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Red Hat Product Errata RHSA-2019:1172 - Security Advisory
Issued:
2019-05-14
Updated:
2019-05-14

RHSA-2019:1172 - Security Advisory

  • Overview
  • Updated Packages

Synopsis

Important: kernel security and bug fix update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for kernel is now available for Red Hat Enterprise Linux 7.2 Advanced Update Support, Red Hat Enterprise Linux 7.2 Telco Extended Update Support, and Red Hat Enterprise Linux 7.2 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

  • A flaw was found in the implementation of the "fill buffer", a mechanism used by modern CPUs when a cache-miss is made on L1 CPU cache. If an attacker can generate a load operation that would create a page fault, the execution will continue speculatively with incorrect data from the fill buffer while the data is fetched from higher level caches. This response time can be measured to infer data in the fill buffer. (CVE-2018-12130)
  • Modern Intel microprocessors implement hardware-level micro-optimizations to improve the performance of writing data back to CPU caches. The write operation is split into STA (STore Address) and STD (STore Data) sub-operations. These sub-operations allow the processor to hand-off address generation logic into these sub-operations for optimized writes. Both of these sub-operations write to a shared distributed processor structure called the 'processor store buffer'. As a result, an unprivileged attacker could use this flaw to read private data resident within the CPU's processor store buffer. (CVE-2018-12126)
  • Microprocessors use a ‘load port’ subcomponent to perform load operations from memory or IO. During a load operation, the load port receives data from the memory or IO subsystem and then provides the data to the CPU registers and operations in the CPU’s pipelines. Stale load operations results are stored in the 'load port' table until overwritten by newer operations. Certain load-port operations triggered by an attacker can be used to reveal data about previous stale requests leaking data back to the attacker via a timing side-channel. (CVE-2018-12127)
  • Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. (CVE-2019-11091)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

  • rwsem in inconsistent state leading system to hung (BZ#1690318)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

  • Red Hat Enterprise Linux Server - AUS 7.2 x86_64
  • Red Hat Enterprise Linux Server - TUS 7.2 x86_64
  • Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.2 x86_64

Fixes

  • BZ - 1646781 - CVE-2018-12126 hardware: Microarchitectural Store Buffer Data Sampling (MSBDS)
  • BZ - 1646784 - CVE-2018-12130 hardware: Microarchitectural Fill Buffer Data Sampling (MFBDS)
  • BZ - 1667782 - CVE-2018-12127 hardware: Micro-architectural Load Port Data Sampling - Information Leak (MLPDS)
  • BZ - 1705312 - CVE-2019-11091 hardware: Microarchitectural Data Sampling Uncacheable Memory (MDSUM)

CVEs

  • CVE-2018-12126
  • CVE-2018-12127
  • CVE-2018-12130
  • CVE-2019-11091

References

  • https://access.redhat.com/security/updates/classification/#important
  • https://access.redhat.com/security/vulnerabilities/mds
Note: More recent versions of these packages may be available. Click a package name for more details.

Red Hat Enterprise Linux Server - AUS 7.2

SRPM
kernel-3.10.0-327.78.2.el7.src.rpm SHA-256: b73cbf3ecd775ab18ce826d4d15fc4ea2a9d1d930dc6bad3b24639eeb3fd586a
x86_64
kernel-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: d5048254b37171c1af297721ca79797caa4233e3c9044e1181e92ec1b7456c33
kernel-abi-whitelists-3.10.0-327.78.2.el7.noarch.rpm SHA-256: 53fd3e1da067301b345fcc7177eab0b8f66725ff64a4b005f3185cbec095edc0
kernel-debug-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 839452fa182fb655918870786524b68c5994f8262a4d5cfb71fe931979c4c188
kernel-debug-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: e134adbdd54def490465a8c39dfc377d4703f06716ec9ab08b6af33dbde931ab
kernel-debug-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: e134adbdd54def490465a8c39dfc377d4703f06716ec9ab08b6af33dbde931ab
kernel-debug-devel-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: c974bd4eae68f7ed27ad87f3750f2233067e21c37a75f6719010be33d7e68645
kernel-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 8ac4a4b3040390fe24bf86ea0eaeec7c13388d55d98497f040c9b7e050cb3d40
kernel-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 8ac4a4b3040390fe24bf86ea0eaeec7c13388d55d98497f040c9b7e050cb3d40
kernel-debuginfo-common-x86_64-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 7732892e6ce9f038655dfe0b2f5e806fdaedbe192780318c8af2bf189e7a99f1
kernel-debuginfo-common-x86_64-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 7732892e6ce9f038655dfe0b2f5e806fdaedbe192780318c8af2bf189e7a99f1
kernel-devel-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: bb5630fe3e8a425e868383a70adbc81824f62fc1c587e80a11e89d59a8fc07bf
kernel-doc-3.10.0-327.78.2.el7.noarch.rpm SHA-256: 2b80d8900f4fe9a8a2ad530859d2b2a58ee300b081cd04d1e95dedcedd932d93
kernel-headers-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 1ec0a8ccc967ceccf2cf078ee17f20457352ccca89c3c39c713390d7694e70f8
kernel-tools-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: a87ebcca6e7ccb70611b855f5f0a7b75e7c855c4f913aa4c353236368c79b2be
kernel-tools-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 7887e7dbf66bd7aa070c962544ce28f36efdf654a5eb860805f9246d14a510bc
kernel-tools-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 7887e7dbf66bd7aa070c962544ce28f36efdf654a5eb860805f9246d14a510bc
kernel-tools-libs-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 2b0a0e78e7dac59d2373be713e03dca49331ef14824f898c623a0383a1216245
kernel-tools-libs-devel-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 480f504a3fbc841e91c1d43d29fef911ccd1003b7d1894a434e33545ab946585
perf-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 6f9bc18e117d1593319d7beaccdf84cefc83bbbf1a5611d8fafd0ebfa5a0e827
perf-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: bdbd1a5d23cbc054916fc6086d2573c64f8567c5586312a132fba7e584c5e453
perf-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: bdbd1a5d23cbc054916fc6086d2573c64f8567c5586312a132fba7e584c5e453
python-perf-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 48ce2f95d3d9980ac70003fff5595a36c7a04a790345e1f19a4b77d234b67625
python-perf-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 997fd56b98fa27d653dd23b51ab08aeae205f2292ea8d71d7c234fad3b64a01f
python-perf-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 997fd56b98fa27d653dd23b51ab08aeae205f2292ea8d71d7c234fad3b64a01f

Red Hat Enterprise Linux Server - TUS 7.2

SRPM
kernel-3.10.0-327.78.2.el7.src.rpm SHA-256: b73cbf3ecd775ab18ce826d4d15fc4ea2a9d1d930dc6bad3b24639eeb3fd586a
x86_64
kernel-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: d5048254b37171c1af297721ca79797caa4233e3c9044e1181e92ec1b7456c33
kernel-abi-whitelists-3.10.0-327.78.2.el7.noarch.rpm SHA-256: 53fd3e1da067301b345fcc7177eab0b8f66725ff64a4b005f3185cbec095edc0
kernel-debug-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 839452fa182fb655918870786524b68c5994f8262a4d5cfb71fe931979c4c188
kernel-debug-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: e134adbdd54def490465a8c39dfc377d4703f06716ec9ab08b6af33dbde931ab
kernel-debug-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: e134adbdd54def490465a8c39dfc377d4703f06716ec9ab08b6af33dbde931ab
kernel-debug-devel-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: c974bd4eae68f7ed27ad87f3750f2233067e21c37a75f6719010be33d7e68645
kernel-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 8ac4a4b3040390fe24bf86ea0eaeec7c13388d55d98497f040c9b7e050cb3d40
kernel-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 8ac4a4b3040390fe24bf86ea0eaeec7c13388d55d98497f040c9b7e050cb3d40
kernel-debuginfo-common-x86_64-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 7732892e6ce9f038655dfe0b2f5e806fdaedbe192780318c8af2bf189e7a99f1
kernel-debuginfo-common-x86_64-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 7732892e6ce9f038655dfe0b2f5e806fdaedbe192780318c8af2bf189e7a99f1
kernel-devel-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: bb5630fe3e8a425e868383a70adbc81824f62fc1c587e80a11e89d59a8fc07bf
kernel-doc-3.10.0-327.78.2.el7.noarch.rpm SHA-256: 2b80d8900f4fe9a8a2ad530859d2b2a58ee300b081cd04d1e95dedcedd932d93
kernel-headers-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 1ec0a8ccc967ceccf2cf078ee17f20457352ccca89c3c39c713390d7694e70f8
kernel-tools-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: a87ebcca6e7ccb70611b855f5f0a7b75e7c855c4f913aa4c353236368c79b2be
kernel-tools-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 7887e7dbf66bd7aa070c962544ce28f36efdf654a5eb860805f9246d14a510bc
kernel-tools-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 7887e7dbf66bd7aa070c962544ce28f36efdf654a5eb860805f9246d14a510bc
kernel-tools-libs-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 2b0a0e78e7dac59d2373be713e03dca49331ef14824f898c623a0383a1216245
kernel-tools-libs-devel-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 480f504a3fbc841e91c1d43d29fef911ccd1003b7d1894a434e33545ab946585
perf-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 6f9bc18e117d1593319d7beaccdf84cefc83bbbf1a5611d8fafd0ebfa5a0e827
perf-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: bdbd1a5d23cbc054916fc6086d2573c64f8567c5586312a132fba7e584c5e453
perf-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: bdbd1a5d23cbc054916fc6086d2573c64f8567c5586312a132fba7e584c5e453
python-perf-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 48ce2f95d3d9980ac70003fff5595a36c7a04a790345e1f19a4b77d234b67625
python-perf-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 997fd56b98fa27d653dd23b51ab08aeae205f2292ea8d71d7c234fad3b64a01f
python-perf-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 997fd56b98fa27d653dd23b51ab08aeae205f2292ea8d71d7c234fad3b64a01f

Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.2

SRPM
kernel-3.10.0-327.78.2.el7.src.rpm SHA-256: b73cbf3ecd775ab18ce826d4d15fc4ea2a9d1d930dc6bad3b24639eeb3fd586a
x86_64
kernel-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: d5048254b37171c1af297721ca79797caa4233e3c9044e1181e92ec1b7456c33
kernel-abi-whitelists-3.10.0-327.78.2.el7.noarch.rpm SHA-256: 53fd3e1da067301b345fcc7177eab0b8f66725ff64a4b005f3185cbec095edc0
kernel-debug-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 839452fa182fb655918870786524b68c5994f8262a4d5cfb71fe931979c4c188
kernel-debug-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: e134adbdd54def490465a8c39dfc377d4703f06716ec9ab08b6af33dbde931ab
kernel-debug-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: e134adbdd54def490465a8c39dfc377d4703f06716ec9ab08b6af33dbde931ab
kernel-debug-devel-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: c974bd4eae68f7ed27ad87f3750f2233067e21c37a75f6719010be33d7e68645
kernel-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 8ac4a4b3040390fe24bf86ea0eaeec7c13388d55d98497f040c9b7e050cb3d40
kernel-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 8ac4a4b3040390fe24bf86ea0eaeec7c13388d55d98497f040c9b7e050cb3d40
kernel-debuginfo-common-x86_64-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 7732892e6ce9f038655dfe0b2f5e806fdaedbe192780318c8af2bf189e7a99f1
kernel-debuginfo-common-x86_64-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 7732892e6ce9f038655dfe0b2f5e806fdaedbe192780318c8af2bf189e7a99f1
kernel-devel-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: bb5630fe3e8a425e868383a70adbc81824f62fc1c587e80a11e89d59a8fc07bf
kernel-doc-3.10.0-327.78.2.el7.noarch.rpm SHA-256: 2b80d8900f4fe9a8a2ad530859d2b2a58ee300b081cd04d1e95dedcedd932d93
kernel-headers-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 1ec0a8ccc967ceccf2cf078ee17f20457352ccca89c3c39c713390d7694e70f8
kernel-tools-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: a87ebcca6e7ccb70611b855f5f0a7b75e7c855c4f913aa4c353236368c79b2be
kernel-tools-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 7887e7dbf66bd7aa070c962544ce28f36efdf654a5eb860805f9246d14a510bc
kernel-tools-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 7887e7dbf66bd7aa070c962544ce28f36efdf654a5eb860805f9246d14a510bc
kernel-tools-libs-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 2b0a0e78e7dac59d2373be713e03dca49331ef14824f898c623a0383a1216245
kernel-tools-libs-devel-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 480f504a3fbc841e91c1d43d29fef911ccd1003b7d1894a434e33545ab946585
perf-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 6f9bc18e117d1593319d7beaccdf84cefc83bbbf1a5611d8fafd0ebfa5a0e827
perf-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: bdbd1a5d23cbc054916fc6086d2573c64f8567c5586312a132fba7e584c5e453
perf-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: bdbd1a5d23cbc054916fc6086d2573c64f8567c5586312a132fba7e584c5e453
python-perf-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 48ce2f95d3d9980ac70003fff5595a36c7a04a790345e1f19a4b77d234b67625
python-perf-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 997fd56b98fa27d653dd23b51ab08aeae205f2292ea8d71d7c234fad3b64a01f
python-perf-debuginfo-3.10.0-327.78.2.el7.x86_64.rpm SHA-256: 997fd56b98fa27d653dd23b51ab08aeae205f2292ea8d71d7c234fad3b64a01f

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.

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