CVE-2025-39718 - vsock/virtio: Validate length in packet header before skb_put()

CVE-2025-39718 - vsock/virtio: Validate length in packet header before skb_put()

https://cvefeed.io/rssfeed/latest.atom / Fri, 09/05/2025 - 20:38
CVE ID : CVE-2025-39718
Published : Sept. 5, 2025, 5:21 p.m. | 52 minutes ago
Description : 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().
Severity: 0.0 | NA
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