fb3db61897080468586b970c87c61d9e4\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"There are use-after-free vulnerabilities in the Linux kernel\u0027s net/bluetooth/l2cap_core.c\u0027s l2cap_connect and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively) remotely via Bluetooth.\\u00a0A remote attacker could execute code leaking kernel memory via Bluetooth if within proximity of the victim.\\n\\nWe recommend upgrading past commit\\u00a0  https://www.google.com/url  https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4 https://www.google.com/url \\n\\n\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003e\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eThere are use-after-free vulnerabilities in the Linux kernel\u0027s net/bluetooth/l2cap_core.c\u0027s l2cap_connect and l2cap_le_connect_req functions which may allow code execution and leaking kernel memory (respectively) remotely via Bluetooth.\u0026nbsp;\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eA remote attacker could execute code leaking kernel memory via Bluetooth if within proximity of the victim.\u003c/span\u003e\u003cbr\u003e\u003c/span\u003e\u003c/span\u003e\u003cbr\u003eWe recommend upgrading past commit\u0026nbsp;\u003ca target=\\\"_blank\\\" rel=\\\"nofollow\\\" href=\\\"https://www.google.com/url?q=https://github.com/torvalds/linux/commit/b1a2cd50c0357f243b7435a732b4e62ba3157a2e\u0026amp;sa=D\u0026amp;source=buganizer\u0026amp;usg=AOvVaw1MgsfyPTiSrqqs3LAs-ZRS\\\"\u003e\u003c/a\u003e\u003ca target=\\\"_blank\\\" rel=\\\"nofollow\\\" href=\\\"https://www.google.com/url?q=https://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4\u0026amp;sa=D\u0026amp;source=buganizer\u0026amp;usg=AOvVaw22K1DH0yRHxuiaUXy9_wmV\\\"\u003ehttps://github.com/torvalds/linux/commit/711f8c3fb3db61897080468586b970c87c61d9e4\u003c/a\u003e\u003cbr\u003e\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-416\", \"description\": \"CWE-416 Use After Free\"}]}], \"providerMetadata\": {\"orgId\": \"14ed7db2-1595-443d-9d34-6215bf890778\", \"shortName\": \"Google\", \"dateUpdated\": \"2022-11-23T14:13:44.351Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-42896\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-04-21T13:45:57.600Z\", \"dateReserved\": \"2022-10-12T18:30:19.769Z\", \"assignerOrgId\": \"14ed7db2-1595-443d-9d34-6215bf890778\", \"datePublished\": \"2022-11-23T14:11:56.811Z\", \"requesterUserId\": \"ed9b5bb2-2df1-4aa3-9791-5fb260d88e62\", \"assignerShortName\": \"Google\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Tags
Taxonomy of the tags.





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.