DEBIAN-CVE-2023-6693

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.

References

https://security-tracker.debian.org/tracker/CVE-2023-6693

Affected packages

Debian:12 / qemu

Package

Name: qemu
Purl: pkg:deb/debian/qemu?arch=source&distro=bookworm

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1:7.2+dfsg-7+deb12u4

Affected versions

1:7.*

1:7.2+dfsg-7

1:7.2+dfsg-7+deb12u1

1:7.2+dfsg-7+deb12u2~bpo11+1

1:7.2+dfsg-7+deb12u2

1:7.2+dfsg-7+deb12u3

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-6693.json"

Debian:13 / qemu

Package

Name: qemu
Purl: pkg:deb/debian/qemu?arch=source&distro=trixie

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1:8.2.0+ds-3

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-6693.json"

Debian:14 / qemu

Package

Name: qemu
Purl: pkg:deb/debian/qemu?arch=source&distro=forky

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1:8.2.0+ds-3

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2023-6693.json"