VULNERABILITY

Debian: CVE-2023-6693: qemu -- security update

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Debian: CVE-2023-6693: qemu -- security update

Severity
4
CVSS
(AV:L/AC:L/Au:S/C:P/I:P/A:P)
Published
01/02/2024
Created
07/31/2024
Added
07/30/2024
Modified
01/28/2025

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.

Solution(s)

  • debian-upgrade-qemu

References

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