NULL pointer dereference in Qemu
CVE-2016-2197
QEMU (aka Quick Emulator) built with an IDE AHCI emulation support is vulnerable to a null pointer dereference flaw. It occurs while unmapping the Frame Information Structure (FIS) and Command List Block (CLB) entries. A privileged user inside guest could use this flaw to crash the QEMU process instance resulting in DoS.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (34.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.0% 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
Weakness classification (CWE)
References
- www.securityfocus.com/bid/82235 (VDB Entry, Third Party Advisory, vdb-entry)
- www.openwall.com/lists/oss-security/2016/01/29/2 (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201604-01 (vendor-advisory, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/01/30/1 (mailing-list, Mailing List, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking)
- lists.gnu.org/archive/html/qemu-devel/2016-01/msg05742.html (Vendor Advisory, mailing-list, Patch)
Frequently asked questions
- What is CVE-2016-2197?
- CVE-2016-2197 is a medium-severity vulnerability in Qemu, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2016-12-29.
- How severe is CVE-2016-2197?
- Medium severity. CVSS v3 base score is 5.5 out of 10.