CVE-2021-3592 | BDVDB-2026-155456 Detail
QEMU
Description#
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the bootp_input() function and could occur while processing a udp packet that is smaller than the size of the 'bootp_t' structure. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.
Impact#
No impact statement in the source data.
Weaknesses#
References#
- https://bugzilla.redhat.com/show_bug.cgi?id=1970484
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GCKWZWY64EHTOQMLVLTSZ4AA27EWRJMH/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SGPQZFVJCFGDSISFXPCQTTBBD7QZLJKI/
- https://security.gentoo.org/glsa/202107-44
- https://security.netapp.com/advisory/ntap-20210805-0004/
- https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html
- https://lists.debian.org/debian-lts-announce/2021/09/msg00004.html
- https://lists.debian.org/debian-lts-announce/2023/03/msg00013.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.