SB2025042278 - NULL pointer dereference in Linux kernel net can driver
Published: April 22, 2025 Updated: May 10, 2025
Security Bulletin ID
SB2025042278
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-2020-36789)
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_get_echo_skb() function in drivers/net/can/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/2283f79b22684d2812e5c76fc2280aae00390365
- https://git.kernel.org/stable/c/248b71ce92d4f3a574b2537f9838f48e892618f4
- https://git.kernel.org/stable/c/3a922a85701939624484e7f2fd07d32beed00d25
- https://git.kernel.org/stable/c/451187b20431924d13fcfecc500d7cd2d9951bac
- https://git.kernel.org/stable/c/7e4cf2ec0ca236c3e5f904239cec6efe1f3baf22
- https://git.kernel.org/stable/c/87530b557affe01c764de32dbeb58cdf47234574
- https://git.kernel.org/stable/c/ab46748bf98864f9c3f5559060bf8caf9df2b41e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.78