CVE-2025-21773

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

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.

Category

5.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Affected: Linux Linux
Affected: Linux Linux
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2025-21773?
CVE-2025-21773 has been scored as a medium severity vulnerability.
How to fix CVE-2025-21773?
To fix CVE-2025-21773, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-21773 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-21773 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-21773?
CVE-2025-21773 affects Linux Linux, Linux Linux.
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