DEBIAN-CVE-2023-6693

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2023-6693
Downstream
DLA-4144-1
Published: 02 Jan 2024, 10:15
Last modified:28 Apr 2026, 20:27

Vulnerability Summary

Overall Risk (default)
low
21/100
CVSS Score
5.3 MEDIUM
3.1 (osv_debian)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

02 Jan 2024, 10:15
Published
Vulnerability first disclosed
28 Apr 2026, 20:27
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Affected Systems

  • debian•qemu

    < 1:5.2+dfsg-11+deb11u4 | < 1:7.2+dfsg-7+deb12u4 | < 1:8.2.0+ds-3 | < 1:8.2.0+ds-3

References (1)