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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | qemu | 1:2.8+dfsg-1 | — |
| Debian 13 | qemu | 1:2.8+dfsg-1 | — |
| Debian 12 | qemu | 1:2.8+dfsg-1 | — |
| Debian 8 | qemu | 1:2.1+dfsg-12+deb8u7 | DLA-1497-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | qemu | 1:2.5+dfsg-5ubuntu10.11 | USN-3261-1 |
| Ubuntu 14.04 LTS | qemu | 2.0.0+dfsg-2ubuntu1.33 | USN-3261-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | qemu | 2.6.2-39.1 | SUSE-SU-2017:0127-1 |
| SLES 12 SP1 | qemu | 2.3.1-32.11 | SUSE-SU-2017:1241-1 |
| SLES 12 SP1 | xen | 4.5.5_06-22.11.2 | SUSE-SU-2017:0570-1 |
| SLES 12 | qemu | 2.0.2-48.31.1 | SUSE-SU-2017:0661-1 |
| SLES 12 | xen | 4.4.4_14-22.33.1 | SUSE-SU-2017:0582-1 |
| SLES 11 SP4 | kvm | 1.4.2-59.1 | SUSE-SU-2017:1135-1 |
| SLES 11 SP4 | xen | 4.4.4_14-51.1 | SUSE-SU-2017:0647-1 |
| SLES 11 SP3 | kvm | 1.4.2-53.11.1 | SUSE-SU-2017:3084-1 |
| SLES 11 SP3 | xen | 4.2.5_21-35.1 | SUSE-SU-2017:0718-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP2 | qemu | 2.6.2-39.1 | SUSE-SU-2017:0127-1 |
| SLES for SAP 12 SP1 | qemu | 2.3.1-32.11 | SUSE-SU-2017:1241-1 |
| SLES for SAP 12 SP1 | xen | 4.5.5_06-22.11.2 | SUSE-SU-2017:0570-1 |
| SLES for SAP 12 | qemu | 2.0.2-48.31.1 | SUSE-SU-2017:0661-1 |
| SLES for SAP 12 | xen | 4.4.4_14-22.33.1 | SUSE-SU-2017:0582-1 |
| SLES for SAP 11 SP4 | kvm | 1.4.2-59.1 | SUSE-SU-2017:1135-1 |
| SLES for SAP 11 SP4 | xen | 4.4.4_14-51.1 | SUSE-SU-2017:0647-1 |
| SUSE OpenStack Cloud 5 | xen | 4.2.5_21-35.1 | SUSE-SU-2017:0718-1 |
| SUSE Manager Proxy 2.1 | xen | 4.2.5_21-35.1 | SUSE-SU-2017:0718-1 |
| SUSE Manager 2.1 | xen | 4.2.5_21-35.1 | SUSE-SU-2017:0718-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | kvm | 1.4.2-53.11.1 | SUSE-SU-2017:3084-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | xen | 4.2.5_21-35.1 | SUSE-SU-2017:0718-1 |
Advisories 11
- DLA-1497-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3261-1 qemu vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2017:0661-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0127-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0582-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0570-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0647-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0718-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1241-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:3084-1 Security update for kvm SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1135-1 Security update for kvm SUSE / openSUSE Security Updates · Feb 4, 2026
References
- [debian-lts-announce] 20180906 [SECURITY] [DLA 1497-1] qemu security update mailing-list
- GLSA-201701-49 vendor-advisory
- [oss-security] 20161202 CVE request Qemu: net: mcf_fec: infinite loop while receiving data in mcf_fec_receive mailing-list
- [oss-security] 20161202 Re: CVE request Qemu: net: mcf_fec: infinite loop while receiving data in mcf_fec_receive mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=1400829
- 94638 vdb-entry
- [qemu-devel] 20161130 [PATCH] net: mcf: check receive buffer size register value mailing-list