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CVE-2024-42154 is an input-validation vulnerability in the Linux kernel tcp_metrics subsystem. The TCP_METRICS_ATTR_SADDR_IPV4 attribute is not checked to ensure that its payload contains at least four bytes, and the attribute-validation policy lacks an entry for it. Consequently, undersized IPv4 source-address attributes are not properly validated. The IPv6 source-address attribute also lacks a policy entry, but its length is manually validated. The fix adds source-address length validation.
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No public exploit code observed for this vulnerability.
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11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel TCP metrics vulnerability involving missing IPv4 source-address length validation. The advisory identifies affected Google Container-Optimized OS kernel packages and rates the flaw medium severity, with a CVSS v3 score of 4.4. Its vector indicates local access and low privileges are required, with low confidentiality and integrity impacts. The prescribed fix is to update sys-kernel/lakitu-kernel-6_1 and related packages to version 18567.0.0 or later.
A Linux kernel tcp_metrics input-validation vulnerability involving insufficient validation of the TCP_METRICS_ATTR_SADDR_IPV4 source-address attribute length. The referenced Google COS lakitu-kernel-6_1 package is affected and fixed in version 18244.151.9 or later.
A locally exploitable vulnerability requiring low privileges that can result in limited confidentiality and integrity impact. The referenced Unity Linux advisory patch was published on 2026-07-27.
Linux kernel TCP metrics issue caused by insufficient source-address length validation.
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.