Vulnerability Monitor

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CVE-2023-6693

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.

Published

2024-01-02T10:15:08.930

Last Modified

2025-05-06T09:15:16.097

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.9 (MEDIUM)

Weaknesses
  • Type: Secondary
    CWE-121
  • Type: Primary
    CWE-787
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application qemu qemu < 8.2.1 Yes
Operating System redhat enterprise_linux 8.0 Yes
Operating System redhat enterprise_linux 8.0 Yes
Operating System redhat enterprise_linux 9.0 Yes
Operating System fedoraproject fedora 39 Yes
References