The vulnerability of the hsr_addr_is_self() function in the net/hsr/hsr_framereg.c module, which allows a hacker to cause a service failure.

The vulnerability of the hsraddrisself function in the net/hsr/hsrframereg.c module, which is part of the Linux kernel’s networking functions, involves premature release of resources during their lifetime. Exploiting this vulnerability could allow an attacker to cause service failures...

CVE-2026-53353

A flaw was found in the Linux kernel's High-availability Seamless Redundancy HSR module. An incorrect assumption in the hsraddrisself function regarding the selfnode during device unregistration could lead to unexpected system behavior. This occurs because the selfnode is cleared before the devic...

CVE-2026-53353 hsr: Remove WARN_ONCE() in hsr_addr_is_self().

In the Linux kernel, the following vulnerability has been resolved: hsr: Remove WARNONCE in hsraddrisself. syzbot reported the warning 0 in hsraddrisself, whose assumption is simply wrong. hsr-selfnode is cleared in hsrdelselfnode, which is called from hsrdellink. Since dev-rtnllinkops-dellink is...

CVE-2026-53353: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: hsr: Remove WARNONCE in hsraddrisself. syzbot reported the warning 0 in hsraddrisself, whose assumption is simply wrong. hsr-selfnode is cleared in hsrdelselfnode, which is called from hsrdellink. Since dev-rtnllinkops-dellink is...