Red Hat: 2015:1675-01: libunwind: Low Advisory
Summary
Libunwind provides a C ABI to determine the call-chain of a program.
An off by one array indexing error was found in libunwind. It is unlikely
that any exploitable attack vector exists in current builds or supported
usage. (CVE-2015-3239)
This issue was discovered by Paolo Bonzini of Red Hat.
All users of libunwind are advised to upgrade to these updated packages,
which correct this issue.
Summary
Solution
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:
https://access.redhat.com/articles/11258
References
https://access.redhat.com/security/cve/CVE-2015-3239 https://access.redhat.com/security/updates/classification/#low
Package List
Red Hat Enterprise Linux OpenStack Platform 6.0 for RHEL 7:
Source:
libunwind-1.1-4.1.el7ost.src.rpm
x86_64:
libunwind-1.1-4.1.el7ost.x86_64.rpm
libunwind-debuginfo-1.1-4.1.el7ost.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
Updated libunwind packages that fix a security flaw are now available forRed Hat Enterprise Linux OpenStack Platform 6.0.Red Hat Product Security has rated this update as having Low securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux OpenStack Platform 6.0 for RHEL 7 - x86_64
Bugs Fixed
1232265 - CVE-2015-3239 libunwind: off-by-one in dwarf_to_unw_regnum()