Unrated severityNVD Advisory· Published Dec 4, 2025· Updated Apr 15, 2026
CVE-2025-40236
CVE-2025-40236
Description
In the Linux kernel, the following vulnerability has been resolved:
virtio-net: zero unused hash fields
When GSO tunnel is negotiated virtio_net_hdr_tnl_from_skb() tries to initialize the tunnel metadata but forget to zero unused rxhash fields. This may leak information to another side. Fixing this by zeroing the unused hash fields.
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Affected products
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