CVE-2024-46719: usb: typec: ucsi: Fix null pointer dereference in trace
First published: Wed Sep 18 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <5.4.284 | |
| Linux Linux kernel | >=5.5<5.10.226 | |
| Linux Linux kernel | >=5.11<5.15.167 | |
| Linux Linux kernel | >=5.16<6.1.109 | |
| Linux Linux kernel | >=6.2<6.6.50 | |
| Linux Linux kernel | >=6.7<6.10.9 | |
| debian/linux | <=5.10.223-1 | 5.10.226-1 6.1.115-1 6.1.112-1 6.11.7-1 |
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Reference Links
- 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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-46719
- https://nvd.nist.gov/vuln/detail/CVE-2024-46719
- https://launchpad.net/bugs/cve/CVE-2024-46719
- https://security-tracker.debian.org/tracker/CVE-2024-46719
- https://ubuntu.com/security/CVE-2024-46719
- https://git.kernel.org/linus/99516f76db48e1a9d54cdfed63c1babcee4e71a5
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