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Affected Component
Analysis
qemu
Patched
Name
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.
Published Date
Updated Date
Workaround
-
Advisories
https://access.redhat.com/security/cve/CVE-2023-6693Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2254580Issue Tracking
https://access.redhat.com/security/cve/CVE-2023-6693Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2254580Issue Tracking
Analysis#
Vulnerability Ratings#
4.9
CVSSv31
5.3
CVSSv31
NaN
other
Others affected components#
Resolved with patches#
qemu (yocto:kirkstone)
#
Title
Author
Resolve
1
virtio-net: correctly copy vnet header when flushing TX
Jason Wang <jasowang@redhat.com>
CVE-2023-6693