X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Wed, 13 Sep 2017 14:10:51 +0000 (UTC) -----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 . 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----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce