4.9
Medium
CVE-2023-6693 Qemu: virtio-net: stack buffer overflow in virtio_net_flush_tx()
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 3.1 detail
Vector CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:LExploitable with local access to the machine, without an account and without any user action; the impact on data or service is limited.
- Attack vector
- Local
- Attack complexity
- High
- Privileges required
- None
- Interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 8 8100020240314161907 | earliest → < 8100020240314161907.e155f54d | 8100020240314161907.e155f54d |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat Enterprise Linux 6 | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| Red Hat Enterprise Linux 8 Advanced Virtualization | Versions not published |
References
- RHSA-2024:2962 access.redhat.com
- RHSA-2025:4492 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2254580 bugzilla.redhat.com
Timeline
- Published
- Last modified
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