CVE-2025-21773

5.5 mediumEPSS 0.2%

Medium (5.5) in linux linux kernel. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

5.5 medium

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 12% of CVEs (scores of 2026-10-31)
CWE: CWE-476
Published: 2025-02-27
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

linux:linux_kernel

References

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

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