CVE-2016-9846

Severity: medium (CVSS 6.5 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-119

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.

Affected products

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/2016/12/05/18
http://www.openwall.com/lists/oss-security/2016/12/05/23
http://www.securityfocus.com/bid/94765
https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg00029.html
https://security.gentoo.org/glsa/201701-49
http://www.openwall.com/lists/oss-security/2016/12/05/18
http://www.openwall.com/lists/oss-security/2016/12/05/23
http://www.securityfocus.com/bid/94765
https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg00029.html
https://security.gentoo.org/glsa/201701-49

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