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().
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= baddcc2c71572968cdaeee1c4ab3dc0ad90fa765, < 969b06bd8b7560efb100a34227619e7d318fbe05; >= 71dc9ec9ac7d3eee785cdc986c3daeb821381e20, < ee438c492b2e0705d819ac0e25d04fae758d8f8f; >= 71dc9ec9ac7d3eee785cdc986c3daeb821381e20, < faf332a10372390ce65d0b803888f4b25a388335; >= 71dc9ec9ac7d3eee785cdc986c3daeb821381e20, < 676f03760ca1d69c2470cef36c44dc152494b47c; >= 71dc9ec9ac7d3eee785cdc986c3daeb821381e20, < 0dab92484474587b82e8e0455839eaf5ac7bf894; >= 6.1.63, < 6.1.149 |
| Linux | Linux | 6.3 |
| Siemens | SIMATIC CN 4100 | < V5.0 |
References
- https://git.kernel.org/stable/c/0dab92484474587b82e8e0455839eaf5ac7bf894Patch
- https://git.kernel.org/stable/c/676f03760ca1d69c2470cef36c44dc152494b47cPatch
- https://git.kernel.org/stable/c/969b06bd8b7560efb100a34227619e7d318fbe05Patch
- https://git.kernel.org/stable/c/ee438c492b2e0705d819ac0e25d04fae758d8f8fPatch
- https://git.kernel.org/stable/c/faf332a10372390ce65d0b803888f4b25a388335Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
Timeline
- Published
- Sep 5, 2025
- Last modified
- Oct 19, 2026
- NVD status
- Modified