Description
QEMU (aka Quick Emulator) built with the Virtio GPU Device emulator support is vulnerable to a memory leakage issue. It could occur while updating the cursor data in update_cursor_data_virgl. A guest user/process could use this flaw to leak host memory bytes, resulting in DoS for a host.
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 | — |
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 |
Show 1 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 |
Advisories 2
- USN-3261-1 qemu vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2017:0127-1 Security update for qemu SUSE / openSUSE Security Updates · Feb 4, 2026
References
- [oss-security] 20161205 Re: CVE request Qemu: display: virtio-gpu: memory leakage while updating cursor mailing-list
- [oss-security] 20161205 CVE request Qemu: display: virtio-gpu: memory leakage while updating cursor mailing-list
- GLSA-201701-49 vendor-advisory
- [qemu-devel] 20161101 [PATCH] virtio-gpu: fix memory leak in update_cursor_data_virgl mailing-list
- 94765 vdb-entry