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.

Classification

CVE ID: CVE-2025-21773

Affected Products

Vendor: Linux, Linux

Product: Linux, Linux

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 1.64% (scored less or equal to compared to others)

EPSS Date: 2025-03-27 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-21773
https://git.kernel.org/stable/c/1590667a60753ee5a54871f2840ceefd4a7831fa
https://git.kernel.org/stable/c/722e8e1219c8b6ac2865011fe339315d6a8d0721
https://git.kernel.org/stable/c/5059ea98d7bc133903d3e47ab36df6ed11d0c95f
https://git.kernel.org/stable/c/a1ad2109ce41c9e3912dadd07ad8a9c640064ffb

Timeline