NULL pointer dereference in Qemu
CVE-2015-7549
The MSI-X MMIO support in hw/pci/msix.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (NULL pointer dereference and QEMU process crash) by leveraging failure to define the .write method.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (30.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.8% 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)
Public proof-of-concept exploits
References
- www.openwall.com/lists/oss-security/2015/12/14/2 (mailing-list, Mailing List, Third Party Advisory, Issue Tracking)
- www.securityfocus.com/bid/80761 (VDB Entry, Third Party Advisory, vdb-entry)
- www.debian.org/security/2016/dsa-3471 (vendor-advisory, Third Party Advisory, Issue Tracking)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- git.qemu.org/
- security.gentoo.org/glsa/201602-01 (vendor-advisory, Third Party Advisory, Issue Tracking)
- lists.fedoraproject.org/pipermail/package-announce/2016-January/175380.html (vendor-advisory, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2015-7549?
- CVE-2015-7549 is a medium-severity vulnerability in Qemu, classified under NULL Pointer Dereference. CVSS score: 6.0/10. Published 2017-10-30.
- How severe is CVE-2015-7549?
- Medium severity. CVSS v3 base score is 6.0 out of 10.
- Is CVE-2015-7549 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.