CVE-2026-43134
Published: May 7, 2026Last modified: May 7, 2026
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ This adds a check for encryption key size upon receiving L2CAP_LE_CONN_REQ which is required by L2CAP/LE/CFC/BV-15-C which expects L2CAP_CR_LE_BAD_KEY_SIZE.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.1 |
| Attack Vector | ADJACENT_NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | NONE |
| Vector | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.167-r0) |
| 25 LTS | linux-lts | Fixed (6.12.80-r0) | |
| Stream | linux-lts | Fixed (6.12.76-r0) |
References
- https://git.kernel.org/stable/c/138d7eca445ef37a0333425d269ee59900ca1104
- https://git.kernel.org/stable/c/335071c0c3637064ec250481f589075db44fe4e6
- https://git.kernel.org/stable/c/481ea39b342c347b6ac029f3d418486280be4e45
- https://git.kernel.org/stable/c/8dd43f9a9323f9c01bc8246da8d81a4c783c9e97
- https://git.kernel.org/stable/c/9118601ff90b79e8df3c0c98f48ae00c1b02ecef
- https://git.kernel.org/stable/c/96581749c7c14fbec32c35728520867929600041
- https://git.kernel.org/stable/c/ec91078e132179b04e0c3906b599816c056ceaad
- https://git.kernel.org/stable/c/fa6ad76fa8623c0a50d529cd5726fa5d819a3be4