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CVE-2025-38441 is a Linux kernel vulnerability in the netfilter flowtable path affecting PPPoE protocol handling in nf_flow_pppoe_proto(). The flaw was introduced by code that failed to account for the Ethernet header when processing packets, which can cause the kernel to operate on uninitialized data. Kernel Memory Sanitizer testing reported a potential uninitialized-value access reachable from nf_flow_offload_inet_hook in the netfilter flowtable ingress path. The issue is resolved by correcting the packet header accounting so the Ethernet header is properly included during PPPoE flow processing.
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What an attacker gets, and what they’ve been doing with it.
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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.
15 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.