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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.1031 Important: kernel security and bug fix update 26 April 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Red Hat Enterprise Linux Server 7 Impact/Access: Root Compromise -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-2636 Reference: ESB-2017.0990 ESB-2017.0950 ESB-2017.0852 ESB-2017.0614 Original Bulletin: https://access.redhat.com/errata/RHSA-2017:1125 https://access.redhat.com/errata/RHSA-2017:1126 Comment: This bulletin contains two (2) Red Hat security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2017:1125-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:1125 Issue date: 2017-04-25 CVE Names: CVE-2017-2636 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 7.2 Extended Update Support. 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 Enterprise Linux ComputeNode EUS (v. 7.2) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.2) - x86_64 Red Hat Enterprise Linux Server EUS (v. 7.2) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional EUS (v. 7.2) - ppc64, ppc64le, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * A race condition flaw was found in the N_HLDC Linux kernel driver when accessing n_hdlc.tbuf list that can lead to double free. A local, unprivileged user able to set the HDLC line discipline on the tty device could use this flaw to increase their privileges on the system. (CVE-2017-2636, Important) Red Hat would like to thank Alexander Popov for reporting this issue. Bug Fix(es): * Previously, memory allocation in the libceph kernel module did not work correctly. Consequently, the file system on a RADOS Block Device(RBD) could become unresponsive in the situations under high memory pressure. With this update, the underlying source code has been fixed, and the file system no longer hangs in the described scenario. (BZ#1418314) * Previously, the mpt3sas driver incorrectly checked the Transport Layer Retries (TLR) state even on Redundant Array Of Independent Discs (RAID) devices. Consequently, a kernel panic occurred when mpt3sas attempted to read from the RAID devices. With this update, mpt3sas has been fixed to check the TLR state only for non-RAID devices, and the kernel no longer panics under the described circumstances. (BZ#1427453) 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/): 1428319 - CVE-2017-2636 kernel: Race condition access to n_hdlc.tbuf causes double free in n_hdlc_release() 6. Package List: Red Hat Enterprise Linux ComputeNode EUS (v. 7.2): Source: kernel-3.10.0-327.53.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-327.53.1.el7.noarch.rpm kernel-doc-3.10.0-327.53.1.el7.noarch.rpm x86_64: kernel-3.10.0-327.53.1.el7.x86_64.rpm kernel-debug-3.10.0-327.53.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.53.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.53.1.el7.x86_64.rpm kernel-devel-3.10.0-327.53.1.el7.x86_64.rpm kernel-headers-3.10.0-327.53.1.el7.x86_64.rpm kernel-tools-3.10.0-327.53.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.53.1.el7.x86_64.rpm perf-3.10.0-327.53.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm python-perf-3.10.0-327.53.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.2): x86_64: kernel-debug-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.53.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.53.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.2): Source: kernel-3.10.0-327.53.1.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-327.53.1.el7.noarch.rpm kernel-doc-3.10.0-327.53.1.el7.noarch.rpm ppc64: kernel-3.10.0-327.53.1.el7.ppc64.rpm kernel-bootwrapper-3.10.0-327.53.1.el7.ppc64.rpm kernel-debug-3.10.0-327.53.1.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-327.53.1.el7.ppc64.rpm kernel-debug-devel-3.10.0-327.53.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-327.53.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-327.53.1.el7.ppc64.rpm kernel-devel-3.10.0-327.53.1.el7.ppc64.rpm kernel-headers-3.10.0-327.53.1.el7.ppc64.rpm kernel-tools-3.10.0-327.53.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-327.53.1.el7.ppc64.rpm kernel-tools-libs-3.10.0-327.53.1.el7.ppc64.rpm perf-3.10.0-327.53.1.el7.ppc64.rpm perf-debuginfo-3.10.0-327.53.1.el7.ppc64.rpm python-perf-3.10.0-327.53.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-327.53.1.el7.ppc64.rpm ppc64le: kernel-3.10.0-327.53.1.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-327.53.1.el7.ppc64le.rpm kernel-debug-3.10.0-327.53.1.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-327.53.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-327.53.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-327.53.1.el7.ppc64le.rpm kernel-devel-3.10.0-327.53.1.el7.ppc64le.rpm kernel-headers-3.10.0-327.53.1.el7.ppc64le.rpm kernel-tools-3.10.0-327.53.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-327.53.1.el7.ppc64le.rpm kernel-tools-libs-3.10.0-327.53.1.el7.ppc64le.rpm perf-3.10.0-327.53.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-327.53.1.el7.ppc64le.rpm python-perf-3.10.0-327.53.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-327.53.1.el7.ppc64le.rpm s390x: kernel-3.10.0-327.53.1.el7.s390x.rpm kernel-debug-3.10.0-327.53.1.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-327.53.1.el7.s390x.rpm kernel-debug-devel-3.10.0-327.53.1.el7.s390x.rpm kernel-debuginfo-3.10.0-327.53.1.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-327.53.1.el7.s390x.rpm kernel-devel-3.10.0-327.53.1.el7.s390x.rpm kernel-headers-3.10.0-327.53.1.el7.s390x.rpm kernel-kdump-3.10.0-327.53.1.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-327.53.1.el7.s390x.rpm kernel-kdump-devel-3.10.0-327.53.1.el7.s390x.rpm perf-3.10.0-327.53.1.el7.s390x.rpm perf-debuginfo-3.10.0-327.53.1.el7.s390x.rpm python-perf-3.10.0-327.53.1.el7.s390x.rpm python-perf-debuginfo-3.10.0-327.53.1.el7.s390x.rpm x86_64: kernel-3.10.0-327.53.1.el7.x86_64.rpm kernel-debug-3.10.0-327.53.1.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.53.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.53.1.el7.x86_64.rpm kernel-devel-3.10.0-327.53.1.el7.x86_64.rpm kernel-headers-3.10.0-327.53.1.el7.x86_64.rpm kernel-tools-3.10.0-327.53.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.53.1.el7.x86_64.rpm perf-3.10.0-327.53.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm python-perf-3.10.0-327.53.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.2): ppc64: kernel-debug-debuginfo-3.10.0-327.53.1.el7.ppc64.rpm kernel-debuginfo-3.10.0-327.53.1.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-327.53.1.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-327.53.1.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-327.53.1.el7.ppc64.rpm perf-debuginfo-3.10.0-327.53.1.el7.ppc64.rpm python-perf-debuginfo-3.10.0-327.53.1.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-327.53.1.el7.ppc64le.rpm kernel-debug-devel-3.10.0-327.53.1.el7.ppc64le.rpm kernel-debuginfo-3.10.0-327.53.1.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-327.53.1.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-327.53.1.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-327.53.1.el7.ppc64le.rpm perf-debuginfo-3.10.0-327.53.1.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-327.53.1.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.53.1.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.53.1.el7.x86_64.rpm perf-debuginfo-3.10.0-327.53.1.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.53.1.el7.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-2017-2636 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFY/yLjXlSAg2UNWIIRAqhLAJ4yeRBPXI8Mw2pFH9gnViTV+M+e1wCePG5U Gq9I7PU+yv9v90c1PA2m8yk= =+Q5N - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2017:1126-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:1126 Issue date: 2017-04-25 CVE Names: CVE-2017-2636 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 6.2 Advanced Update Support. 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 Enterprise Linux Server AUS (v. 6.2) - noarch, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.2) - x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * A race condition flaw was found in the N_HLDC Linux kernel driver when accessing n_hdlc.tbuf list that can lead to double free. A local, unprivileged user able to set the HDLC line discipline on the tty device could use this flaw to increase their privileges on the system. (CVE-2017-2636, Important) Red Hat would like to thank Alexander Popov for reporting this issue. 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/): 1428319 - CVE-2017-2636 kernel: Race condition access to n_hdlc.tbuf causes double free in n_hdlc_release() 6. Package List: Red Hat Enterprise Linux Server AUS (v. 6.2): Source: kernel-2.6.32-220.71.1.el6.src.rpm noarch: kernel-doc-2.6.32-220.71.1.el6.noarch.rpm kernel-firmware-2.6.32-220.71.1.el6.noarch.rpm x86_64: kernel-2.6.32-220.71.1.el6.x86_64.rpm kernel-debug-2.6.32-220.71.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-220.71.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-220.71.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.71.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.71.1.el6.x86_64.rpm kernel-devel-2.6.32-220.71.1.el6.x86_64.rpm kernel-headers-2.6.32-220.71.1.el6.x86_64.rpm perf-2.6.32-220.71.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.71.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-220.71.1.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.2): Source: kernel-2.6.32-220.71.1.el6.src.rpm x86_64: kernel-debug-debuginfo-2.6.32-220.71.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-220.71.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-220.71.1.el6.x86_64.rpm perf-debuginfo-2.6.32-220.71.1.el6.x86_64.rpm python-perf-2.6.32-220.71.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-220.71.1.el6.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-2017-2636 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFY/yMBXlSAg2UNWIIRAvGiAJwKoor6d0rNaEyLthBs8SKJrWTWkQCgiFRH OfxH8dI0KACsfx/8IhC9bFM= =rTvN - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWP/ocox+lLeg9Ub1AQisBhAAk/BPYN+e1RNVL0wwucHRZ3Az0c1TZeOu yTfqBEHNTs2Ej/mxdsJnjF3RKw+Xcc+mpbRLWrfjVPZgThIxdLD9BpLXCY+q2gib DXEVpaOUG33SFa/TSfLfj6QWIk9jGulF1/Hmfk7m2B7MiyvJkAiIl8mwylwbLxEx 4TLcNF8EnhKfG3WPY3SIgy+MtJO4i18n9ZreIK7b6JLWCB2jYrlKmoKXhXGHDfrs 28m/dp+cNa6RaNSJcSdzr5znV9VQktctG6t19njhT2Yy1URjBBjUbprgwok12+i2 0Nxg46hBd6WakIGvADsjKfvrSO3urZ9Tv8qivSuB7cF+Sv91rIYlI+ZU8Fcvs/+o YXc2avwWdnfBZiAHsJkxaTZ7jXpgvoZTTGRFriMR+htbtqjJUxrx6UkV1sIehnjg Kj1GrWLtRtkrxf0xnGvcEiCweOyGESjiALPB9gjMMTuO+vUXfKsyJQVOqohv4XX0 RodEirj7048YPBpyZqpBy74phHFus6Y/HetJ40cD8Y+Lz06b1s7LweenCGeUw84A xe6p/t4+rqwYwgu2Sqji/IsBy/S+0MhbLOeG1Y9RvVmeVM0D2lPLUBLZrDmZ0MYR 0fhUDpdkML8D0aV+qvbA9P+21S9ZjP7IQsxTNoDufwwl/ly6jBzP1kymQgG1DjMU ygjIjeRlMcs= =HPCA -----END PGP SIGNATURE-----