CVE-2015-8701

MEDIUM

QEMU < 2.5.1.1 - Off-by-one Error in Rocker Switch Emulation

Title source: llm

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.

References (6)

Core 6

Core References

Mailing List, Third Party Advisory mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2015/12/28/6

Patch, Vendor Advisory mailing-list x_refsource_mlist

https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg04629.html

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/79706

Mailing List, Third Party Advisory mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2015/12/29/1

Issue Tracking x_refsource_confirm

https://bugzilla.redhat.com/show_bug.cgi?id=1286971

Third Party Advisory vendor-advisory x_refsource_gentoo

https://security.gentoo.org/glsa/201602-01

Scores

CVSS v3 6.5

EPSS 0.0039

EPSS Percentile 30.6%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Details

CWE

CWE-193

Status published

Products (1)

qemu/qemu < 2.5.1.1

Published Dec 29, 2016

Tracked Since Feb 18, 2026