CVE-2016-7908

Description

The mcf_fec_do_tx function in hw/net/mcf_fec.c in QEMU (aka Quick Emulator) does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags.

Category

4.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.13%
Vendor Advisory gentoo.org Vendor Advisory opensuse.org Vendor Advisory gnu.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2016/10/03/2 third party advisory mailing list
https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg05557.html mailing list patch vendor advisory
https://security.gentoo.org/glsa/201611-11 third party advisory vendor advisory
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=070c4b92b8cd5390889716677a0b92444d6e087a
http://lists.opensuse.org/opensuse-updates/2016-12/msg00140.html mailing list third party advisory vendor advisory
http://www.securityfocus.com/bid/93273 vdb entry third party advisory
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html third party advisory mailing list
http://www.openwall.com/lists/oss-security/2016/10/03/5 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2016-7908?
CVE-2016-7908 has been scored as a medium severity vulnerability.
How to fix CVE-2016-7908?
To fix CVE-2016-7908, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-7908 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-7908 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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