CVE-2015-8701

QEMU (aka Quick Emulator) built with the Rocker switch emulation support is vulnerable to an off...

6.5 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.39%Down 0.6 points since Feb 4, 2022

What each source reports

NVD Score used 6.5

Record: CVE-2015-8701
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CVSS 2.0: 2.1 LowAV:L/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-193
Updated: 2026-11-02

CVE List No score

Record: CVE-2015-8701
Updated: 2026-11-02

EUVDEUVD-2015-8578 No score

Record: EUVD-2015-8578
Updated: 2026-11-03

GitHub AdvisoriesGHSA-2h29-rjh5-xxch 6.5

QEMU (aka Quick Emulator) built with the Rocker switch emulation support is vulnerable to an off...

Record: GHSA-2h29-rjh5-xxch
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Weakness: CWE-193
Updated: 2026-11-02

OSV 6.5

Record: CVE-2015-8701
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2015-8701 6.5

Record: DEBIAN-CVE-2015-8701
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

qemu

Affected packages

Affected packages
Package	Affected	Fixed
`qemu` Debian:12	before 1:2.5+dfsg-3	1:2.5+dfsg-3
`qemu` Debian:13	before 1:2.5+dfsg-3	1:2.5+dfsg-3
`qemu` Debian:14	before 1:2.5+dfsg-3	1:2.5+dfsg-3

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2015-8701 is a medium vulnerability (CVSS 6.5) in Qemu, published December 29, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.39%, the 33rd percentile. Fixed in qemu 1:2.5+dfsg-3.