Published: 12/08/2015 Updated: 30/10/2018

CVSS v2 Base Score: 7.2 | Impact Score: 10 | Exploitability Score: 3.9

VMScore: 641

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Use-after-free vulnerability in QEMU in Xen 4.5.x and previous versions does not completely unplug emulated block devices, which allows local HVM guest users to gain privileges by unplugging a block device twice.

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fedoraproject fedora 21
fedoraproject fedora 22
xen xen
xen xen 4.5.1

Several security issues were fixed in QEMU ...

Debian Bug report logs - #794611 qemu: CVE-2015-5166: Use after free in QEMU/Xen block unplug protocol Package: src:qemu; Maintainer for src:qemu is Debian QEMU Team <pkg-qemu-devel@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Tue, 4 Aug 2015 20:27:02 UTC Severity: important ...

Debian Bug report logs - #793811 qemu: CVE-2015-5154: ide: atapi: heap overflow during I/O buffer memory access Package: src:qemu; Maintainer for src:qemu is Debian QEMU Team <pkg-qemu-devel@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Mon, 27 Jul 2015 18:12:02 UTC Severity: g ...

Debian Bug report logs - #795461 qemu: CVE-2015-3214: i8254: out-of-bounds memory access in pit_ioport_read function Package: src:qemu; Maintainer for src:qemu is Debian QEMU Team <pkg-qemu-devel@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Fri, 14 Aug 2015 08:12:10 UTC Severi ...

Debian Bug report logs - #793388 qemu: CVE-2015-5158: scsi stack buffer overflow Package: src:qemu; Maintainer for src:qemu is Debian QEMU Team <pkg-qemu-devel@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Thu, 23 Jul 2015 15:06:03 UTC Severity: important Tags: patch, security, ...

Debian Bug report logs - #794610 qemu: CVE-2015-5165: rtl8139 uninitialized heap memory information leakage to guest Package: src:qemu; Maintainer for src:qemu is Debian QEMU Team <pkg-qemu-devel@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Tue, 4 Aug 2015 20:24:02 UTC Severi ...

Debian Bug report logs - #795087 qemu: CVE-2015-5745: buffer overflow in virtio-serial Package: src:qemu; Maintainer for src:qemu is Debian QEMU Team <pkg-qemu-devel@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Mon, 10 Aug 2015 13:24:06 UTC Severity: normal Tags: fixed-upstrea ...

Debian Bug report logs - #796465 qemu: CVE-2015-5225: ui: vnc: heap memory corruption in vnc_refresh_server_surface Package: src:qemu; Maintainer for src:qemu is Debian QEMU Team <pkg-qemu-devel@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Fri, 21 Aug 2015 22:12:02 UTC Severit ...

A flaw has been found in the QEMU emulator built with IDE Emulation PCI PIIX3/4 support; the emulator is vulnerable to a use-after-free flaw, while writing data to an I/O port inside a guest This issue is specific to the Xen platform A privileged(CAP_SYS_RAWIO) guest user on the Xen platform could use this flaw to crash the QEMU instance or attem ...

QEMU may be fro-Xen out after two new bugs emerge

The Register • Simon Sharwood • 04 Aug 2015

Five guest-host escalation SNAFUs might be stretching the virtual friendship

The Xen project has revealed another two bugs in the QEMU hypervisor and is now wondering the extent to which it should support the buggy code. The first of the flaws, CVE-2015-5165, means “A guest may be able to read sensitive host-level data relating to itself which resides in the QEMU process” and impacts “All Xen systems running x86 HVM guests without stubdomains which have been configured with an emulated RTL8139 driver mode”. There's a workaround and the Xen team are asking you to ...

CVE-2015-5166

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