This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page.
View CVE-2021-3593 →
DEBIAN-CVE-2021-3593
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp6_input() function and cou...
Original description
The description as published by the source.
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp6_input() function and could occur while processing a udp packet that is smaller than the size of the 'udphdr' structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.
Source: OSV.dev (Open Source Vulnerabilities) OSV
Affected packages
Debian:12
libslirp
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.6.1-1"}]}]
Debian:13
libslirp
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.6.1-1"}]}]
Debian:14
libslirp
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.6.1-1"}]}]
Debian:12
qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.1-2"}]}]
Debian:13
qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.1-2"}]}]
Debian:14
qemu
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:4.1-2"}]}]
References
- advisory security-tracker.debian.org