Description
The set_pixel_format function in ui/vnc.c in QEMU allows remote attackers to cause a denial of service (crash) via a small bytes_per_pixel value.
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 | 2.1+dfsg-7 | — |
| Debian 13 | qemu | 2.1+dfsg-7 | — |
| Debian 12 | qemu | 2.1+dfsg-7 | — |
| Debian 7 | qemu | 1.1.2+dfsg-6a+deb7u5 | DSA-3066-1 |
| Debian 7 | qemu-kvm | 1.1.2+dfsg-6+deb7u5 | DSA-3067-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | qemu | 2.0.0+dfsg-2ubuntu1.7 | USN-2409-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | qemu-img +6 | 10:1.5.3-86.el7 | RHSA-2015:0349 |
| RHEL 7 | qemu-img-rhev +6 | 10:2.1.2-23.el7 | RHSA-2015:0624 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | xen | 4.5.2_06-7.1 | SUSE-SU-2016:0873-1 |
| SLES 12 | qemu | 2.0.2-48.9.1 | SUSE-SU-2015:1782-1 |
| SLES 12 | xen | 4.4.4_02-22.19.1 | SUSE-SU-2016:1318-1 |
| SLES 11 SP4 | kvm | 1.4.2-47.1 | SUSE-SU-2016:2628-1 |
| SLES 11 SP4 | xen | 4.4.4_02-32.1 | SUSE-SU-2016:0955-1 |
| SLES 11 SP3 | xen | 4.2.5_20-24.9 | SUSE-SU-2016:1745-1 |
| SLES 11 SP2 | xen | 4.1.6_08-26.1 | SUSE-SU-2016:1154-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | xen | 4.5.2_06-7.1 | SUSE-SU-2016:0873-1 |
| SLES for SAP 12 | qemu | 2.0.2-48.9.1 | SUSE-SU-2015:1782-1 |
| SLES for SAP 12 | xen | 4.4.4_02-22.19.1 | SUSE-SU-2016:1318-1 |
| SLES for SAP 11 SP4 | kvm | 1.4.2-47.1 | SUSE-SU-2016:2628-1 |
| SLES for SAP 11 SP4 | xen | 4.4.4_02-32.1 | SUSE-SU-2016:0955-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | xen | 4.7.0_12-1.3 | openSUSE-SU-2024:10196-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | qemu-img +6 | 10:1.5.3-86.el7 | ELSA-2015-0349 |
Advisories 14
- RHSA-2015:0349 Red Hat Security Advisory: qemu-kvm security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2015:0624 Red Hat Security Advisory: qemu-kvm-rhev security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DSA-3066-1 qemu - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3067-1 qemu-kvm - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2409-1 qemu, qemu-kvm vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2016:1318-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1782-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:2628-1 Security update for kvm SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0955-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:1154-1 Security update for xen SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10196-1 xen-4.7.0_12-1.3 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2016:1745-1 Security update for xen SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2016:0873-1 Security update for xen SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2015-0349 Important: qemu-kvm security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 11, 2015
References
- 61484 third-party-advisory
- RHSA-2015:0624 vendor-advisory
- 62144 third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1157641
- SUSE-SU-2015:1782 vendor-advisory
- 62143 third-party-advisory
- RHSA-2015:0349 vendor-advisory
- DSA-3067 vendor-advisory
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=e6908bfe8e07f2b452e78e677da1b45b1c0f6829
- http://support.citrix.com/article/CTX200892
- USN-2409-1 vendor-advisory
- DSA-3066 vendor-advisory