RHSA-2016:0277 - Security Advisory
Critical: rhev-hypervisor security update
Security Advisory: Critical
Updated rhev-hypervisor packages that fix one security issue are now
Red Hat Product Security has rated this update as having Critical security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
The rhev-hypervisor package provides a Red Hat Enterprise Virtualization
Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor
is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes
everything necessary to run and manage virtual machines: A subset of the
Red Hat Enterprise Linux operating environment and the Red Hat Enterprise
Note: Red Hat Enterprise Virtualization Hypervisor is only available for
the Intel 64 and AMD64 architectures with virtualization extensions.
A stack-based buffer overflow was found in the way the libresolv library
performed dual A/AAAA DNS queries. A remote attacker could create a
specially crafted DNS response which could cause libresolv to crash or,
potentially, execute code with the permissions of the user running the
library. Note: this issue is only exposed when libresolv is called from the
nss_dns NSS service module. (CVE-2015-7547)
This issue was discovered by the Google Security Team and Red Hat.
Users of Red Hat Enterprise Virtualization Hypervisor are advised to
upgrade to these updated packages.
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
For details on how to apply this update, refer to:
- Red Hat Virtualization 7 x86_64
- Red Hat Virtualization 6 x86_64
- BZ - 1293532 - CVE-2015-7547 glibc: getaddrinfo stack-based buffer overflow
Red Hat Virtualization 7
Red Hat Virtualization 6