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CVE-2025-38441 is an uninitialized-value access vulnerability in the Linux kernel netfilter flowtable PPPoE protocol handling path. The defect is in nf_flow_pppoe_proto(), where Ethernet-header accounting was omitted. Processing subsequently reaches nf_flow_offload_inet_hook with an uninitialized value, as detected by KMSAN.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
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.
16 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A locally exploitable availability-impacting vulnerability affecting Google COS sys-kernel/csql-kernel-6_1 packages prior to version 18244.448.50.
Linux kernel netfilter flowtable vulnerability involving incorrect Ethernet header accounting in nf_flow_pppoe_proto().
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.