What’s Vulnerable › Vulnerabilities

CVE-2024-35933: Bluetooth: btintel: Fix null ptr deref in btintel_read_version

• Severity: medium (CVSS 5.5 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: 2024-05-19 · updated 2026-10-15
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: btintel: Fix null ptr deref in btintel_read_version If hci_cmd_sync_complete() is triggered and skb is NULL, then hdev->req_skb is NULL, which will cause this issue.

Affected products

• Debian Linux: 10.0
• Linux kernel: before 4.19.312; from 4.20 before 5.4.274; from 5.5 before 5.10.215; from 5.11 before 5.15.155; from 5.16 before 6.1.86; from 6.2 before 6.6.27 — fixed in 4.19.312, 5.10.215, 5.15.155, 5.4.274, 6.1.86, 6.6.27

How to fix

Upgrade to a fixed version: Linux kernel 4.19.312, 5.10.215, 5.15.155, 5.4.274. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/22d3053ef05f0b5045e45bd91e7473846261d65e
• https://git.kernel.org/stable/c/b19fe5eea619d54eea59bb8a37c0f8d00ef0e912
• https://git.kernel.org/stable/c/b79e040910101b020931ba0c9a6b77e81ab7f645
• https://git.kernel.org/stable/c/ffdca0a62abaf8c41d8d9ea132000fd808de329b
• https://git.kernel.org/stable/c/006936ecb4edfc3102464044f75858c714e34d28
• https://git.kernel.org/stable/c/22d3053ef05f0b5045e45bd91e7473846261d65e
• https://git.kernel.org/stable/c/68a69bb2ecafaacdb998a87783068fb51736f43b
• https://git.kernel.org/stable/c/86e9b47e8a75c74b1bd83a479979b425c5dc8bd9
• https://git.kernel.org/stable/c/b19fe5eea619d54eea59bb8a37c0f8d00ef0e912
• https://git.kernel.org/stable/c/b79e040910101b020931ba0c9a6b77e81ab7f645
• https://git.kernel.org/stable/c/ec2049fb2b8be3e108fe2ef1f1040f91e72c9990
• https://git.kernel.org/stable/c/ffdca0a62abaf8c41d8d9ea132000fd808de329b

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