Description
In libslirp 4.1.0, as used in QEMU 4.2.0, tcp_subr.c misuses snprintf return values, leading to a buffer overflow in later code.
References (12)
Core 12
Core References
Patch, Third Party Advisory x_refsource_misc
https://gitlab.freedesktop.org/slirp/libslirp/commit/68ccb8021a838066f0951d4b2817eb6b6f10a843
Mailing List, Patch, Third Party Advisory x_refsource_misc
https://www.openwall.com/lists/oss-security/2020/02/06/2
Release Notes, Third Party Advisory x_refsource_misc
https://gitlab.freedesktop.org/slirp/libslirp/-/tags/v4.1.0
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4283-1/
Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/03/msg00015.html
Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/03/msg00017.html
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202003-66
Mailing List, Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2020/dsa-4733
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20201001-0002/
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/02/msg00012.html
Scores
CVSS v3
5.6
EPSS
0.0150
EPSS Percentile
81.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Details
CWE
CWE-120
Status
published
Products (5)
debian/debian_linux
8.0
debian/debian_linux
9.0
debian/debian_linux
10.0
libslirp_project/libslirp
4.1.0
opensuse/leap
15.1
Published
Feb 06, 2020
Tracked Since
Feb 18, 2026