Off-by-one Error Affecting qemu package, versions <1:2.5+dfsg-3
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Test your applications- Snyk ID SNYK-DEBIANUNSTABLE-QEMU-428431
- published 29 Dec 2016
- disclosed 29 Dec 2016
Introduced: 29 Dec 2016
CVE-2015-8701 Open this link in a new tabHow to fix?
Upgrade Debian:unstable
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:unstable
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.
References
- https://security-tracker.debian.org/tracker/CVE-2015-8701
- https://security.gentoo.org/glsa/201602-01
- https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg04629.html
- http://www.openwall.com/lists/oss-security/2015/12/28/6
- http://www.openwall.com/lists/oss-security/2015/12/29/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1286971
- http://www.securityfocus.com/bid/79706