SB2026020558 - Buffer overflow in Linux kernel net hyperv driver
Published: February 5, 2026
Security Bulletin ID
SB2026020558
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) Buffer overflow (CVE-ID: CVE-2026-23054)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory corruption within the netvsc_set_rxfh() function in drivers/net/hyperv/netvsc_drv.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.