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CVE-2025-38201 is an integer-size handling flaw in the Linux kernel netfilter nft_set_pipapo implementation. An unconstrained maximum map bucket size can reach values exceeding INT_MAX when a pipapo set hash table is resized. The resulting allocation path can trigger WARN_ON_ONCE in __kvmalloc_node_noprof() because the allocation is performed without __GFP_NOWARN. The upstream fix clamps the maximum map bucket size to INT_MAX before resizing.
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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.
22 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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.