CVE-2016-2858

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: 2016-04-07 · updated 2026-06-17
Weakness: CWE-331

Description

QEMU, when built with the Pseudo Random Number Generator (PRNG) back-end support, allows local guest OS users to cause a denial of service (process crash) via an entropy request, which triggers arbitrary stack based allocation and memory corruption.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 15.10, 16.04
Debian Linux: 8.0
QEMU: through 2.5.1.1

References

http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=60253ed1e6ec6d8e5ef2efe7bf755f475dce9956
http://www.openwall.com/lists/oss-security/2016/03/04/1
http://www.openwall.com/lists/oss-security/2016/03/07/4
http://www.securityfocus.com/bid/84134
http://www.ubuntu.com/usn/USN-2974-1
https://bugzilla.redhat.com/show_bug.cgi?id=1314676
https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
https://security.gentoo.org/glsa/201604-01
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=60253ed1e6ec6d8e5ef2efe7bf755f475dce9956
http://www.openwall.com/lists/oss-security/2016/03/04/1
http://www.openwall.com/lists/oss-security/2016/03/07/4
http://www.securityfocus.com/bid/84134

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