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 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().

The following products are affected by CVE-2025-39718 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-39718.

URL	Resource
https://git.kernel.org/stable/c/0dab92484474587b82e8e0455839eaf5ac7bf894
https://git.kernel.org/stable/c/676f03760ca1d69c2470cef36c44dc152494b47c
https://git.kernel.org/stable/c/969b06bd8b7560efb100a34227619e7d318fbe05
https://git.kernel.org/stable/c/ee438c492b2e0705d819ac0e25d04fae758d8f8f
https://git.kernel.org/stable/c/faf332a10372390ce65d0b803888f4b25a388335
https://lore.kernel.org/linux-cve-announce/2025090551-CVE-2025-39718-2e2c@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2025-39718
https://www.cve.org/CVERecord?id=CVE-2025-39718