CVE-2022-48947 (GCVE-0-2022-48947)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:05 – Updated: 2025-12-23 13:21
VLAI?
Title
Bluetooth: L2CAP: Fix u8 overflow
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix u8 overflow By keep sending L2CAP_CONF_REQ packets, chan->num_conf_rsp increases multiple times and eventually it will wrap around the maximum number (i.e., 255). This patch prevents this by adding a boundary check with L2CAP_MAX_CONF_RSP Btmon log: Bluetooth monitor ver 5.64 = Note: Linux version 6.1.0-rc2 (x86_64) 0.264594 = Note: Bluetooth subsystem version 2.22 0.264636 @ MGMT Open: btmon (privileged) version 1.22 {0x0001} 0.272191 = New Index: 00:00:00:00:00:00 (Primary,Virtual,hci0) [hci0] 13.877604 @ RAW Open: 9496 (privileged) version 2.22 {0x0002} 13.890741 = Open Index: 00:00:00:00:00:00 [hci0] 13.900426 (...) > ACL Data RX: Handle 200 flags 0x00 dlen 1033 #32 [hci0] 14.273106 invalid packet size (12 != 1033) 08 00 01 00 02 01 04 00 01 10 ff ff ............ > ACL Data RX: Handle 200 flags 0x00 dlen 1547 #33 [hci0] 14.273561 invalid packet size (14 != 1547) 0a 00 01 00 04 01 06 00 40 00 00 00 00 00 ........@..... > ACL Data RX: Handle 200 flags 0x00 dlen 2061 #34 [hci0] 14.274390 invalid packet size (16 != 2061) 0c 00 01 00 04 01 08 00 40 00 00 00 00 00 00 04 ........@....... > ACL Data RX: Handle 200 flags 0x00 dlen 2061 #35 [hci0] 14.274932 invalid packet size (16 != 2061) 0c 00 01 00 04 01 08 00 40 00 00 00 07 00 03 00 ........@....... = bluetoothd: Bluetooth daemon 5.43 14.401828 > ACL Data RX: Handle 200 flags 0x00 dlen 1033 #36 [hci0] 14.275753 invalid packet size (12 != 1033) 08 00 01 00 04 01 04 00 40 00 00 00 ........@...
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < 49d5867819ab7c744852b45509e8469839c07e0e (git)
Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < 95f1847a361c7b4bf7d74c06ecb6968455082c1a (git)
Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < ad528fde0702903208d0a79d88d5a42ae3fc235b (git)
Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < 9fdc79b571434af7bc742da40a3405f038b637a7 (git)
Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < f3fe6817156a2ad4b06f01afab04638a34d7c9a6 (git)
Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < 19a78143961a197de8502f4f29c453b913dc3c29 (git)
Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < 5550bbf709c323194881737fd290c4bada9e6ead (git)
Affected: f2fcfcd670257236ebf2088bbdf26f6a8ef459fe , < bcd70260ef56e0aee8a4fc6cd214a419900b0765 (git)
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    Linux Linux Affected: 2.6.32
Unaffected: 0 , < 2.6.32 (semver)
Unaffected: 4.9.337 , ≤ 4.9.* (semver)
Unaffected: 4.14.303 , ≤ 4.14.* (semver)
Unaffected: 4.19.270 , ≤ 4.19.* (semver)
Unaffected: 5.4.229 , ≤ 5.4.* (semver)
Unaffected: 5.10.161 , ≤ 5.10.* (semver)
Unaffected: 5.15.85 , ≤ 5.15.* (semver)
Unaffected: 6.0.15 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
Create a notification for this product.
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0.264636\\n@ MGMT Open: btmon (privileged) version 1.22                  {0x0001} 0.272191\\n= New Index: 00:00:00:00:00:00 (Primary,Virtual,hci0)          [hci0] 13.877604\\n@ RAW Open: 9496 (privileged) version 2.22                   {0x0002} 13.890741\\n= Open Index: 00:00:00:00:00:00                                [hci0] 13.900426\\n(...)\\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 1033             #32 [hci0] 14.273106\\n        invalid packet size (12 != 1033)\\n        08 00 01 00 02 01 04 00 01 10 ff ff              ............\\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 1547             #33 [hci0] 14.273561\\n        invalid packet size (14 != 1547)\\n        0a 00 01 00 04 01 06 00 40 00 00 00 00 00        ........@.....\\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 2061             #34 [hci0] 14.274390\\n        invalid packet size (16 != 2061)\\n        0c 00 01 00 04 01 08 00 40 00 00 00 00 00 00 04  ........@.......\\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 2061             #35 [hci0] 14.274932\\n        invalid packet size (16 != 2061)\\n        0c 00 01 00 04 01 08 00 40 00 00 00 07 00 03 00  ........@.......\\n= bluetoothd: Bluetooth daemon 5.43                                   14.401828\\n\u003e ACL Data RX: Handle 200 flags 0x00 dlen 1033             #36 [hci0] 14.275753\\n        invalid packet size (12 != 1033)\\n        08 00 01 00 04 01 04 00 40 00 00 00              ........@...\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.9.337\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.14.303\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.270\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.229\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.161\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.85\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.0.15\", \"versionStartIncluding\": \"2.6.32\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1\", \"versionStartIncluding\": \"2.6.32\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"shortName\": \"Linux\", \"dateUpdated\": \"2025-12-23T13:21:14.514Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2022-48947\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-12-23T13:21:14.514Z\", \"dateReserved\": \"2024-08-22T01:27:53.624Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-10-21T20:05:36.491Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

Author Source Type Date

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.