SB2025082862 - NULL pointer dereference in Linux kernel can dev driver
Published: August 28, 2025
Security Bulletin ID
SB2025082862
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-2025-38665)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the can_changelink() function in drivers/net/can/dev/netlink.c, within the can_change_state(), can_restart() and can_restart_now() functions in drivers/net/can/dev/dev.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/0ca816a96fdcf32644c80cbe7a82c7b6ce6ddda5
- https://git.kernel.org/stable/c/6acceb46180f9e160d4f0c56fcaf39ba562822ae
- https://git.kernel.org/stable/c/6bbcf37c5114926c99a1d1e6993a5b35689d2599
- https://git.kernel.org/stable/c/c1f3f9797c1f44a762e6f5f72520b2e520537b52
- https://git.kernel.org/stable/c/cf81a60a973358dea163f6b14062f17831ceb894