-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Low: qemu-kvm security, bug fix, and enhancement update Advisory ID: RHSA-2018:0816-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:0816 Issue date: 2018-04-10 CVE Names: CVE-2017-13672 CVE-2017-13711 CVE-2017-15124 CVE-2017-15268 CVE-2018-5683 ===================================================================== 1. Summary: An update for qemu-kvm is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Low. 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 Client (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 3. Description: Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Security Fix(es): * Qemu: vga: OOB read access during display update (CVE-2017-13672) * Qemu: Slirp: use-after-free when sending response (CVE-2017-13711) * Qemu: memory exhaustion through framebuffer update request message in VNC server (CVE-2017-15124) * Qemu: I/O: potential memory exhaustion via websock connection to VNC (CVE-2017-15268) * Qemu: Out-of-bounds read in vga_draw_text routine (CVE-2018-5683) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Red Hat would like to thank David Buchanan for reporting CVE-2017-13672; Wjjzhang (Tencent.com) for reporting CVE-2017-13711; and Jiang Xin and Lin ZheCheng for reporting CVE-2018-5683. The CVE-2017-15124 issue was discovered by Daniel Berrange (Red Hat). Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.5 Release Notes linked from the References section. 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 this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1411490 - [RFE] Kernel address space layout randomization [KASLR] support (qemu-kvm) 1417864 - Qemu-kvm starts with unspecified port 1435352 - qemu started with "-vnc none,..." doesn't support any VNC authentication 1450396 - Add support for AMD EPYC processors 1455451 - VM with pty based serial console hangs if PTS buffer is full 1459725 - Prevent qemu-img resize from causing "Active L1 table too large" 1460872 - Aborted(core dumped) when booting guest with "-netdev tap....vhost=on,queues=32" 1461672 - qemu-img core dumped when create external snapshot through ssh protocol without specifying image size 1470244 - reboot leads to shutoff of qemu-kvm-vm if i6300esb-watchdog set to poweroff 1473536 - Hangs in serial console under qemu 1476641 - ui/vnc_keysym.h is very out of date and does not correctly support many Eastern European keyboards 1486400 - CVE-2017-13711 Qemu: Slirp: use-after-free when sending response 1486560 - CVE-2017-13672 Qemu: vga: OOB read access during display update 1491434 - KVM leaks file descriptors when attaching and detaching virtio-scsi block devices 1492559 - virtio-blk mutiwrite merge causes too big IO 1494181 - Backport vGPU support to qemu-kvm 1496879 - CVE-2017-15268 Qemu: I/O: potential memory exhaustion via websock connection to VNC 1511802 - Regression in QEMU handling for sub-page MMIO BARs for vfio-pci devices 1520793 - Do not build non-x86_64 subpackages 1525195 - CVE-2017-15124 Qemu: memory exhaustion through framebuffer update request message in VNC server 1530356 - CVE-2018-5683 Qemu: Out-of-bounds read in vga_draw_text routine 1536883 - [abrt] [faf] qemu-kvm: unknown function(): /usr/libexec/qemu-kvm killed by 6 1538866 - qemu will coredump after executing info qtree 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: qemu-kvm-1.5.3-156.el7.src.rpm x86_64: qemu-img-1.5.3-156.el7.x86_64.rpm qemu-kvm-1.5.3-156.el7.x86_64.rpm qemu-kvm-common-1.5.3-156.el7.x86_64.rpm qemu-kvm-debuginfo-1.5.3-156.el7.x86_64.rpm qemu-kvm-tools-1.5.3-156.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): Source: qemu-kvm-1.5.3-156.el7.src.rpm x86_64: qemu-img-1.5.3-156.el7.x86_64.rpm qemu-kvm-1.5.3-156.el7.x86_64.rpm qemu-kvm-common-1.5.3-156.el7.x86_64.rpm qemu-kvm-debuginfo-1.5.3-156.el7.x86_64.rpm qemu-kvm-tools-1.5.3-156.el7.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: qemu-kvm-1.5.3-156.el7.src.rpm x86_64: qemu-img-1.5.3-156.el7.x86_64.rpm qemu-kvm-1.5.3-156.el7.x86_64.rpm qemu-kvm-common-1.5.3-156.el7.x86_64.rpm qemu-kvm-debuginfo-1.5.3-156.el7.x86_64.rpm qemu-kvm-tools-1.5.3-156.el7.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: qemu-kvm-1.5.3-156.el7.src.rpm x86_64: qemu-img-1.5.3-156.el7.x86_64.rpm qemu-kvm-1.5.3-156.el7.x86_64.rpm qemu-kvm-common-1.5.3-156.el7.x86_64.rpm qemu-kvm-debuginfo-1.5.3-156.el7.x86_64.rpm qemu-kvm-tools-1.5.3-156.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-2017-13672 https://access.redhat.com/security/cve/CVE-2017-13711 https://access.redhat.com/security/cve/CVE-2017-15124 https://access.redhat.com/security/cve/CVE-2017-15268 https://access.redhat.com/security/cve/CVE-2018-5683 https://access.redhat.com/security/updates/classification/#low https://access.redhat.com/documentation/en-US/red_hat_enterprise_linux/7/html/7.5_release_notes/index.html 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 iD8DBQFazHlaXlSAg2UNWIIRAvaHAKCMh3k5k9HwWHsGiLwADDZYWLBQTwCfYiYn K+qXkCmk8CnU6Guh2vLgf4Q= =Lr+n -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce