CVE-2026-43134

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.

CVSS 3.1

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

EPSS

0.1% chance of exploitation in the next 30 days; higher than 1% of CVEs (scores of 2026-10-25)

CWE

CWE-326

Published

2026-05-06

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• linux:linux_kernel

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

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