Synopsis: Important: kernel security update
Advisory ID: SLSA-2018:1629-1
Issue Date: 2018-05-22
CVE Numbers: CVE-2018-3639
--
Security Fix(es):
* An industry-wide issue was found in the way many modern microprocessor
designs have implemented speculative execution of Load & Store
instructions (a commonly used performance optimization). It relies on the
presence of a precisely-defined instruction sequence in the privileged
code as well as the fact that memory read from address to which a recent
memory write has occurred may see an older value and subsequently cause an
update into the microprocessor's data cache even for speculatively
executed instructions that never actually commit (retire). As a result, an
unprivileged attacker could use this flaw to read privileged memory by
conducting targeted cache side-channel attacks. (CVE-2018-3639)
Note: This issue is present in hardware and cannot be fully fixed via
software update. The updated kernel packages provide software side of the
mitigation for this hardware issue. To be fully functional, up-to-date CPU
microcode applied on the system is required. Please refer to References
section for further information about this issue, CPU microcode
requirements and the potential performance impact.
In this update mitigations for x86-64 architecture are provided.
--
SL7
x86_64
kernel-3.10.0-862.3.2.el7.x86_64.rpm
kernel-debug-3.10.0-862.3.2.el7.x86_64.rpm
kernel-debug-debuginfo-3.10.0-862.3.2.el7.x86_64.rpm
kernel-debug-devel-3.10.0-862.3.2.el7.x86_64.rpm
kernel-debuginfo-3.10.0-862.3.2.el7.x86_64.rpm
kernel-debuginfo-common-x86_64-3.10.0-862.3.2.el7.x86_64.rpm
kernel-devel-3.10.0-862.3.2.el7.x86_64.rpm
kernel-headers-3.10.0-862.3.2.el7.x86_64.rpm
kernel-tools-3.10.0-862.3.2.el7.x86_64.rpm
kernel-tools-debuginfo-3.10.0-862.3.2.el7.x86_64.rpm
kernel-tools-libs-3.10.0-862.3.2.el7.x86_64.rpm
perf-3.10.0-862.3.2.el7.x86_64.rpm
perf-debuginfo-3.10.0-862.3.2.el7.x86_64.rpm
python-perf-3.10.0-862.3.2.el7.x86_64.rpm
python-perf-debuginfo-3.10.0-862.3.2.el7.x86_64.rpm
kernel-tools-libs-devel-3.10.0-862.3.2.el7.x86_64.rpm
noarch
kernel-abi-whitelists-3.10.0-862.3.2.el7.noarch.rpm
kernel-doc-3.10.0-862.3.2.el7.noarch.rpm
- Scientific Linux Development Team
