CVE-2026-53132 Details
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)
A vulnerability in the Linux kernel's virtio-vsock implementation can lead to an unbounded queue of packets. This issue arises in the 'virtio_transport_inc_rx_pkt' function, where the received packet length is not properly accounted for, allowing packets with a length of zero to be queued indefinitely. The problem is exacerbated by the 'virtio_transport_recv_enqueue' function, which skips coalescing for packets marked as the end of a message, leaving the byte count at zero and enabling the accumulation of a large number of packets.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been addressed. Instructions for downloading the patched version are available on the official Linux kernel website.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/059b7dbd20a6f0c539a45ddff1573cb8946685b5 | kernel.org | Patch |
| https://git.kernel.org/stable/c/100d5b2ffdc6468b9e48532641f29e83efdcb63c | kernel.org | Patch |
| https://git.kernel.org/stable/c/1eca304f97a34ed5e921e1f0e06c8b241f25bf12 | kernel.org | Patch |
| https://git.kernel.org/stable/c/9bdc637fde66b63d6cad0caacd034888bb7bf5f5 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-401 | Missing Release of Memory after Effective Lifetime | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 6.1.63, < 6.2 >= 6.3.1, < 6.12.94 >= 6.13, < 6.18.36 >= 6.19, < 7.0.13 6.3 - 6.3 rc3 6.3 rc4 6.3 rc5 6.3 rc6 6.3 rc7 7.1 rc1 7.1 rc2 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 6, 2026 | Initial Analysis | [email protected] |
| Jun 28, 2026 | CVE Modified | kernel.org |
| Jun 25, 2026 | New CVE Received | kernel.org |