CVE-2015-5166

Severity: high (CVSS 7.2 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-08-12 · updated 2026-06-17
Weakness: CWE-264

Description

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

Affected products

Fedoraproject Fedora: 21, 22
xen: through 4.5.0; 4.5.1

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-September/165373.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167792.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167820.html
http://www.securityfocus.com/bid/76152
http://www.securitytracker.com/id/1033175
http://xenbits.xen.org/xsa/advisory-139.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/165373.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167792.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167820.html
http://www.securityfocus.com/bid/76152
http://www.securitytracker.com/id/1033175
http://xenbits.xen.org/xsa/advisory-139.html

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