Security update for kvm

SUSE Security Update: Security update for kvm
Announcement ID: SUSE-SU-2018:3975-1
Rating: moderate
References: #1106222 #1110910 #1111006 #1111010 #1111013 #1112185 #1114422
Cross-References: CVE-2018-10839 CVE-2018-15746 CVE-2018-17958 CVE-2018-17962 CVE-2018-17963 CVE-2018-18438 CVE-2018-18849
Affected Products:
  • SUSE Linux Enterprise Server 11-SP4

An update that fixes 7 vulnerabilities is now available.

Description:

This update for kvm fixes the following issues:
Security issues fixed:

  • CVE-2018-10839: Fixed NE2000 NIC emulation support that is vulnerable to an integer overflow, which could lead to buffer overflow issue. It could occur when receiving packets over the network. A user inside guest could use this flaw to crash the Qemu process resulting in DoS (bsc#1110910).
  • CVE-2018-15746: Fixed qemu-seccomp.c that might allow local OS guest users to cause a denial of service (guest crash) by leveraging mishandling of the seccomp policy for threads other than the main thread (bsc#1106222).
  • CVE-2018-17958: Fixed a Buffer Overflow in rtl8139_do_receive in hw/net/rtl8139.c because an incorrect integer data type is used (bsc#1111006).
  • CVE-2018-17962: Fixed a Buffer Overflow in pcnet_receive in hw/net/pcnet.c because an incorrect integer data type is used (bsc#1111010).
  • CVE-2018-17963: Fixed qemu_deliver_packet_iov in net/net.c that accepts packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact. (bsc#1111013)
  • CVE-2018-18849: Fixed an out of bounds memory access issue that was found in the LSI53C895A SCSI Host Bus Adapter emulation while writing a message in lsi_do_msgin. It could occur during migration if the 'msg_len' field has an invalid value. A user/process could use this flaw to crash the Qemu process resulting in DoS (bsc#1114422).
  • CVE-2018-18438: Fixed integer overflows because IOReadHandler and its associated functions use a signed integer data type for a size value (bnc#1112185).

Patch Instructions:

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Enterprise Server 11-SP4:
    zypper in -t patch slessp4-kvm-13891=1

Package List:

  • SUSE Linux Enterprise Server 11-SP4 (i586 s390x x86_64):
    • kvm-1.4.2-60.18.2

References: