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CVE-2026-53132

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
25/06/2026
Last modified:
06/07/2026

Description

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

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.10 HIGH
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x
7.10
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.1.63 (including) 6.2 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.3.1 (including) 6.12.94 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.13 (including) 6.18.36 (excluding)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 6.19 (including) 7.0.13 (excluding)
cpe:2.3:o:linux:linux_kernel:6.3:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.3:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.3:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.3:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.3:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.3:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools