CVE-2015-8701

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-12-29 · updated 2026-06-17
Weakness: CWE-193

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

QEMU: through 2.5.1.1

References

http://www.openwall.com/lists/oss-security/2015/12/28/6
http://www.openwall.com/lists/oss-security/2015/12/29/1
http://www.securityfocus.com/bid/79706
https://bugzilla.redhat.com/show_bug.cgi?id=1286971
https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg04629.html
https://security.gentoo.org/glsa/201602-01
http://www.openwall.com/lists/oss-security/2015/12/28/6
http://www.openwall.com/lists/oss-security/2015/12/29/1
http://www.securityfocus.com/bid/79706
https://bugzilla.redhat.com/show_bug.cgi?id=1286971
https://lists.gnu.org/archive/html/qemu-devel/2015-12/msg04629.html
https://security.gentoo.org/glsa/201602-01

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