What’s Vulnerable › Vulnerabilities

CVE-2024-35965: Bluetooth: L2CAP: Fix not validating setsockopt user input

• Severity: high (CVSS 7.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-20 · updated 2026-10-15
• Weakness: CWE-1284

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix not validating setsockopt user input Check user input length before copying data.

Affected products

• Linux kernel: from 2.6.39 before 5.10.227; from 5.11 before 6.1.87; from 6.2 before 6.6.55; from 6.7 before 6.8.7; 6.9-rc1, 6.9-rc2, 6.9-rc3 — fixed in 5.10.227, 6.1.87, 6.6.55, 6.8.7

How to fix

Upgrade to a fixed version: Linux kernel 5.10.227, 6.1.87, 6.6.55, 6.8.7. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/28234f8ab69c522ba447f3e041bbfbb284c5959a
• https://git.kernel.org/stable/c/4f3951242ace5efc7131932e2e01e6ac6baed846
• https://git.kernel.org/stable/c/8ee0c132a61df9723813c40e742dc5321824daa9
• https://git.kernel.org/stable/c/9d42f373391211c7c8af66a3a316533a32b8a607
• https://git.kernel.org/stable/c/f13b04cf65a86507ff15a9bbf37969d25be3e2a0
• https://git.kernel.org/stable/c/4f3951242ace5efc7131932e2e01e6ac6baed846
• https://git.kernel.org/stable/c/8ee0c132a61df9723813c40e742dc5321824daa9
• https://git.kernel.org/stable/c/9d42f373391211c7c8af66a3a316533a32b8a607
• https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
• https://cert-portal.siemens.com/productcert/html/ssa-265688.html

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