Synopsis

Important: qemu-kvm security update

Type/Severity

Security Advisory: Important

Topic

An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.

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.

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: slirp: heap buffer overflow while reassembling fragmented datagrams (CVE-2018-11806)
  
• QEMU: slirp: heap buffer overflow in tcp_emu() (CVE-2019-6778)
  
• QEMU: ne2000: integer overflow leads to buffer overflow issue (CVE-2018-10839)
  
• QEMU: pcnet: integer overflow leads to buffer overflow (CVE-2018-17962)
  
• QEMU: qxl: null pointer dereference while releasing spice resources (CVE-2019-12155)
  

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

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.

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64

Fixes

• BZ - 1581013 - CVE-2018-10839 QEMU: ne2000: integer overflow leads to buffer overflow issue
• BZ - 1586245 - CVE-2018-11806 QEMU: slirp: heap buffer overflow while reassembling fragmented datagrams
• BZ - 1636773 - CVE-2018-17962 QEMU: pcnet: integer overflow leads to buffer overflow
• BZ - 1664205 - CVE-2019-6778 QEMU: slirp: heap buffer overflow in tcp_emu()
• BZ - 1712670 - CVE-2019-12155 QEMU: qxl: null pointer dereference while releasing spice resources

CVEs

• CVE-2018-10839
• CVE-2018-11806
• CVE-2018-17962
• CVE-2019-6778
• CVE-2019-12155

References

• https://access.redhat.com/security/updates/classification/#important

Red Hat Enterprise Linux Server 6

SRPM
qemu-kvm-0.12.1.2-2.506.el6_10.5.src.rpm	SHA-256: bc826bbf3c94ec2dcb1498405f366595d83292acbd570dc35bc2c6bb112eedb5
x86_64
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: e6f236a0f725a056411045f0d481547eb179aa513315f2fa84f9dc7be76ef548
qemu-img-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: bf9a70fc40cc14afa76d3b9488a088c22b7f2cbbe914db4354bb31e594ed7dce
qemu-kvm-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: 72f9d5f2ba728d5a017a7e90bb295e2fa087bcaf44b9fa88f9cad3eb8cb433f8
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: f19f83025a87702a3bf3264ef43fc448bd8979a79d8d5e72668abe381899657a
qemu-kvm-tools-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: 8f6890fe148469fd02ce477ebb5be5a62bb66c0b65d8997d64c15af47b31b5c3
i386
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.i686.rpm	SHA-256: 231a521fa84527436389106675f775f16aeb46673d6bce06c3b8dd93546e524b
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.i686.rpm	SHA-256: 9acff9e329275c7ceccb9ac6de1dcf2ac81355ffb2d0d10e6d93e75cc6ca5bdb

Red Hat Enterprise Linux Workstation 6

SRPM
qemu-kvm-0.12.1.2-2.506.el6_10.5.src.rpm	SHA-256: bc826bbf3c94ec2dcb1498405f366595d83292acbd570dc35bc2c6bb112eedb5
x86_64
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: e6f236a0f725a056411045f0d481547eb179aa513315f2fa84f9dc7be76ef548
qemu-img-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: bf9a70fc40cc14afa76d3b9488a088c22b7f2cbbe914db4354bb31e594ed7dce
qemu-kvm-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: 72f9d5f2ba728d5a017a7e90bb295e2fa087bcaf44b9fa88f9cad3eb8cb433f8
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: f19f83025a87702a3bf3264ef43fc448bd8979a79d8d5e72668abe381899657a
qemu-kvm-tools-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: 8f6890fe148469fd02ce477ebb5be5a62bb66c0b65d8997d64c15af47b31b5c3
i386
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.i686.rpm	SHA-256: 231a521fa84527436389106675f775f16aeb46673d6bce06c3b8dd93546e524b
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.i686.rpm	SHA-256: 9acff9e329275c7ceccb9ac6de1dcf2ac81355ffb2d0d10e6d93e75cc6ca5bdb

Red Hat Enterprise Linux Desktop 6

SRPM
qemu-kvm-0.12.1.2-2.506.el6_10.5.src.rpm	SHA-256: bc826bbf3c94ec2dcb1498405f366595d83292acbd570dc35bc2c6bb112eedb5
x86_64
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: e6f236a0f725a056411045f0d481547eb179aa513315f2fa84f9dc7be76ef548
qemu-img-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: bf9a70fc40cc14afa76d3b9488a088c22b7f2cbbe914db4354bb31e594ed7dce
qemu-kvm-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: 72f9d5f2ba728d5a017a7e90bb295e2fa087bcaf44b9fa88f9cad3eb8cb433f8
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: f19f83025a87702a3bf3264ef43fc448bd8979a79d8d5e72668abe381899657a
qemu-kvm-tools-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: 8f6890fe148469fd02ce477ebb5be5a62bb66c0b65d8997d64c15af47b31b5c3
i386
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.i686.rpm	SHA-256: 231a521fa84527436389106675f775f16aeb46673d6bce06c3b8dd93546e524b
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.i686.rpm	SHA-256: 9acff9e329275c7ceccb9ac6de1dcf2ac81355ffb2d0d10e6d93e75cc6ca5bdb

Red Hat Enterprise Linux for Power, big endian 6

SRPM
qemu-kvm-0.12.1.2-2.506.el6_10.5.src.rpm	SHA-256: bc826bbf3c94ec2dcb1498405f366595d83292acbd570dc35bc2c6bb112eedb5
ppc64
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.ppc64.rpm	SHA-256: 2c49fe26317330e4ae62ca5b5e87adcafd72b837e395fe8f2dfe0c0a06f4b819
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.ppc64.rpm	SHA-256: 034751f460a9862c361d3c16b36c6b37fc93845652c2e0a67e798df02d4cf485

Red Hat Enterprise Linux for Scientific Computing 6

SRPM
qemu-kvm-0.12.1.2-2.506.el6_10.5.src.rpm	SHA-256: bc826bbf3c94ec2dcb1498405f366595d83292acbd570dc35bc2c6bb112eedb5
x86_64
qemu-guest-agent-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: e6f236a0f725a056411045f0d481547eb179aa513315f2fa84f9dc7be76ef548
qemu-img-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: bf9a70fc40cc14afa76d3b9488a088c22b7f2cbbe914db4354bb31e594ed7dce
qemu-kvm-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: 72f9d5f2ba728d5a017a7e90bb295e2fa087bcaf44b9fa88f9cad3eb8cb433f8
qemu-kvm-debuginfo-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: f19f83025a87702a3bf3264ef43fc448bd8979a79d8d5e72668abe381899657a
qemu-kvm-tools-0.12.1.2-2.506.el6_10.5.x86_64.rpm	SHA-256: 8f6890fe148469fd02ce477ebb5be5a62bb66c0b65d8997d64c15af47b31b5c3