CVE-2015-8701

Description

QEMU (aka Quick Emulator) built with the Rocker switch emulation support is vulnerable to an off-by-one error. It happens while processing transmit (tx) descriptors in 'tx_consume' routine, if a descriptor was to have more than allowed (ROCKER_TX_FRAGS_MAX=16) fragments. A privileged user inside guest could use this flaw to cause memory leakage on the host or crash the QEMU process instance resulting in DoS issue.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.07%
Vendor Advisory gentoo.org Vendor Advisory gnu.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2015/12/28/6 third party advisory mailing list
https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg04629.html mailing list patch vendor advisory
http://www.securityfocus.com/bid/79706 vdb entry third party advisory
http://www.openwall.com/lists/oss-security/2015/12/29/1 third party advisory mailing list
https://bugzilla.redhat.com/show_bug.cgi?id=1286971 issue tracking
https://security.gentoo.org/glsa/201602-01 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-8701?
CVE-2015-8701 has been scored as a medium severity vulnerability.
How to fix CVE-2015-8701?
To fix CVE-2015-8701, 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-2015-8701 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2015-8701 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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