CVE-2016-9776

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-12-29 · updated 2026-06-17
Weakness: CWE-835

Description

QEMU (aka Quick Emulator) built with the ColdFire Fast Ethernet Controller emulator support is vulnerable to an infinite loop issue. It could occur while receiving packets in 'mcf_fec_receive'. A privileged user/process inside guest could use this issue to crash the QEMU process on the host leading to DoS.

Affected products

Debian Linux: 8.0
QEMU: through 2.7.1; 2.8.0-rc0, 2.8.0-rc1, 2.8.0-rc2

References

http://www.openwall.com/lists/oss-security/2016/12/02/3
http://www.openwall.com/lists/oss-security/2016/12/02/8
http://www.securityfocus.com/bid/94638
https://bugzilla.redhat.com/show_bug.cgi?id=1400829
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg05324.html
https://security.gentoo.org/glsa/201701-49
http://www.openwall.com/lists/oss-security/2016/12/02/3
http://www.openwall.com/lists/oss-security/2016/12/02/8
http://www.securityfocus.com/bid/94638
https://bugzilla.redhat.com/show_bug.cgi?id=1400829
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html

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