CVE-2026-43134

HighCVSS 8.1/10Last modified Nov 11, 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.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-326

Affected software

VendorProductVersions
LinuxLinux>= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d, < 335071c0c3637064ec250481f589075db44fe4e6; >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d, < fa6ad76fa8623c0a50d529cd5726fa5d819a3be4; >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d, < 9118601ff90b79e8df3c0c98f48ae00c1b02ecef; >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d, < 481ea39b342c347b6ac029f3d418486280be4e45; >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d, < ec91078e132179b04e0c3906b599816c056ceaad; >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d, < 96581749c7c14fbec32c35728520867929600041; >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d, < 8dd43f9a9323f9c01bc8246da8d81a4c783c9e97; >= 27e2d4c8d28be1d1b4ecfbffab572d7dbd35254d, < 138d7eca445ef37a0333425d269ee59900ca1104
LinuxLinux3.14

References

Timeline

Published
May 6, 2026
Last modified
Nov 11, 2026
NVD status
Modified

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CVE-2026-43134: High severity, CVSS 8.1 | Vulnix