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Synopsis:          Important: kernel security and bug fix update
Advisory ID:       SLSA-2018:1965-1
Issue Date:        2018-06-26
CVE Numbers:       CVE-2018-3639
                   CVE-2017-11600
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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, PowerPC,
x86 AMD)

* kernel: Out-of-bounds access via an XFRM_MSG_MIGRATE xfrm Netlink
message (CVE-2017-11600)

Bug Fix(es):

See the descriptions in the related Knowledge Article:
--

SL7
  x86_64
    kernel-3.10.0-862.6.3.el7.x86_64.rpm
    kernel-debug-3.10.0-862.6.3.el7.x86_64.rpm
    kernel-debug-debuginfo-3.10.0-862.6.3.el7.x86_64.rpm
    kernel-debug-devel-3.10.0-862.6.3.el7.x86_64.rpm
    kernel-debuginfo-3.10.0-862.6.3.el7.x86_64.rpm
    kernel-debuginfo-common-x86_64-3.10.0-862.6.3.el7.x86_64.rpm
    kernel-devel-3.10.0-862.6.3.el7.x86_64.rpm
    kernel-headers-3.10.0-862.6.3.el7.x86_64.rpm
    kernel-tools-3.10.0-862.6.3.el7.x86_64.rpm
    kernel-tools-debuginfo-3.10.0-862.6.3.el7.x86_64.rpm
    kernel-tools-libs-3.10.0-862.6.3.el7.x86_64.rpm
    perf-3.10.0-862.6.3.el7.x86_64.rpm
    perf-debuginfo-3.10.0-862.6.3.el7.x86_64.rpm
    python-perf-3.10.0-862.6.3.el7.x86_64.rpm
    python-perf-debuginfo-3.10.0-862.6.3.el7.x86_64.rpm
    kernel-tools-libs-devel-3.10.0-862.6.3.el7.x86_64.rpm
  noarch
    kernel-abi-whitelists-3.10.0-862.6.3.el7.noarch.rpm
    kernel-doc-3.10.0-862.6.3.el7.noarch.rpm

- Scientific Linux Development Team