Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-05-08T00:00:00 kernel: netfilter: x_tables: guard option walkers against 1-byte tail reads 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CWE-193

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 Enterprise Linux 10 Affected kernel Red Hat Enterprise Linux 6 Out of support scope kernel Red Hat Enterprise Linux 7 Affected kernel Red Hat Enterprise Linux 7 Affected kernel-rt Red Hat Enterprise Linux 8 Affected kernel Red Hat Enterprise Linux 8 Affected kernel-rt Red Hat Enterprise Linux 9 Affected kernel Red Hat Enterprise Linux 9 Affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-43452 https://nvd.nist.gov/vuln/detail/CVE-2026-43452 https://lore.kernel.org/linux-cve-announce/2026050858-CVE-2026-43452-9210@gregkh/T