Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 3.14, < 5.10.252 |
References
- https://git.kernel.org/stable/c/138d7eca445ef37a0333425d269ee59900ca1104Patch
- https://git.kernel.org/stable/c/335071c0c3637064ec250481f589075db44fe4e6Patch
- https://git.kernel.org/stable/c/481ea39b342c347b6ac029f3d418486280be4e45Patch
- https://git.kernel.org/stable/c/8dd43f9a9323f9c01bc8246da8d81a4c783c9e97Patch
- https://git.kernel.org/stable/c/9118601ff90b79e8df3c0c98f48ae00c1b02ecefPatch
- https://git.kernel.org/stable/c/96581749c7c14fbec32c35728520867929600041Patch
- https://git.kernel.org/stable/c/ec91078e132179b04e0c3906b599816c056ceaadPatch
- https://git.kernel.org/stable/c/fa6ad76fa8623c0a50d529cd5726fa5d819a3be4Patch
FAQ
What is CVE-2026-43134?
CVE-2026-43134 is a vulnerability with a CVSS score of 8.1 (HIGH). 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_...
How severe is CVE-2026-43134?
CVE-2026-43134 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43134?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.