m_cat in slirp/mbuf.c in Qemu has a heap-based buffer overflow via incoming fragmented datagrams.
https://www.zerodayinitiative.com/advisories/ZDI-18-567/
https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg01012.html
https://bugzilla.redhat.com/show_bug.cgi?id=1586245
http://www.securityfocus.com/bid/104400
http://www.openwall.com/lists/oss-security/2018/06/07/1
https://access.redhat.com/errata/RHSA-2018:2462
https://access.redhat.com/errata/RHSA-2018:2762
https://access.redhat.com/errata/RHSA-2018:2822
https://access.redhat.com/errata/RHSA-2018:2887
https://usn.ubuntu.com/3826-1/
https://lists.debian.org/debian-lts-announce/2019/05/msg00010.html
https://www.debian.org/security/2019/dsa-4454
Source: MITRE
Published: 2018-06-13
Updated: 2021-08-04
Type: CWE-787
Base Score: 7.2
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 3.9
Severity: HIGH
Base Score: 8.2
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Impact Score: 6
Exploitability Score: 1.5
Severity: HIGH