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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2539 Important: kernel security and bug fix update 11 October 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 7 Impact/Access: Root Compromise -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-7533 Reference: ESB-2017.2380 ESB-2017.2379 ESB-2017.2278 ESB-2017.2233 Original Bulletin: https://access.redhat.com/errata/RHSA-2017:2869 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2017:2869-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:2869 Issue date: 2017-10-10 CVE Names: CVE-2017-7533 ===================================================================== 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 was found in the Linux kernel, present since v3.14-rc1 through v4.12. The race happens between threads of inotify_handle_event() and vfs_rename() while running the rename operation against the same file. As a result of the race the next slab data or the slab's free list pointer can be corrupted with attacker-controlled data, which may lead to the privilege escalation. (CVE-2017-7533, Important) Red Hat would like to thank Leilei Lin (Alibaba Group), Fan Wu (The University of Hong Kong), and Shixiong Zhao (The University of Hong Kong) for reporting this issue. Bug Fix(es): * Previously, the 'stack:TID' annotation was applied to correctly mark the thread stack in a /proc/<pid>/maps file and it required processing the entire thread list to find the task of a stack Virtual Memory Area (VMA). Consequently, rendering and accessing /proc/<pid>/maps took a long time on systems with a large number of threads running. This update removes the annotation to make the /proc/<pid>/maps and /proc/<pid>/numa_maps files usable for higher thread counts. As a result, the system performance while rendering and accessing /proc/<pid>/maps has improved significantly. (BZ#1481722) 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/): 1468283 - CVE-2017-7533 kernel: a race between inotify_handle_event() and sys_rename() 6. Package List: Red Hat Enterprise Linux ComputeNode EUS (v. 7.2): Source: kernel-3.10.0-327.61.3.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-327.61.3.el7.noarch.rpm kernel-doc-3.10.0-327.61.3.el7.noarch.rpm x86_64: kernel-3.10.0-327.61.3.el7.x86_64.rpm kernel-debug-3.10.0-327.61.3.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.61.3.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.61.3.el7.x86_64.rpm kernel-devel-3.10.0-327.61.3.el7.x86_64.rpm kernel-headers-3.10.0-327.61.3.el7.x86_64.rpm kernel-tools-3.10.0-327.61.3.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.61.3.el7.x86_64.rpm perf-3.10.0-327.61.3.el7.x86_64.rpm perf-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm python-perf-3.10.0-327.61.3.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.2): x86_64: kernel-debug-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.61.3.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.61.3.el7.x86_64.rpm perf-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.2): Source: kernel-3.10.0-327.61.3.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-327.61.3.el7.noarch.rpm kernel-doc-3.10.0-327.61.3.el7.noarch.rpm ppc64: kernel-3.10.0-327.61.3.el7.ppc64.rpm kernel-bootwrapper-3.10.0-327.61.3.el7.ppc64.rpm kernel-debug-3.10.0-327.61.3.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-327.61.3.el7.ppc64.rpm kernel-debug-devel-3.10.0-327.61.3.el7.ppc64.rpm kernel-debuginfo-3.10.0-327.61.3.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-327.61.3.el7.ppc64.rpm kernel-devel-3.10.0-327.61.3.el7.ppc64.rpm kernel-headers-3.10.0-327.61.3.el7.ppc64.rpm kernel-tools-3.10.0-327.61.3.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-327.61.3.el7.ppc64.rpm kernel-tools-libs-3.10.0-327.61.3.el7.ppc64.rpm perf-3.10.0-327.61.3.el7.ppc64.rpm perf-debuginfo-3.10.0-327.61.3.el7.ppc64.rpm python-perf-3.10.0-327.61.3.el7.ppc64.rpm python-perf-debuginfo-3.10.0-327.61.3.el7.ppc64.rpm ppc64le: kernel-3.10.0-327.61.3.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-327.61.3.el7.ppc64le.rpm kernel-debug-3.10.0-327.61.3.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-327.61.3.el7.ppc64le.rpm kernel-debuginfo-3.10.0-327.61.3.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-327.61.3.el7.ppc64le.rpm kernel-devel-3.10.0-327.61.3.el7.ppc64le.rpm kernel-headers-3.10.0-327.61.3.el7.ppc64le.rpm kernel-tools-3.10.0-327.61.3.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-327.61.3.el7.ppc64le.rpm kernel-tools-libs-3.10.0-327.61.3.el7.ppc64le.rpm perf-3.10.0-327.61.3.el7.ppc64le.rpm perf-debuginfo-3.10.0-327.61.3.el7.ppc64le.rpm python-perf-3.10.0-327.61.3.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-327.61.3.el7.ppc64le.rpm s390x: kernel-3.10.0-327.61.3.el7.s390x.rpm kernel-debug-3.10.0-327.61.3.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-327.61.3.el7.s390x.rpm kernel-debug-devel-3.10.0-327.61.3.el7.s390x.rpm kernel-debuginfo-3.10.0-327.61.3.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-327.61.3.el7.s390x.rpm kernel-devel-3.10.0-327.61.3.el7.s390x.rpm kernel-headers-3.10.0-327.61.3.el7.s390x.rpm kernel-kdump-3.10.0-327.61.3.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-327.61.3.el7.s390x.rpm kernel-kdump-devel-3.10.0-327.61.3.el7.s390x.rpm perf-3.10.0-327.61.3.el7.s390x.rpm perf-debuginfo-3.10.0-327.61.3.el7.s390x.rpm python-perf-3.10.0-327.61.3.el7.s390x.rpm python-perf-debuginfo-3.10.0-327.61.3.el7.s390x.rpm x86_64: kernel-3.10.0-327.61.3.el7.x86_64.rpm kernel-debug-3.10.0-327.61.3.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.61.3.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.61.3.el7.x86_64.rpm kernel-devel-3.10.0-327.61.3.el7.x86_64.rpm kernel-headers-3.10.0-327.61.3.el7.x86_64.rpm kernel-tools-3.10.0-327.61.3.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.61.3.el7.x86_64.rpm perf-3.10.0-327.61.3.el7.x86_64.rpm perf-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm python-perf-3.10.0-327.61.3.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.2): ppc64: kernel-debug-debuginfo-3.10.0-327.61.3.el7.ppc64.rpm kernel-debuginfo-3.10.0-327.61.3.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-327.61.3.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-327.61.3.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-327.61.3.el7.ppc64.rpm perf-debuginfo-3.10.0-327.61.3.el7.ppc64.rpm python-perf-debuginfo-3.10.0-327.61.3.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-327.61.3.el7.ppc64le.rpm kernel-debug-devel-3.10.0-327.61.3.el7.ppc64le.rpm kernel-debuginfo-3.10.0-327.61.3.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-327.61.3.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-327.61.3.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-327.61.3.el7.ppc64le.rpm perf-debuginfo-3.10.0-327.61.3.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-327.61.3.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.61.3.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.61.3.el7.x86_64.rpm perf-debuginfo-3.10.0-327.61.3.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.61.3.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-2017-7533 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 iD8DBQFZ3MERXlSAg2UNWIIRAk7tAKCkfoDXwJ/ZQ+LZ2hw8/EQuS4ggIgCfV6yF wKPw8Mk8w52tOL/2m7AMv0o= =bA2k - -----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. 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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 iQIVAwUBWd2FFYx+lLeg9Ub1AQjUTQ/8Cqj5G5/xPHOPNj7YFOh3Pu5amLXqiXRV 2J5f7Ybha9T7gWrQwgDNWTQQ051grDnExazaeO1lJ9PyIA+ux825BDetv6mG7VHn FW7BzgB7HFQXLQbJlm7VezIQSdyWNSoY+aOa4WV53nJtbSKgB4U9ytCSk3PMLY0D m20mcS8dyhov/QQNbhHt1BMZBpZGCRWwC1RTEJqMTkDqWcyeqHsqqbet5HZomiyZ lZSk5X2DEWHcKtxIPlHTLSLc1TqOaYpqSE/DyOkGwDm0M4OHwaWHzzRxIg0HihvA lGXgKwxAQ44qOux/SE36BJfY3zp+zDUR7swjUHRcTIK3eMhBLmUp5yptVPvlOG/l JJioNBfCBg4+I4tZ5ThpuV3aP1fC3g1UoyfqcQS97z2IVqUoxdWNftM4zw3qEGP7 GrVINtS6jisNjfvr/FKhh/woLyD0Y2y1kzNXj1Mcv9l1rleH66XoLg5WFbRHzKyF SDuPLI2FHAL+eWSky36qhsWiP0CN+c9QR7ZYywhpc5BjUC+ageBDxemOeSPs1rK2 7A4whykCU0XRACzZeoH7/sLuleTng4nt6oIgVHdp1VXBPwq+uOhcByQ+vEHOVlGv OrwaPPN1RJHeIrPwKacLDq+QhmDCMQV2O6+mFaMDPbpiYIOOErXuESxeRbjEnaEd ivz8Fzldm/s= =E5HZ -----END PGP SIGNATURE-----