CVE-2023-6693
Published: Jan 2, 2024
Modified: Feb 25, 2026
CVSS v3.1
4.9
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.
| Vendor | Product | Versions |
|---|---|---|
Red Hat | Red Hat Enterprise Linux 8 | unaffected 8100020240314161907.e155f54d - < * |
Red Hat | Red Hat Enterprise Linux 8 | unaffected 8100020240314161907.e155f54d - < * |
Red Hat | Red Hat Enterprise Linux 9 | unaffected 17:9.0.0-10.el9_5.3 - < * |
Red Hat | Red Hat Enterprise Linux 6 | All versions |
Red Hat | Red Hat Enterprise Linux 7 | All versions |
Red Hat | Red Hat Enterprise Linux 7 | All versions |
Red Hat | Red Hat Enterprise Linux 8 Advanced Virtualization | All versions |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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