First published: Fri Nov 04 2016(Updated: )
The v9fs_iov_vunmarshal function in fsdev/9p-iov-marshal.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (NULL pointer dereference and QEMU process crash) by sending an empty string parameter to a 9P operation.
Credit: secalert@redhat.com
Affected Software | Affected Version | How to fix |
---|---|---|
QEMU KVM | <=2.7.1 | |
openSUSE | =42.2 | |
Debian Debian Linux | =8.0 |
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CVE-2016-8578 has a medium severity rating due to its ability to cause denial of service through a NULL pointer dereference.
To fix CVE-2016-8578, upgrade QEMU to version 2.7.2 or later where the vulnerability has been addressed.
CVE-2016-8578 affects QEMU versions up to and including 2.7.1, as well as specific Linux distributions such as openSUSE Leap 42.2 and Debian 8.0.
CVE-2016-8578 can be exploited by local guest OS administrators who can send malicious parameters to the 9P operation.
The impact of CVE-2016-8578 is a denial of service which results in the QEMU process crashing.