Integer overflow in Qemu
CVE-2016-9104
Multiple integer overflows in the (1) v9fs_xattr_read and (2) v9fs_xattr_write functions in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allow local guest OS administrators to cause a denial of service (QEMU process crash) via a crafted offset, which triggers an out-of-bounds access.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (31.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.2% 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
- Debian Linux — versions 8.0
- openSUSE Leap — versions 42.2
Weakness classification (CWE)
References
- www.securityfocus.com/bid/93956 (VDB Entry, Third Party Advisory, vdb-entry)
- security.gentoo.org/glsa/201611-11 (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-updates/2016-12/msg00140.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/10/30/8 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/10/28/2 (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/11/msg00038.html (mailing-list, Mailing List, Third Party Advisory)
- lists.gnu.org/archive/html/qemu-devel/2016-10/msg02942.html (mailing-list, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-9104?
- CVE-2016-9104 is a medium-severity vulnerability in Qemu, classified under Integer Overflow or Wraparound. CVSS score: 4.4/10. Published 2016-12-09.
- How severe is CVE-2016-9104?
- Medium severity. CVSS v3 base score is 4.4 out of 10.