-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2019:1190-01 Product: Red Hat Enterprise MRG for RHEL-6 Advisory URL: https://access.redhat.com/errata/RHSA-2019:1190 Issue date: 2019-05-14 CVE Names: CVE-2016-7913 CVE-2016-8633 CVE-2017-11600 CVE-2017-12190 CVE-2017-13215 CVE-2017-16939 CVE-2017-17558 CVE-2018-1068 CVE-2018-3665 CVE-2018-12126 CVE-2018-12127 CVE-2018-12130 CVE-2018-18559 CVE-2019-11091 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise MRG 2. 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. 2. Relevant releases/architectures: Red Hat MRG Realtime for RHEL 6 Server v.2 - noarch, x86_64 3. Description: The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. 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) * kernel: Buffer overflow in firewire driver via crafted incoming packets (CVE-2016-8633) * kernel: crypto: privilege escalation in skcipher_recvmsg function (CVE-2017-13215) * Kernel: ipsec: xfrm: use-after-free leading to potential privilege escalation (CVE-2017-16939) * kernel: Out-of-bounds write via userland offsets in ebt_entry struct in netfilter/ebtables.c (CVE-2018-1068) * kernel: Use-after-free due to race condition in AF_PACKET implementation (CVE-2018-18559) * kernel: media: use-after-free in [tuner-xc2028] media driver (CVE-2016-7913) * kernel: Out-of-bounds access via an XFRM_MSG_MIGRATE xfrm Netlink message (CVE-2017-11600) * kernel: memory leak when merging buffers in SCSI IO vectors (CVE-2017-12190) * kernel: Unallocated memory access by malicious USB device via bNumInterfaces overflow (CVE-2017-17558) * Kernel: FPU state information leakage via lazy FPU restore (CVE-2018-3665) 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): * update the MRG 2.5.z 3.10 kernel-rt sources (BZ#1692711) 4. 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. 5. Bugs fixed (https://bugzilla.redhat.com/): 1391490 - CVE-2016-8633 kernel: Buffer overflow in firewire driver via crafted incoming packets 1402885 - CVE-2016-7913 kernel: media: use-after-free in [tuner-xc2028] media driver 1474928 - CVE-2017-11600 kernel: Out-of-bounds access via an XFRM_MSG_MIGRATE xfrm Netlink message 1495089 - CVE-2017-12190 kernel: memory leak when merging buffers in SCSI IO vectors 1517220 - CVE-2017-16939 Kernel: ipsec: xfrm: use-after-free leading to potential privilege escalation 1525474 - CVE-2017-17558 kernel: Unallocated memory access by malicious USB device via bNumInterfaces overflow 1535173 - CVE-2017-13215 kernel: crypto: privilege escalation in skcipher_recvmsg function 1552048 - CVE-2018-1068 kernel: Out-of-bounds write via userland offsets in ebt_entry struct in netfilter/ebtables.c 1585011 - CVE-2018-3665 Kernel: FPU state information leakage via lazy FPU restore 1641878 - CVE-2018-18559 kernel: Use-after-free due to race condition in AF_PACKET implementation 1646781 - CVE-2018-12126 hardware: Microarchitectural Store Buffer Data Sampling (MSBDS) 1646784 - CVE-2018-12130 hardware: Microarchitectural Fill Buffer Data Sampling (MFBDS) 1667782 - CVE-2018-12127 hardware: Micro-architectural Load Port Data Sampling - Information Leak (MLPDS) 1692711 - update the MRG 2.5.z 3.10 kernel-rt sources 1705312 - CVE-2019-11091 hardware: Microarchitectural Data Sampling Uncacheable Memory (MDSUM) 6. Package List: Red Hat MRG Realtime for RHEL 6 Server v.2: Source: kernel-rt-3.10.0-693.47.2.rt56.641.el6rt.src.rpm noarch: kernel-rt-doc-3.10.0-693.47.2.rt56.641.el6rt.noarch.rpm kernel-rt-firmware-3.10.0-693.47.2.rt56.641.el6rt.noarch.rpm x86_64: kernel-rt-3.10.0-693.47.2.rt56.641.el6rt.x86_64.rpm kernel-rt-debug-3.10.0-693.47.2.rt56.641.el6rt.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-693.47.2.rt56.641.el6rt.x86_64.rpm kernel-rt-debug-devel-3.10.0-693.47.2.rt56.641.el6rt.x86_64.rpm kernel-rt-debuginfo-3.10.0-693.47.2.rt56.641.el6rt.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-693.47.2.rt56.641.el6rt.x86_64.rpm kernel-rt-devel-3.10.0-693.47.2.rt56.641.el6rt.x86_64.rpm kernel-rt-trace-3.10.0-693.47.2.rt56.641.el6rt.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-693.47.2.rt56.641.el6rt.x86_64.rpm kernel-rt-trace-devel-3.10.0-693.47.2.rt56.641.el6rt.x86_64.rpm kernel-rt-vanilla-3.10.0-693.47.2.rt56.641.el6rt.x86_64.rpm kernel-rt-vanilla-debuginfo-3.10.0-693.47.2.rt56.641.el6rt.x86_64.rpm kernel-rt-vanilla-devel-3.10.0-693.47.2.rt56.641.el6rt.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/ 7. References: https://access.redhat.com/security/cve/CVE-2016-7913 https://access.redhat.com/security/cve/CVE-2016-8633 https://access.redhat.com/security/cve/CVE-2017-11600 https://access.redhat.com/security/cve/CVE-2017-12190 https://access.redhat.com/security/cve/CVE-2017-13215 https://access.redhat.com/security/cve/CVE-2017-16939 https://access.redhat.com/security/cve/CVE-2017-17558 https://access.redhat.com/security/cve/CVE-2018-1068 https://access.redhat.com/security/cve/CVE-2018-3665 https://access.redhat.com/security/cve/CVE-2018-12126 https://access.redhat.com/security/cve/CVE-2018-12127 https://access.redhat.com/security/cve/CVE-2018-12130 https://access.redhat.com/security/cve/CVE-2018-18559 https://access.redhat.com/security/cve/CVE-2019-11091 https://access.redhat.com/security/vulnerabilities/mds https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2019 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXNsknNzjgjWX9erEAQjpAQ/9HuV7LWnQ41hASz4HSbew0m6Pg5mLLrXz zr8VoS3lTX2DLT34YwnOIuFhb+iJd8ky1qbjP9xBqnX66e2WHDeoTIfCM+bxSkKo gEM6CcheaOar+5HUORbjVnG7MQzcUpNzzGlD/CH37nNkTfNSA5zYFbtW5kOb2ULP v5jekOtNOKn87uEz3WNJD5EHwrP8JNGeVIped2GT/vNfcJsHtTUElP+J15zbzlE8 4XiNu2yKEJowKrzlk5VlJH9cfwyoy++hrknVPuSnc1dXqxIjeyGGGgmlDqeyLKqg BpDLP/MsFBKcOm+xwGx52a1f7TRZ1uznmSThI5RyqJS0Gg1805Z/aFlfhcqBSJn4 osk1Q/WbdRSaK4wW229Pd66BPF7p9C81k9Q0/AUqQpmoxj7kdvHQ3jWhOGfuoDOn pXXfv2VALdE1Pcc7CmqR+g0aEOI0DJ2by4zRs10yIKBHgCRLuksZIMfCAexrQcmu XiB2GmezJFw9ViF6/RFxScbNpiLtPSyocbswXSaCPeGq7MFzY2aVSRBaP9xfuXrJ 61/6202eRs8ey+BxYOTbYRikeTX7ZaNvqxZFlqaiUpEew5GuIZZSeszK+fRudNxd uRfBFjmTHYOzD4s+aLIh9t2NJkDr+SIUKea9Wpg4B7QJG8AyW7aiQd+MvfNZqCB3 8rHiMppn5pQ= =EOJK -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce