CVE-2026-53132
High
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)
SeverityHigh
CVSS7.1
Exploit probability3. percentile0.1%
Product
Linux Kernel
PublishedJun 25, 2026
First seenJun 25, 2026
Weakness typeCWE-400Uncontrolled resource consumption
How to fix
Update
- linux linux_kernel6.2, 6.12.94, 6.18.36, 7.0.13 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 6.1.63 ≤ v < 6.2, 6.3.1 ≤ v < 6.12.94, 6.13 ≤ v < 6.18.36, 6.19 ≤ v < 7.0.13, 6.3, 7.1 | 6.2, 6.12.94, 6.18.36, 7.0.13 |
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