SB2026020262 - NULL pointer dereference in Linux kernel ethernet 3com driver
Published: February 2, 2026
Security Bulletin ID
SB2026020262
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-2026-23020)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the vortex_probe1() function in drivers/net/ethernet/3com/3c59x.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/053ac9e37eee435e999277c0f1ef890dad6064bf
- https://git.kernel.org/stable/c/28b2a805609699be7b90020ae7dccfb234be1ceb
- https://git.kernel.org/stable/c/2f05f7737e16d9a40038cc1c38a96a3f7964898b
- https://git.kernel.org/stable/c/606872c8e8bf96066730f6a2317502c5633c37f1
- https://git.kernel.org/stable/c/6cff14b831dbdb32675b4c7904dcc3eeeaf47e9d
- https://git.kernel.org/stable/c/a4e305ed60f7c41bbf9aabc16dd75267194e0de3
- https://git.kernel.org/stable/c/d82796a57cc0dac1dbef19d913c8f02a8cc7b1a7