CVE-2025-39718

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinuxbaddcc2c71572968cdaeee1c4ab3dc0ad90fa765 < 969b06bd8b7560efb100a34227619e7d318fbe05affected
LinuxLinux71dc9ec9ac7d3eee785cdc986c3daeb821381e20 < ee438c492b2e0705d819ac0e25d04fae758d8f8faffected
LinuxLinux71dc9ec9ac7d3eee785cdc986c3daeb821381e20 < faf332a10372390ce65d0b803888f4b25a388335affected
LinuxLinux71dc9ec9ac7d3eee785cdc986c3daeb821381e20 < 676f03760ca1d69c2470cef36c44dc152494b47caffected
LinuxLinux71dc9ec9ac7d3eee785cdc986c3daeb821381e20 < 0dab92484474587b82e8e0455839eaf5ac7bf894affected
LinuxLinux6.1.63 < 6.1.149affected
LinuxLinux6.3affected
LinuxLinux0 < 6.3unaffected
LinuxLinux6.1.149 <= 6.1.*unaffected
LinuxLinux6.6.103 <= 6.6.*unaffected
LinuxLinux6.12.44 <= 6.12.*unaffected
LinuxLinux6.16.4 <= 6.16.*unaffected
LinuxLinux6.17 <= *unaffected

Weaknesses

ADP Enrichment

CVE Program Container

Additional References

Additional References

References