CVE-2023-6693

MediumCVSS 5.3/10Last modified Jun 17, 2026

Description

A stack based buffer overflow was found in the virtio-net device of QEMU. This issue occurs when flushing TX in the virtio_net_flush_tx function if guest features VIRTIO_NET_F_HASH_REPORT, VIRTIO_F_VERSION_1 and VIRTIO_NET_F_MRG_RXBUF are enabled. This could allow a malicious user to overwrite local variables allocated on the stack. Specifically, the `out_sg` variable could be used to read a part of process memory and send it to the wire, causing an information leak.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Weakness enumeration

CWE-121CWE-787

Affected software

No affected versions have been published.

Timeline

Published
Jan 2, 2024
Last modified
Jun 17, 2026
NVD status
Modified

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