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high8.4

CVE-2025-39718

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: Validate length in packet header before skb_put() When receiving a vsock pack…

Impact

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: Validate length in packet header before skb_put() When receiving a vsock packet in the guest, only the virtqueue buffer size is validated prior to virtio_vsock_skb_rx_put(). Unfortunately, virtio_vsock_skb_rx_put() uses the length from the packet header as the length argument to skb_put(), potentially resulting in SKB overflow if the host has gone wonky. Validate the length as advertised by the packet header before calling virtio_vsock_skb_rx_put().

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 6.1.63 before 6.1.149
from 6.3 before 6.6.103
from 6.7 before 6.12.44
from 6.13 before 6.16.4
DebianDebian Linux
Version 11.0

Weakness classification

CWE-787

References