SB2025122332 - NULL pointer dereference in Linux kernel can usb driver
Published: December 23, 2025
Security Bulletin ID
SB2025122332
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2025-68343)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the gs_usb_receive_bulk_callback() function in drivers/net/can/usb/gs_usb.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/18cbce43363c9f84b90a92d57df341155eee0697
- https://git.kernel.org/stable/c/3433680b759646efcacc64fe36aa2e51ae34b8f0
- https://git.kernel.org/stable/c/616eee3e895b8ca0028163fcb1dce5e3e9dea322
- https://git.kernel.org/stable/c/6fe9f3279f7d2518439a7962c5870c6e9ecbadcf
- https://git.kernel.org/stable/c/f31693dc3a584c0ad3937e857b59dbc1a7ed2b87