CVE-2025-21773 Information

Description

In the Linux kernel the following vulnerability has been resolved:

can: etas_es58x: fix potential NULL pointer dereference on udev->serial

The driver assumed that es58x_dev->udev->serial could never be NULL. While this is true on commercially available devices an attacker could spoof the device identity providing a NULL USB serial number. That would trigger a NULL pointer dereference.

Add a check on es58x_dev->udev->serial before accessing it.

Reference

https://git.kernel.org/stable/c/1590667a60753ee5a54871f2840ceefd4a7831fa https://git.kernel.org/stable/c/5059ea98d7bc133903d3e47ab36df6ed11d0c95f https://git.kernel.org/stable/c/722e8e1219c8b6ac2865011fe339315d6a8d0721 https://git.kernel.org/stable/c/a1ad2109ce41c9e3912dadd07ad8a9c640064ffb