QEMU (aka Quick Emulator) built with the Rocker switch emulation...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- http://www.openwall.com/lists/oss-security/2015/12/28/6
- https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg04629.html
- http://www.securityfocus.com/bid/79706
- http://www.openwall.com/lists/oss-security/2015/12/29/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1286971
- https://security.gentoo.org/glsa/201602-01
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CVSS Vectors
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.