CVE-2024-50150: 
Linux Kernel vulnerability analysis and mitigation

CVE-2024-50150 affects the Linux kernel's USB Type-C alternate mode implementation. The vulnerability was discovered in the kernel's USB subsystem, specifically in the typec altmode functionality where the altmode device release refers to its parent device without maintaining a proper reference to it. This issue affects Linux kernel versions from 4.19 through 6.11.6 (NVD).

The vulnerability is a use-after-free issue (CWE-416) in the USB Type-C subsystem. When using CONFIGDEBUGKOBJECT_RELEASE, the system experiences issues where the kobject release shows parent references as 0000000000000000, indicating an invalid parent reference. The CVSS v3.1 base score is 7.8 (HIGH) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, indicating local access requirements but high impact potential (NVD).

The vulnerability could lead to a use-after-free condition in the kernel's USB Type-C subsystem, potentially resulting in system crashes, memory corruption, or privilege escalation. The high CVSS score indicates potential for significant impact on system confidentiality, integrity, and availability (NVD).

The issue has been fixed in the Linux kernel through a patch that properly maintains parent device references. The fix involves adding getdevice() and putdevice() calls to maintain proper reference counting for the parent device. The patch has been backported to multiple stable kernel versions (Kernel Patch).