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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
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 ↗