can: etas_es58x: fix potential NULL pointer dereference on udev->serial
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.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- 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
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21773.json
- https://nvd.nist.gov/vuln/detail/CVE-2025-21773