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CVE-2025-38109 is a use-after-free vulnerability in the Linux kernel net/mlx5 driver affecting shutdown handling for embedded-chip virtual functions (ECVFs) on NVIDIA BlueField devices. When an ECVF has been created, the vport ACL ingress table is not properly destroyed during the shutdown and SR-IOV teardown path. This can cause a reference-count underflow and use-after-free during mlx5 device unload. The flaw results from incorrectly conditioning ECVF-vport enablement and disablement on the ecpf_vport_exists capability, although ECVF functionality is independent of that capability.
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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.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability included in the AlmaLinux 9.6 security-check advisory.
A Linux kernel mlx5 driver use-after-free during shutdown when an embedded-chip virtual function (ECVF) is present on a BlueField device. The defect stems from failure to properly destroy the vport ACL ingress table during ECVF vport unload.
A Linux kernel net/mlx5 use-after-free vulnerability in ECVF vports unload that can lead to denial of service.
A Linux kernel use-after-free vulnerability in net/mlx5 during ECVF vports unload that can lead to denial of service.
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.