-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: kernel security update Advisory ID: RHSA-2017:0986-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:0986 Issue date: 2017-04-18 CVE Names: CVE-2017-2636 ===================================================================== 1. Summary: An update for kernel is now available for Red Hat Enterprise Linux 6.4 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. 6.4) - noarch, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.4) - 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. 6.4): Source: kernel-2.6.32-358.78.1.el6.src.rpm noarch: kernel-doc-2.6.32-358.78.1.el6.noarch.rpm kernel-firmware-2.6.32-358.78.1.el6.noarch.rpm x86_64: kernel-2.6.32-358.78.1.el6.x86_64.rpm kernel-debug-2.6.32-358.78.1.el6.x86_64.rpm kernel-debug-debuginfo-2.6.32-358.78.1.el6.x86_64.rpm kernel-debug-devel-2.6.32-358.78.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-358.78.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-358.78.1.el6.x86_64.rpm kernel-devel-2.6.32-358.78.1.el6.x86_64.rpm kernel-headers-2.6.32-358.78.1.el6.x86_64.rpm perf-2.6.32-358.78.1.el6.x86_64.rpm perf-debuginfo-2.6.32-358.78.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-358.78.1.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.4): Source: kernel-2.6.32-358.78.1.el6.src.rpm x86_64: kernel-debug-debuginfo-2.6.32-358.78.1.el6.x86_64.rpm kernel-debuginfo-2.6.32-358.78.1.el6.x86_64.rpm kernel-debuginfo-common-x86_64-2.6.32-358.78.1.el6.x86_64.rpm perf-debuginfo-2.6.32-358.78.1.el6.x86_64.rpm python-perf-2.6.32-358.78.1.el6.x86_64.rpm python-perf-debuginfo-2.6.32-358.78.1.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 . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFY9eUkXlSAg2UNWIIRAmFeAKCdpbP4Du+kPk5Yl2h14YrmM9uLHwCeKFBI UJoS8xX6O7HwjIyr4Vn+5Gs= =85YF -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce