CVE-2016-9104: Integer Overflow
Multiple integer overflows in the (1) v9fsxattrread and (2) v9fsxattrwrite 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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
alpine/qemuto a version that resolves this vulnerability.Fixed in 2.8.1-r1 - Upgrade
Upgrade
alpine/qemuto a version that resolves this vulnerability.Fixed in 2.8.1.1-r0
Event History
Frequently Asked Questions
What is the severity of CVE-2016-9104?
CVE-2016-9104 has a medium severity level as it allows local guest OS administrators to cause a denial of service.
How do I fix CVE-2016-9104?
To fix CVE-2016-9104, update QEMU to a version newer than 2.7.1 where the vulnerability is addressed.
What systems are affected by CVE-2016-9104?
CVE-2016-9104 affects QEMU versions up to 2.7.1, Debian 8.0, and openSUSE Leap 42.2.
What kind of attack does CVE-2016-9104 enable?
CVE-2016-9104 enables a denial of service attack by allowing a process crash through integer overflow.
Who can exploit CVE-2016-9104?
CVE-2016-9104 can be exploited by local guest OS administrators with the ability to craft specific offsets.