CVE-2024-46719
usb: typec: ucsi: Fix null pointer dereference in trace
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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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory 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
References (9)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Quick Info
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