CVE-2026-43441

A flaw was found in the Linux kernel's bonding network interface. When IPv6 is disabled and bonding ARP/NS validation is enabled, a specially crafted IPv6 Neighbor Solicitation (NS) or Neighbor Advertisement (NA) packet received on a slave interface can trigger a NULL pointer dereference. This vulnerability can lead to a system crash, resulting in a Denial of Service (DoS).

Red Hat acknowledges the upstream Linux kernel correction for «net» as described in COMMENT_ZERO. Fixes are delivered through standard kernel errata for supported products. Operational exposure depends on whether this subsystem or driver is active in your configuration.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.