Bug 2467112 (CVE-2026-43134) - CVE-2026-43134 kernel: Bluetooth: L2CAP: Fix missing key size check for L2CAP_LE_CONN_REQ
Summary: CVE-2026-43134 kernel: Bluetooth: L2CAP: Fix missing key size check for L2CAP...
Keywords:
Status: NEW
Alias: CVE-2026-43134
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-06 13:04 UTC by OSIDB Bzimport
Modified: 2026-05-06 18:08 UTC (History)
2 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-05-06 13:04:55 UTC 
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.
Comment 1 Keith Grant 2026-05-06 18:07:06 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050622-CVE-2026-43134-ce6b@gregkh/T
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