Off-by-one Error Affecting qemu package, versions <1:2.5+dfsg-3


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.06% (29th percentile)

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  • Snyk IDSNYK-DEBIAN13-QEMU-5693713
  • published29 Dec 2016
  • disclosed29 Dec 2016

Introduced: 29 Dec 2016

CVE-2015-8701  (opens in a new tab)
CWE-193  (opens in a new tab)

How to fix?

Upgrade Debian:13 qemu to version 1:2.5+dfsg-3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qemu package and not the qemu package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

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.

CVSS Scores

version 3.1