Medium severity4.9NVD Advisory· Published Jan 2, 2024· Updated Jun 17, 2026
CVE-2023-6693
CVE-2023-6693
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
19cpe:/a:redhat:enterprise_linux:8::appstream+ 6 more
- cpe:/a:redhat:enterprise_linux:8::appstreamrange: 8100020240314161907.e155f54d
- cpe:/a:redhat:enterprise_linux:9::appstreamrange: 17:9.0.0-10.el9_5.3
- cpe:/o:redhat:enterprise_linux:6
- cpe:/o:redhat:enterprise_linux:7
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
- osv-coords8 versionspkg:rpm/opensuse/qemu&distro=openSUSE%20Tumbleweedpkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/opensuse/qemu&distro=openSUSE%20Leap%2015.5pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Micro%205.5pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP5pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP5pkg:rpm/suse/qemu&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Package%20Hub%2015%20SP5
< 8.2.1-1.1+ 7 more
- (no CPE)range: < 8.2.1-1.1
- (no CPE)range: < 3.1.1.1-75.1
- (no CPE)range: < 3.1.1.1-75.1
- (no CPE)range: < 7.1.0-150500.49.12.1
- (no CPE)range: < 7.1.0-150500.49.12.1
- (no CPE)range: < 7.1.0-150500.49.12.1
- (no CPE)range: < 7.1.0-150500.49.12.1
- (no CPE)range: < 7.1.0-150500.49.12.1
- cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
- cpe:/a:redhat:advanced_virtualization:8::el8
Patches
Vulnerability mechanics
References
7- bugzilla.redhat.com/show_bug.cginvdIssue TrackingPatch
- access.redhat.com/security/cve/CVE-2023-6693nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2024:2962nvd
- access.redhat.com/errata/RHSA-2025:4492nvd
- lists.debian.org/debian-lts-announce/2025/04/msg00042.htmlnvd
- lists.fedoraproject.org/archives/list/[email protected]/message/OYGUN5HVOXESW7MSNM44E4AE2VNXQB6Y/nvd
- security.netapp.com/advisory/ntap-20240208-0004/nvd
News mentions
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