SB20251230221 - NULL pointer dereference in Linux kernel ethernet mediatek driver
Published: December 30, 2025 Updated: December 30, 2025
Security Bulletin ID
SB20251230221
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-2023-54240)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the mtk_hwlro_get_fdir_all() function in drivers/net/ethernet/mediatek/mtk_eth_soc.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/072324cfab9b96071c0782f51f53cc5aea1e9d5b
- https://git.kernel.org/stable/c/653fbddbdfc6673bba01b13dae5a4384ad8f92ec
- https://git.kernel.org/stable/c/751b2e22a188b0c306029d094da29b6b8de31430
- https://git.kernel.org/stable/c/75f2de75c1182e80708c932418e4895dbc88b68f
- https://git.kernel.org/stable/c/7776591e5ae2befff86579f68916a171971c6aab
- https://git.kernel.org/stable/c/e4c79810755f66c9a933ca810da2724133b1165a
- https://git.kernel.org/stable/c/fe0195fe48f85182bc7e7eabcad925bd3cbc10f5
- https://git.kernel.org/stable/c/ff5faed5f5487b0fd2b640ba1304f82a5ebaab42
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.54