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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2317 Important: kernel-rt security update 14 September 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel-rt Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 7 Red Hat Enterprise Linux Server 6 Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-1000251 Reference: ESB-2017.2298 Original Bulletin: https://access.redhat.com/errata/RHSA-2017:2704 https://access.redhat.com/errata/RHSA-2017:2705 https://access.redhat.com/errata/RHSA-2017:2706 https://access.redhat.com/errata/RHSA-2017:2707 Comment: This bulletin contains four (4) Red Hat security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security update Advisory ID: RHSA-2017:2704-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:2704 Issue date: 2017-09-13 CVE Names: CVE-2017-1000251 ===================================================================== 1. Summary: An update for kernel-rt is now available for Red Hat Enterprise Linux 7. 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 Realtime (v. 7) - noarch, x86_64 Red Hat Enterprise Linux for Real Time for NFV (v. 7) - 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 stack buffer overflow flaw was found in the way the Bluetooth subsystem of the Linux kernel processed pending L2CAP configuration responses from a client. On systems with the stack protection feature enabled in the kernel (CONFIG_CC_STACKPROTECTOR=y, which is enabled on all architectures other than s390x and ppc64[le]), an unauthenticated attacker able to initiate a connection to a system via Bluetooth could use this flaw to crash the system. Due to the nature of the stack protection feature, code execution cannot be fully ruled out, although we believe it is unlikely. On systems without the stack protection feature (ppc64[le]; the Bluetooth modules are not built on s390x), an unauthenticated attacker able to initiate a connection to a system via Bluetooth could use this flaw to remotely execute arbitrary code on the system with ring 0 (kernel) privileges. (CVE-2017-1000251, Important) Red Hat would like to thank Armis Labs 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/): 1489716 - CVE-2017-1000251 kernel: stack buffer overflow in the native Bluetooth stack 6. Package List: Red Hat Enterprise Linux for Real Time for NFV (v. 7): Source: kernel-rt-3.10.0-693.2.2.rt56.623.el7.src.rpm noarch: kernel-rt-doc-3.10.0-693.2.2.rt56.623.el7.noarch.rpm x86_64: kernel-rt-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-debug-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-debug-kvm-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-debug-kvm-debuginfo-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-devel-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-kvm-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-kvm-debuginfo-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-trace-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-trace-kvm-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-trace-kvm-debuginfo-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm Red Hat Enterprise Linux Realtime (v. 7): Source: kernel-rt-3.10.0-693.2.2.rt56.623.el7.src.rpm noarch: kernel-rt-doc-3.10.0-693.2.2.rt56.623.el7.noarch.rpm x86_64: kernel-rt-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-debug-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-debug-devel-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-debuginfo-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-devel-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-trace-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-693.2.2.rt56.623.el7.x86_64.rpm kernel-rt-trace-devel-3.10.0-693.2.2.rt56.623.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-2017-1000251 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/CVE-2017-1000251 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 iD8DBQFZuTZLXlSAg2UNWIIRAoQeAKCTlKioVGkLedgQwNZ6Innol0zBIQCgshaV HTTFfjAj2rjH9pdR1SjSgCo= =+92Y - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel-rt security update Advisory ID: RHSA-2017:2705-01 Product: Red Hat Enterprise MRG for RHEL-6 Advisory URL: https://access.redhat.com/errata/RHSA-2017:2705 Issue date: 2017-09-13 CVE Names: CVE-2017-1000251 ===================================================================== 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: 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 stack buffer overflow flaw was found in the way the Bluetooth subsystem of the Linux kernel processed pending L2CAP configuration responses from a client. On systems with the stack protection feature enabled in the kernel (CONFIG_CC_STACKPROTECTOR=y, which is enabled on all architectures other than s390x and ppc64[le]), an unauthenticated attacker able to initiate a connection to a system via Bluetooth could use this flaw to crash the system. Due to the nature of the stack protection feature, code execution cannot be fully ruled out, although we believe it is unlikely. On systems without the stack protection feature (ppc64[le]; the Bluetooth modules are not built on s390x), an unauthenticated attacker able to initiate a connection to a system via Bluetooth could use this flaw to remotely execute arbitrary code on the system with ring 0 (kernel) privileges. (CVE-2017-1000251, Important) Red Hat would like to thank Armis Labs 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/): 1489716 - CVE-2017-1000251 kernel: stack buffer overflow in the native Bluetooth stack 6. Package List: MRG Realtime for RHEL 6 Server v.2: Source: kernel-rt-3.10.0-693.2.2.rt56.588.el6rt.src.rpm noarch: kernel-rt-doc-3.10.0-693.2.2.rt56.588.el6rt.noarch.rpm kernel-rt-firmware-3.10.0-693.2.2.rt56.588.el6rt.noarch.rpm x86_64: kernel-rt-3.10.0-693.2.2.rt56.588.el6rt.x86_64.rpm kernel-rt-debug-3.10.0-693.2.2.rt56.588.el6rt.x86_64.rpm kernel-rt-debug-debuginfo-3.10.0-693.2.2.rt56.588.el6rt.x86_64.rpm kernel-rt-debug-devel-3.10.0-693.2.2.rt56.588.el6rt.x86_64.rpm kernel-rt-debuginfo-3.10.0-693.2.2.rt56.588.el6rt.x86_64.rpm kernel-rt-debuginfo-common-x86_64-3.10.0-693.2.2.rt56.588.el6rt.x86_64.rpm kernel-rt-devel-3.10.0-693.2.2.rt56.588.el6rt.x86_64.rpm kernel-rt-trace-3.10.0-693.2.2.rt56.588.el6rt.x86_64.rpm kernel-rt-trace-debuginfo-3.10.0-693.2.2.rt56.588.el6rt.x86_64.rpm kernel-rt-trace-devel-3.10.0-693.2.2.rt56.588.el6rt.x86_64.rpm kernel-rt-vanilla-3.10.0-693.2.2.rt56.588.el6rt.x86_64.rpm kernel-rt-vanilla-debuginfo-3.10.0-693.2.2.rt56.588.el6rt.x86_64.rpm kernel-rt-vanilla-devel-3.10.0-693.2.2.rt56.588.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-2017-1000251 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/CVE-2017-1000251 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 iD8DBQFZuTbEXlSAg2UNWIIRAgMVAJ4ziO7FpRoG6TjxRqU5DpNRM9S11QCeL7SZ cBSUO99uMzbnTFvEXs/KOjE= =YEla - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2017:2706-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:2706 Issue date: 2017-09-13 CVE Names: CVE-2017-1000251 ===================================================================== 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 stack buffer overflow flaw was found in the way the Bluetooth subsystem of the Linux kernel processed pending L2CAP configuration responses from a client. On systems with the stack protection feature enabled in the kernel (CONFIG_CC_STACKPROTECTOR=y, which is enabled on all architectures other than s390x and ppc64[le]), an unauthenticated attacker able to initiate a connection to a system via Bluetooth could use this flaw to crash the system. Due to the nature of the stack protection feature, code execution cannot be fully ruled out, although we believe it is unlikely. On systems without the stack protection feature (ppc64[le]; the Bluetooth modules are not built on s390x), an unauthenticated attacker able to initiate a connection to a system via Bluetooth could use this flaw to remotely execute arbitrary code on the system with ring 0 (kernel) privileges. (CVE-2017-1000251, Important) Red Hat would like to thank Armis Labs 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/): 1489716 - CVE-2017-1000251 kernel: stack buffer overflow in the native Bluetooth stack 6. Package List: Red Hat Enterprise Linux ComputeNode EUS (v. 7.2): Source: kernel-3.10.0-327.59.2.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-327.59.2.el7.noarch.rpm kernel-doc-3.10.0-327.59.2.el7.noarch.rpm x86_64: kernel-3.10.0-327.59.2.el7.x86_64.rpm kernel-debug-3.10.0-327.59.2.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.59.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.59.2.el7.x86_64.rpm kernel-devel-3.10.0-327.59.2.el7.x86_64.rpm kernel-headers-3.10.0-327.59.2.el7.x86_64.rpm kernel-tools-3.10.0-327.59.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.59.2.el7.x86_64.rpm perf-3.10.0-327.59.2.el7.x86_64.rpm perf-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm python-perf-3.10.0-327.59.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.2): x86_64: kernel-debug-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.59.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.59.2.el7.x86_64.rpm perf-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 7.2): Source: kernel-3.10.0-327.59.2.el7.src.rpm noarch: kernel-abi-whitelists-3.10.0-327.59.2.el7.noarch.rpm kernel-doc-3.10.0-327.59.2.el7.noarch.rpm ppc64: kernel-3.10.0-327.59.2.el7.ppc64.rpm kernel-bootwrapper-3.10.0-327.59.2.el7.ppc64.rpm kernel-debug-3.10.0-327.59.2.el7.ppc64.rpm kernel-debug-debuginfo-3.10.0-327.59.2.el7.ppc64.rpm kernel-debug-devel-3.10.0-327.59.2.el7.ppc64.rpm kernel-debuginfo-3.10.0-327.59.2.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-327.59.2.el7.ppc64.rpm kernel-devel-3.10.0-327.59.2.el7.ppc64.rpm kernel-headers-3.10.0-327.59.2.el7.ppc64.rpm kernel-tools-3.10.0-327.59.2.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-327.59.2.el7.ppc64.rpm kernel-tools-libs-3.10.0-327.59.2.el7.ppc64.rpm perf-3.10.0-327.59.2.el7.ppc64.rpm perf-debuginfo-3.10.0-327.59.2.el7.ppc64.rpm python-perf-3.10.0-327.59.2.el7.ppc64.rpm python-perf-debuginfo-3.10.0-327.59.2.el7.ppc64.rpm ppc64le: kernel-3.10.0-327.59.2.el7.ppc64le.rpm kernel-bootwrapper-3.10.0-327.59.2.el7.ppc64le.rpm kernel-debug-3.10.0-327.59.2.el7.ppc64le.rpm kernel-debug-debuginfo-3.10.0-327.59.2.el7.ppc64le.rpm kernel-debuginfo-3.10.0-327.59.2.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-327.59.2.el7.ppc64le.rpm kernel-devel-3.10.0-327.59.2.el7.ppc64le.rpm kernel-headers-3.10.0-327.59.2.el7.ppc64le.rpm kernel-tools-3.10.0-327.59.2.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-327.59.2.el7.ppc64le.rpm kernel-tools-libs-3.10.0-327.59.2.el7.ppc64le.rpm perf-3.10.0-327.59.2.el7.ppc64le.rpm perf-debuginfo-3.10.0-327.59.2.el7.ppc64le.rpm python-perf-3.10.0-327.59.2.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-327.59.2.el7.ppc64le.rpm s390x: kernel-3.10.0-327.59.2.el7.s390x.rpm kernel-debug-3.10.0-327.59.2.el7.s390x.rpm kernel-debug-debuginfo-3.10.0-327.59.2.el7.s390x.rpm kernel-debug-devel-3.10.0-327.59.2.el7.s390x.rpm kernel-debuginfo-3.10.0-327.59.2.el7.s390x.rpm kernel-debuginfo-common-s390x-3.10.0-327.59.2.el7.s390x.rpm kernel-devel-3.10.0-327.59.2.el7.s390x.rpm kernel-headers-3.10.0-327.59.2.el7.s390x.rpm kernel-kdump-3.10.0-327.59.2.el7.s390x.rpm kernel-kdump-debuginfo-3.10.0-327.59.2.el7.s390x.rpm kernel-kdump-devel-3.10.0-327.59.2.el7.s390x.rpm perf-3.10.0-327.59.2.el7.s390x.rpm perf-debuginfo-3.10.0-327.59.2.el7.s390x.rpm python-perf-3.10.0-327.59.2.el7.s390x.rpm python-perf-debuginfo-3.10.0-327.59.2.el7.s390x.rpm x86_64: kernel-3.10.0-327.59.2.el7.x86_64.rpm kernel-debug-3.10.0-327.59.2.el7.x86_64.rpm kernel-debug-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm kernel-debug-devel-3.10.0-327.59.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.59.2.el7.x86_64.rpm kernel-devel-3.10.0-327.59.2.el7.x86_64.rpm kernel-headers-3.10.0-327.59.2.el7.x86_64.rpm kernel-tools-3.10.0-327.59.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm kernel-tools-libs-3.10.0-327.59.2.el7.x86_64.rpm perf-3.10.0-327.59.2.el7.x86_64.rpm perf-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm python-perf-3.10.0-327.59.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional EUS (v. 7.2): ppc64: kernel-debug-debuginfo-3.10.0-327.59.2.el7.ppc64.rpm kernel-debuginfo-3.10.0-327.59.2.el7.ppc64.rpm kernel-debuginfo-common-ppc64-3.10.0-327.59.2.el7.ppc64.rpm kernel-tools-debuginfo-3.10.0-327.59.2.el7.ppc64.rpm kernel-tools-libs-devel-3.10.0-327.59.2.el7.ppc64.rpm perf-debuginfo-3.10.0-327.59.2.el7.ppc64.rpm python-perf-debuginfo-3.10.0-327.59.2.el7.ppc64.rpm ppc64le: kernel-debug-debuginfo-3.10.0-327.59.2.el7.ppc64le.rpm kernel-debug-devel-3.10.0-327.59.2.el7.ppc64le.rpm kernel-debuginfo-3.10.0-327.59.2.el7.ppc64le.rpm kernel-debuginfo-common-ppc64le-3.10.0-327.59.2.el7.ppc64le.rpm kernel-tools-debuginfo-3.10.0-327.59.2.el7.ppc64le.rpm kernel-tools-libs-devel-3.10.0-327.59.2.el7.ppc64le.rpm perf-debuginfo-3.10.0-327.59.2.el7.ppc64le.rpm python-perf-debuginfo-3.10.0-327.59.2.el7.ppc64le.rpm x86_64: kernel-debug-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm kernel-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm kernel-debuginfo-common-x86_64-3.10.0-327.59.2.el7.x86_64.rpm kernel-tools-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm kernel-tools-libs-devel-3.10.0-327.59.2.el7.x86_64.rpm perf-debuginfo-3.10.0-327.59.2.el7.x86_64.rpm python-perf-debuginfo-3.10.0-327.59.2.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-2017-1000251 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/CVE-2017-1000251 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 iD8DBQFZuT5IXlSAg2UNWIIRAsIeAJ409Ta1dtIgl/yycw97rlxiiy47wgCggrp+ oNZCjmOdbOjMskaYj0nhm5c= =0qe9 - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security and bug fix update Advisory ID: RHSA-2017:2707-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:2707 Issue date: 2017-09-13 CVE Names: CVE-2017-1000251 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 6.5 Advanced Update Support and Red Hat Enterprise Linux 6.5 Telco 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 Server AUS (v. 6.5) - noarch, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.5) - x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 6.5) - x86_64 Red Hat Enterprise Linux Server TUS (v. 6.5) - noarch, x86_64 3. Description: The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * A stack buffer overflow flaw was found in the way the Bluetooth subsystem of the Linux kernel processed pending L2CAP configuration responses from a client. On systems with the stack protection feature enabled in the kernel (CONFIG_CC_STACKPROTECTOR=y, which is enabled on all architectures other than s390x and ppc64[le]), an unauthenticated attacker able to initiate a connection to a system via Bluetooth could use this flaw to crash the system. Due to the nature of the stack protection feature, code execution cannot be fully ruled out, although we believe it is unlikely. On systems without the stack protection feature (ppc64[le]; the Bluetooth modules are not built on s390x), an unauthenticated attacker able to initiate a connection to a system via Bluetooth could use this flaw to remotely execute arbitrary code on the system with ring 0 (kernel) privileges. (CVE-2017-1000251, Important) Red Hat would like to thank Armis Labs for reporting this issue. Bug Fix(es): * Previously, while the MAP_GROWSDOWN flag was set, writing to the memory which was mapped with the mmap system call failed with the SIGBUS signal. This update fixes memory management in the Linux kernel by backporting an upstream patch that enlarges the stack guard page gap. As a result, mmap now works as expected under the described circumstances. (BZ#1474723) 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/): 1489716 - CVE-2017-1000251 kernel: stack buffer overflow in the native Bluetooth stack 6. Package List: Red Hat Enterprise Linux Server AUS (v. 6.5): Source: kernel-2.6.32-431.84.1.el6.src.rpm noarch: kernel-abi-whitelists-2.6.32-431.84.1.el6.noarch.rpm kernel-doc-2.6.32-431.84.1.el6.noarch.rpm kernel-firmware-2.6.32-431.84.1.el6.noarch.rpm x86_64: kernel-2.6.32-431.84.1.el6.x86_64.rpm kernel-debug-2.6.32-431.84.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-431.84.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-431.84.1.el6.x86_64.rpm kernel-devel-2.6.32-431.84.1.el6.x86_64.rpm kernel-headers-2.6.32-431.84.1.el6.x86_64.rpm perf-2.6.32-431.84.1.el6.x86_64.rpm perf-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 6.5): Source: kernel-2.6.32-431.84.1.el6.src.rpm noarch: kernel-abi-whitelists-2.6.32-431.84.1.el6.noarch.rpm kernel-doc-2.6.32-431.84.1.el6.noarch.rpm kernel-firmware-2.6.32-431.84.1.el6.noarch.rpm x86_64: kernel-2.6.32-431.84.1.el6.x86_64.rpm kernel-debug-2.6.32-431.84.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-431.84.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-431.84.1.el6.x86_64.rpm kernel-devel-2.6.32-431.84.1.el6.x86_64.rpm kernel-headers-2.6.32-431.84.1.el6.x86_64.rpm perf-2.6.32-431.84.1.el6.x86_64.rpm perf-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.5): Source: kernel-2.6.32-431.84.1.el6.src.rpm x86_64: kernel-debug-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-431.84.1.el6.x86_64.rpm perf-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm python-perf-2.6.32-431.84.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional TUS (v. 6.5): Source: kernel-2.6.32-431.84.1.el6.src.rpm x86_64: kernel-debug-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-431.84.1.el6.x86_64.rpm perf-debuginfo-2.6.32-431.84.1.el6.x86_64.rpm python-perf-2.6.32-431.84.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-431.84.1.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-2017-1000251 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/CVE-2017-1000251 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 iD8DBQFZuUEUXlSAg2UNWIIRAq+0AJ9kztVkgUYeOoN1WXsuROz238wLrQCguxUP HNMqta04rNazdeAQvj4gqFk= =po70 - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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