Buffer overflow in Qemu
CVE-2016-9846
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (33.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 33.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Qemu — versions 2.8.0
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2016/12/05/23 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/12/05/18 (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201701-49 (vendor-advisory, Third Party Advisory)
- lists.gnu.org/archive/html/qemu-devel/2016-11/msg00029.html (Vendor Advisory, mailing-list, Patch)
- www.securityfocus.com/bid/94765 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2016-9846?
- CVE-2016-9846 is a medium-severity vulnerability in Qemu, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.5/10. Published 2016-12-29.
- How severe is CVE-2016-9846?
- Medium severity. CVSS v3 base score is 6.5 out of 10.