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CVE PROGRAM SOURCE RECORD7.1 High

CVE-2026-53132

vsock/virtio: fix potential unbounded skb queue

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Status
Published
Published
Updated
Assigning organization
Linux

Description

In the Linux kernel, the following vulnerability has been resolved: vsock/virtio: fix potential unbounded skb queue virtio_transport_inc_rx_pkt() checks vvs->rx_bytes + len > vvs->buf_alloc. virtio_transport_recv_enqueue() skips coalescing for packets with VIRTIO_VSOCK_SEQ_EOM. If fed with packets with len == 0 and VIRTIO_VSOCK_SEQ_EOM, a very large number of packets can be queued because vvs->rx_bytes stays at 0. Fix this by estimating the skb metadata size: (Number of skbs in the queue) * SKB_TRUESIZE(0)

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 077706165717686a2a6a71405fef036cd5b37ae0 to < 1eca304f97a34ed5e921e1f0e06c8b241f25bf12affected
  • 077706165717686a2a6a71405fef036cd5b37ae0 to < 9bdc637fde66b63d6cad0caacd034888bb7bf5f5affected
  • 077706165717686a2a6a71405fef036cd5b37ae0 to < 100d5b2ffdc6468b9e48532641f29e83efdcb63caffected
  • 077706165717686a2a6a71405fef036cd5b37ae0 to < 059b7dbd20a6f0c539a45ddff1573cb8946685b5affected
  • 5852a2b573f7a3a29df46296e56aa3491e589cdfaffected
  • 6.1.63 to < 6.2affected

Linux Linux

Default version status: affected

  • 6.3affected
  • 0 to < 6.3unaffected
  • 6.12.94 to ≤ 6.12.*unaffected
  • 6.18.36 to ≤ 6.18.*unaffected
  • 7.0.13 to ≤ 7.0.*unaffected
  • 7.1 to ≤ *unaffected

References