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.
Metrics
CVSS 3.1 5.3/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:LWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 | — |
| Red Hat | Red Hat Enterprise Linux 8 | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
| Red Hat | Red Hat Enterprise Linux 6 | — |
| Red Hat | Red Hat Enterprise Linux 7 | — |
| Red Hat | Red Hat Enterprise Linux 7 | — |
| Red Hat | Red Hat Enterprise Linux 8 Advanced Virtualization | — |
References
- https://access.redhat.com/errata/RHSA-2024:2962
- https://access.redhat.com/errata/RHSA-2025:4492
- https://access.redhat.com/security/cve/CVE-2023-6693Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2254580Issue Tracking, Patch
- https://access.redhat.com/errata/RHSA-2024:2962
- https://access.redhat.com/security/cve/CVE-2023-6693Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2254580Issue Tracking, Patch
- https://lists.debian.org/debian-lts-announce/2025/04/msg00042.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OYGUN5HVOXESW7MSNM44E4AE2VNXQB6Y/
- https://security.netapp.com/advisory/ntap-20240208-0004/
Timeline
- Published
- Jan 2, 2024
- Last modified
- Nov 5, 2026
- NVD status
- Modified