CVE-2019-13164

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-07-03 · updated 2026-06-17

Description

qemu-bridge-helper.c in QEMU 3.1 and 4.0.0 does not ensure that a network interface name (obtained from bridge.conf or a --br=bridge option) is limited to the IFNAMSIZ size, which can lead to an ACL bypass.

Affected products

Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 19.04, 19.10
Debian Linux: 8.0, 9.0, 10.0
openSUSE Leap: 15.0, 15.1
QEMU: 3.1, 4.0.0

References

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00008.html
http://www.openwall.com/lists/oss-security/2019/07/02/2
http://www.openwall.com/lists/oss-security/2019/07/02/2
http://www.openwall.com/lists/oss-security/2019/07/02/2
http://www.openwall.com/lists/oss-security/2019/07/02/2
http://www.securityfocus.com/bid/109054
https://github.com/qemu/qemu/commit/03d7712b4bcd47bfe0fe14ba2fffa87e111fa086
https://lists.debian.org/debian-lts-announce/2019/09/msg00021.html
https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg00145.html
https://seclists.org/bugtraq/2019/Aug/41
https://seclists.org/bugtraq/2019/Sep/3

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