Description
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp_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.
References (7)
Scores
CVSS v3
3.8
EPSS
0.0003
EPSS Percentile
7.9%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
Details
CWE
CWE-824
Status
published
Products (5)
debian/debian_linux
9.0
fedoraproject/fedora
33
fedoraproject/fedora
34
libslirp_project/libslirp
< 4.6.0
redhat/enterprise_linux
8.0 (2 CPE variants)
Published
Jun 15, 2021
Tracked Since
Feb 18, 2026