-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security and bug fix update Advisory ID: RHSA-2018:1170-01 Product: Red Hat Enterprise MRG for RHEL-6 Advisory URL: https://access.redhat.com/errata/RHSA-2018:1170 Issue date: 2018-04-17 CVE Names: CVE-2017-8824 CVE-2017-9725 CVE-2017-13166 CVE-2017-15265 CVE-2017-17449 CVE-2017-18017 CVE-2017-1000410 ===================================================================== 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): * kernel: Use-after-free vulnerability in DCCP socket (CVE-2017-8824, Important) * kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation (CVE-2017-13166, Important) * kernel: Incorrect type conversion for size during dma allocation (CVE-2017-9725, Moderate) * kernel: Use-after-free in snd_seq_ioctl_create_port() (CVE-2017-15265, Moderate) * kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity (CVE-2017-17449, Moderate) * kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c (CVE-2017-18017, Moderate) * kernel: Stack information leak in the EFS element (CVE-2017-1000410, Moderate) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank Mohamed Ghannam for reporting CVE-2017-8824 and Armis Labs for reporting CVE-2017-1000410. Bug Fix(es): * The kernel-rt packages have been upgraded to version 3.10.0-693.25.2.rt56.612, which provides a number of security and bug fixes over the previous version. (BZ#1549731) * Intel Core X-Series (Skylake) processors use a hardcoded Time Stamp Counter (TSC) frequency of 25 MHz. In some cases this can be imprecise and lead to timing-related problems such as time drift, timers being triggered early, or TSC clock instability. This update mitigates these problems by no longer using the "native_calibrate_tsc()" function to define the TSC frequency. Refined calibration is now used to update the clock rate accordingly in these cases. (BZ#1547854) 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/): 1489088 - CVE-2017-9725 kernel: Incorrect type conversion for size during dma allocation 1501878 - CVE-2017-15265 kernel: Use-after-free in snd_seq_ioctl_create_port() 1519160 - CVE-2017-1000410 kernel: Stack information leak in the EFS element 1519591 - CVE-2017-8824 kernel: Use-after-free vulnerability in DCCP socket 1525762 - CVE-2017-17449 kernel: Missing namespace check in net/netlink/af_netlink.c allows for network monitors to observe systemwide activity 1531135 - CVE-2017-18017 kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c 1547854 - Latest rt56 real time kernel on Intel i9 has broken TSC 1548412 - CVE-2017-13166 kernel: v4l2: disabled memory access protection mechanism allowing privilege escalation 1549731 - update the MRG 2.5.z 3.10 kernel-rt sources 6. Package List: Red Hat MRG Realtime for RHEL 6 Server v.2: Source: kernel-rt-3.10.0-693.25.2.rt56.612.el6rt.src.rpm noarch: kernel-rt-doc-3.10.0-693.25.2.rt56.612.el6rt.noarch.rpm kernel-rt-firmware-3.10.0-693.25.2.rt56.612.el6rt.noarch.rpm x86_64: kernel-rt-3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm kernel-rt-debug-3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm kernel-rt-debug-devel-3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm kernel-rt-debuginfo-3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm kernel-rt-devel-3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm kernel-rt-trace-3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm kernel-rt-trace-devel-3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm kernel-rt-vanilla-3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm kernel-rt-vanilla-debuginfo-3.10.0-693.25.2.rt56.612.el6rt.x86_64.rpm kernel-rt-vanilla-devel-3.10.0-693.25.2.rt56.612.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-2017-8824 https://access.redhat.com/security/cve/CVE-2017-9725 https://access.redhat.com/security/cve/CVE-2017-13166 https://access.redhat.com/security/cve/CVE-2017-15265 https://access.redhat.com/security/cve/CVE-2017-17449 https://access.redhat.com/security/cve/CVE-2017-18017 https://access.redhat.com/security/cve/CVE-2017-1000410 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 2018 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFa1hMAXlSAg2UNWIIRAj30AJ4p4rGpHFqMjFlJa1xkGxfsXiyrcACgrouS x7xvJRsbcfL1GPqyvcY/vOU= =Y2PE -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce