CVE-2024-40903 Information

Description

In the Linux kernel the following vulnerability has been resolved:

usb: typec: tcpm: fix use-after-free case in tcpm_register_source_caps

There could be a potential use-after-free case in tcpm_register_source_caps(). This could happen when: new (say invalid) source caps are advertised the existing source caps are unregistered tcpm_register_source_caps() returns with an error as usb_power_delivery_register_capabilities() fails

This causes port->partner_source_caps to hold on to the now freed source caps.

Reset port->partner_source_caps value to NULL after unregistering existing source caps.

Reference

https://git.kernel.org/stable/c/4053696594d7235f3638d49a00cf0f289e4b36a3 https://git.kernel.org/stable/c/04c05d50fa79a41582f7bde8a1fd4377ae4a39e5 https://git.kernel.org/stable/c/6b67b652849faf108a09647c7fde9b179ef24e2b https://git.kernel.org/stable/c/e7e921918d905544500ca7a95889f898121ba886