NULL pointer dereference in Qemu
CVE-2016-2391
The ohci_bus_start function in the USB OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) via vectors related to multiple eof_timers.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (31.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.3% 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
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10
- Debian Linux — versions 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/83263 (VDB Entry, Third Party Advisory, vdb-entry)
- git.qemu.org/
- www.openwall.com/lists/oss-security/2016/02/16/2 (mailing-list, Mailing List, Third Party Advisory)
- www.ubuntu.com/usn/USN-2974-1 (vendor-advisory, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- lists.debian.org/debian-lts-announce/2018/11/msg00038.html (mailing-list, Mailing List, Third Party Advisory)
- lists.gnu.org/archive/html/qemu-devel/2016-02/msg03374.html (mailing-list, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-2391?
- CVE-2016-2391 is a medium-severity vulnerability in Qemu, classified under NULL Pointer Dereference. CVSS score: 5.0/10. Published 2016-06-16.
- How severe is CVE-2016-2391?
- Medium severity. CVSS v3 base score is 5.0 out of 10.
- Is CVE-2016-2391 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.