CVE-2026-43452

A flaw was found in the Linux kernel's netfilter component, specifically within the xt_tcpudp and xt_dccp option walkers. When processing network packet options, a 1-byte tail read vulnerability allows the system to access memory beyond the intended buffer. This out-of-bounds read could potentially lead to information disclosure or a denial of service.

Red Hat acknowledges the upstream Linux kernel correction for «netfilter» 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.