SB2026020524 - Improper locking in Linux kernel net ipvlan driver
Published: February 5, 2026
Security Bulletin ID
SB2026020524
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) Improper locking (CVE-ID: CVE-2026-23103)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the ipvlan_port_create(), ipvlan_uninit(), ipvlan_open(), ipvlan_stop(), ipvlan_link_new(), ipvlan_link_delete(), ipvlan_add_addr(), ipvlan_del_addr(), ipvlan_add_addr6(), ipvlan_addr6_validator_event() and ipvlan_addr4_validator_event() functions in drivers/net/ipvlan/ipvlan_main.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.