CVE-2019-13164
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.52%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.52% probability · 44th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Affected
- qemu/qemu · debian/debian linux · opensuse/leap · canonical/ubuntu linux
- Source
- cve@mitre.org
EPSS 0.5% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00000.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00008.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/07/02/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/07/02/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/07/02/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/07/02/2Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/109054Broken Link
- https://github.com/qemu/qemu/commit/03d7712b4bcd47bfe0fe14ba2fffa87e111fa086Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/09/msg00021.htmlMailing List, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg00145.htmlMailing List, Patch, Vendor Advisory
- https://seclists.org/bugtraq/2019/Aug/41Mailing List, Third Party Advisory
- https://seclists.org/bugtraq/2019/Sep/3Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202003-66Third Party Advisory
- https://usn.ubuntu.com/4191-1/Third Party Advisory
- https://usn.ubuntu.com/4191-2/Third Party Advisory
- https://www.debian.org/security/2019/dsa-4506Third Party Advisory
- https://www.debian.org/security/2019/dsa-4512Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00000.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00008.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/07/02/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/07/02/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/07/02/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2019/07/02/2Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/109054Broken Link
- https://github.com/qemu/qemu/commit/03d7712b4bcd47bfe0fe14ba2fffa87e111fa086Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/09/msg00021.htmlMailing List, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg00145.htmlMailing List, Patch, Vendor Advisory
- https://seclists.org/bugtraq/2019/Aug/41Mailing List, Third Party Advisory
- https://seclists.org/bugtraq/2019/Sep/3Mailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202003-66Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.