SB20251230238 - NULL pointer dereference in Linux kernel ethernet broadcom driver
Published: December 30, 2025 Updated: December 30, 2025
Security Bulletin ID
SB20251230238
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-2022-50877)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the bcm4908_enet_start_xmit() and bcm4908_enet_poll_tx() functions in drivers/net/ethernet/broadcom/bcm4908_enet.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/2adedc80faec243ede55355e57142110d6f46e08
- https://git.kernel.org/stable/c/c9589e18a60c55c76772a38117ef9a16b942e56b
- https://git.kernel.org/stable/c/ef3556ee16c68735ec69bd08df41d1cd83b14ad3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.77
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1