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CVE-2025-37789 is an improper input-validation vulnerability in the Linux kernel Open vSwitch implementation. The Open vSwitch set() action could access the length of a nested netlink key attribute before verifying that the supplied attribute contains a complete netlink header. A malformed, undersized nested key can therefore cause invalid parsing of attacker-controlled netlink data. The upstream correction validates the attribute before its length is accessed.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Linux kernel vulnerability in net/openvswitch involving nested key length validation in the set() action.
A Linux kernel Open vSwitch vulnerability involving improper nested key length validation in the set() action.
A Linux kernel Open vSwitch vulnerability involving inadequate nested-key length validation in the set action.
An input-validation flaw in the Linux kernel Open vSwitch set() action involving nested key 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.