CVE-2026-53132

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)

CVSS 3.1

7.1CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 3% of CVEs (scores of 2026-10-25)

CWEs

CWE-401, CWE-400

Published

2026-06-25

Modified

2026-10-19

Record from

the NVD, synced 2026-10-21

Affected

• linux:linux_kernel

References

• https://git.kernel.org/stable/c/059b7dbd20a6f0c539a45ddff1573cb8946685b5
• https://git.kernel.org/stable/c/100d5b2ffdc6468b9e48532641f29e83efdcb63c
• https://git.kernel.org/stable/c/1eca304f97a34ed5e921e1f0e06c8b241f25bf12
• https://git.kernel.org/stable/c/9bdc637fde66b63d6cad0caacd034888bb7bf5f5

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