SB2026020261 - NULL pointer dereference in Linux kernel marvell prestera driver
Published: February 2, 2026
Security Bulletin ID
SB2026020261
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-2026-23019)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the prestera_devlink_alloc() function in drivers/net/ethernet/marvell/prestera/prestera_devlink.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/325aea74be7e192b5c947c782da23b0d19a5fda2
- https://git.kernel.org/stable/c/326a4b7e61d01db3507f71c8bb5e85362f607064
- https://git.kernel.org/stable/c/3950054c9512add0cc79ab7e72b6d2f9f675e25b
- https://git.kernel.org/stable/c/8a4333b2818f0d853b43e139936c20659366e4a0
- https://git.kernel.org/stable/c/94e070cd50790317fba7787ae6006934b7edcb6f
- https://git.kernel.org/stable/c/a428e0da1248c353557970848994f35fd3f005e2