What’s Vulnerable › Vulnerabilities

CVE-2024-46719: usb: typec: ucsi: Fix null pointer dereference in trace

• 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: 2024-09-18 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: usb: typec: ucsi: Fix null pointer dereference in trace ucsi_register_altmode checks IS_ERR for the alt pointer and treats NULL as valid. When CONFIG_TYPEC_DP_ALTMODE is not enabled, ucsi_register_displayport returns NULL which causes a NULL pointer dereference in trace. Rather than return NULL, call typec_port_register_altmode to register DisplayPort alternate mode as a non-controllable mode when CONFIG_TYPEC_DP_ALTMODE is not enabled.

Affected products

• Linux kernel: before 5.4.284; from 5.5 before 5.10.226; from 5.11 before 5.15.167; from 5.16 before 6.1.109; from 6.2 before 6.6.50; from 6.7 before 6.10.9 — fixed in 5.10.226, 5.15.167, 5.4.284, 6.1.109, 6.10.9, 6.6.50

How to fix

Upgrade to a fixed version: Linux kernel 5.10.226, 5.15.167, 5.4.284, 6.1.109. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3aa56313b0de06ce1911950b2cc0c269614a87a9
• https://git.kernel.org/stable/c/3b9f2d9301ae67070fe77a0c06758722fd7172b7
• https://git.kernel.org/stable/c/7e64cabe81c303bdf6fd26b6a09a3289b33bc870
• https://git.kernel.org/stable/c/8095bf0579ed4906a33f7bec675bfb29b6b16a3b
• https://git.kernel.org/stable/c/99331fe68a8eaa4097143a33fb0c12d5e5e8e830
• https://git.kernel.org/stable/c/99516f76db48e1a9d54cdfed63c1babcee4e71a5
• https://git.kernel.org/stable/c/b4243c05d7e3db0bdbf9124e6fa59b4ca7c807ae
• https://lists.debian.org/debian-lts-announce/2024/10/msg00003.html
• https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

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