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USN-4191-1: QEMU vulnerabilities

14 November 2019

Several security issues were fixed in QEMU.

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Releases

Packages

  • qemu - Machine emulator and virtualizer

Details

It was discovered that the LSI SCSI adapter emulator implementation in QEMU
did not properly validate executed scripts. A local attacker could use this
to cause a denial of service. (CVE-2019-12068)

Sergej Schumilo, Cornelius Aschermann and Simon Wörner discovered that the
qxl paravirtual graphics driver implementation in QEMU contained a null
pointer dereference. A local attacker in a guest could use this to cause a
denial of service. (CVE-2019-12155)

Riccardo Schirone discovered that the QEMU bridge helper did not properly
validate network interface names. A local attacker could possibly use this
to bypass ACL restrictions. (CVE-2019-13164)

It was discovered that a heap-based buffer overflow existed in the SLiRP
networking implementation of QEMU. A local attacker in a guest could use
this to cause a denial of service or possibly execute arbitrary code in the
host. (CVE-2019-14378)

It was discovered that a use-after-free vulnerability existed in the SLiRP
networking implementation of QEMU. A local attacker in a guest could use
this to cause a denial of service. (CVE-2019-15890)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Related notices

  • USN-4191-2: qemu-system-aarch64, qemu-system-common, qemu-keymaps, qemu-kvm, qemu-system, qemu-system-misc, qemu, qemu-common, qemu-system-ppc, qemu-guest-agent, qemu-system-mips, qemu-user-static, qemu-utils, qemu-user, qemu-system-arm, qemu-system-x86, qemu-system-sparc