-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Important: libvirt security update Advisory ID: RHSA-2018:1666-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:1666 Issue date: 2018-05-21 CVE Names: CVE-2018-3639 ===================================================================== 1. Summary: An update for libvirt is now available for Red Hat Enterprise Linux 6.6 Advanced Update Support and Red Hat Enterprise Linux 6.6 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. 6.6) - x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.6) - x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 6.6) - x86_64 Red Hat Enterprise Linux Server TUS (v. 6.6) - x86_64 3. Description: The libvirt library contains a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems. Security Fix(es): * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks. (CVE-2018-3639) Note: This is the libvirt side of the CVE-2018-3639 mitigation. Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) 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 After installing the updated packages, libvirtd will be restarted automatically. 5. Bugs fixed (https://bugzilla.redhat.com/): 1566890 - CVE-2018-3639 hw: cpu: speculative store bypass 6. Package List: Red Hat Enterprise Linux Server AUS (v. 6.6): Source: libvirt-0.10.2-46.el6_6.8.src.rpm x86_64: libvirt-0.10.2-46.el6_6.8.x86_64.rpm libvirt-client-0.10.2-46.el6_6.8.i686.rpm libvirt-client-0.10.2-46.el6_6.8.x86_64.rpm libvirt-debuginfo-0.10.2-46.el6_6.8.i686.rpm libvirt-debuginfo-0.10.2-46.el6_6.8.x86_64.rpm libvirt-devel-0.10.2-46.el6_6.8.i686.rpm libvirt-devel-0.10.2-46.el6_6.8.x86_64.rpm libvirt-python-0.10.2-46.el6_6.8.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 6.6): Source: libvirt-0.10.2-46.el6_6.8.src.rpm x86_64: libvirt-0.10.2-46.el6_6.8.x86_64.rpm libvirt-client-0.10.2-46.el6_6.8.i686.rpm libvirt-client-0.10.2-46.el6_6.8.x86_64.rpm libvirt-debuginfo-0.10.2-46.el6_6.8.i686.rpm libvirt-debuginfo-0.10.2-46.el6_6.8.x86_64.rpm libvirt-devel-0.10.2-46.el6_6.8.i686.rpm libvirt-devel-0.10.2-46.el6_6.8.x86_64.rpm libvirt-python-0.10.2-46.el6_6.8.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.6): x86_64: libvirt-debuginfo-0.10.2-46.el6_6.8.x86_64.rpm libvirt-lock-sanlock-0.10.2-46.el6_6.8.x86_64.rpm Red Hat Enterprise Linux Server Optional TUS (v. 6.6): x86_64: libvirt-debuginfo-0.10.2-46.el6_6.8.x86_64.rpm libvirt-lock-sanlock-0.10.2-46.el6_6.8.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-2018-3639 https://access.redhat.com/security/updates/classification/#important https://access.redhat.com/security/vulnerabilities/ssbd 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBWwQp29zjgjWX9erEAQgtqBAAlaEA7Ikhy0YbLOAgX7CaL8N/aObq41kf 36whrTlCY6YmGQWdCPJA9xAFubLErE06hbsRw625ka0AKyWg4ntmmHZx7WiI3Joy xB9Agex7PRPjCqbK5uQd/EVszk9u5UNwCi/6wvpI5KDfcOHt5VSSZdz+/IdMexeO bZMKdTJjO77AJOjP729TxNDjcD3/BvQlZ7Tcd7ltjGcg3z+YXxl1snBeFiP6LPM3 5jk/gnIxMIVW4p+v5X8fdra5E57snIF+Z7bWpcL0xP5grjTbJfNya9nfAa2nvfOC escVa2Zc6otxsvEQZH4BPU1uyB0ROQut+rINRGW8aCWKtHSg9L1nkNtFzyIxuW6g Ef6bi6Zr+kdcTKrQH7ef6VH49ut1n/ioKwBM058EONkA5KDvnAMJdEzxKYeD9XQS acXePZCt5WZBznQt6ZqRykQXVpyhItnyBGWrdEa/KYGYTlmrbrnfs/D+u+mGxL8C yMX8ude56nRKiQkPcXa52bcciyBi/oac3aeziffxbHbIMW7Xbb0WbFXFs5b2EBJu guFma13UH4v3b/uEYaNivEiMCBl/Nl3b85Le+JJMN5KygBBAMMgYk8EBpUmrGb+y YlmakKMzll2maLerTmjYjS/alfTqnWrYdfrTbUuVW+8rNETt6wA383uQxJxAM8Xf ZBI1kpCow1s= =nKU9 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce