CVE-2026-53131
kernel: netfilter: require Ethernet MAC header before using eth_hdr()
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · June 25, 2026
Updated · September 17, 2026
Description
A flaw was found in the Linux kernel's netfilter component. Certain netfilter modules, including ip6t_eui64 and xt_mac, accessed Ethernet MAC header data without first verifying that an Ethernet device was associated with the network packet or that the MAC header was present and of sufficient length. This oversight could allow a local or remote attacker to trigger an out-of-bounds read, potentially leading to a system crash and a Denial of Service (DoS).
CVSS score applicability
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.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-125 · Out-of-bounds Read