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CVE-2026-53131 is an out-of-bounds read vulnerability in Linux kernel Netfilter packet-processing paths that use eth_hdr(skb). The ip6t_eui64 and xt_mac modules, the bitmap:ip,mac, hash:ip,mac, and hash:mac ipset types, and nf_log_syslog could access an Ethernet header after only assuming an Ethernet-associated socket buffer or performing inadequate MAC-header bounds validation. The fix requires verification that the socket buffer is associated with an Ethernet device, has a MAC header set, and that the MAC header spans a complete Ethernet header before eth_hdr(skb) is accessed.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
39 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability addressed by Alma Linux advisory RHSA-2026:68531; no technical details are supplied.
Unknown
A Linux kernel vulnerability addressed by the referenced AlmaLinux 10 kernel-package advisory; no technical flaw details are provided.
A vulnerability addressed by the AlmaLinux ALSA-2026:68532 kernel-rt security advisory.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.