CVE-2022-48947
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Bluetooth: L2CAP: Fix u8 overflow
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 ........@...
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| f2fcfcd670257236ebf2088bbdf26f6a8ef459fe | affected | git | 49d5867819ab7c744852b45509e8469839c07e0e | Unavailable | None listed |
| f2fcfcd670257236ebf2088bbdf26f6a8ef459fe | affected | git | 95f1847a361c7b4bf7d74c06ecb6968455082c1a | Unavailable | None listed |
| f2fcfcd670257236ebf2088bbdf26f6a8ef459fe | affected | git | ad528fde0702903208d0a79d88d5a42ae3fc235b | Unavailable | None listed |
| f2fcfcd670257236ebf2088bbdf26f6a8ef459fe | affected | git | 9fdc79b571434af7bc742da40a3405f038b637a7 | Unavailable | None listed |
| f2fcfcd670257236ebf2088bbdf26f6a8ef459fe | affected | git | f3fe6817156a2ad4b06f01afab04638a34d7c9a6 | Unavailable | None listed |
| f2fcfcd670257236ebf2088bbdf26f6a8ef459fe | affected | git | 19a78143961a197de8502f4f29c453b913dc3c29 | Unavailable | None listed |
| f2fcfcd670257236ebf2088bbdf26f6a8ef459fe | affected | git | 5550bbf709c323194881737fd290c4bada9e6ead | Unavailable | None listed |
| f2fcfcd670257236ebf2088bbdf26f6a8ef459fe | affected | git | bcd70260ef56e0aee8a4fc6cd214a419900b0765 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 2.6.32 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.32 | Unavailable | None listed |
| 4.9.337 | unaffected | semver | Unavailable | 4.9.* | None listed |
| 4.14.303 | unaffected | semver | Unavailable | 4.14.* | None listed |
| 4.19.270 | unaffected | semver | Unavailable | 4.19.* | None listed |
| 5.4.229 | unaffected | semver | Unavailable | 5.4.* | None listed |
| 5.10.161 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.85 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.0.15 | unaffected | semver | Unavailable | 6.0.* | None listed |
| 6.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |