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.
Metrics
CVSS 3.1 6.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://www.openwall.com/lists/oss-security/2015/12/28/6Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2015/12/29/1Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/79706Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1286971Issue Tracking
- https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg04629.htmlPatch, Vendor Advisory
- https://security.gentoo.org/glsa/201602-01Third Party Advisory
- http://www.openwall.com/lists/oss-security/2015/12/28/6Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2015/12/29/1Mailing List, Third Party Advisory
- http://www.securityfocus.com/bid/79706Third Party Advisory, VDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=1286971Issue Tracking
- https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg04629.htmlPatch, Vendor Advisory
- https://security.gentoo.org/glsa/201602-01Third Party Advisory
Timeline
- Published
- Dec 29, 2016
- Last modified
- Jun 17, 2026
- NVD status
- Modified