CVE-2015-7812

Severity: medium (CVSS 4.9 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: 2015-11-17 · updated 2026-06-17
Weakness: CWE-254

Description

The hypercall_create_continuation function in arch/arm/domain.c in Xen 4.4.x through 4.6.x allows local guest users to cause a denial of service (host crash) via a preemptible hypercall to the multicall interface.

Affected products

xen: 4.4.0, 4.4.1, 4.4.2, 4.4.3, 4.5.0, 4.5.1 (+2)

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html
http://www.debian.org/security/2015/dsa-3414
http://www.securitytracker.com/id/1034031
http://xenbits.xen.org/xsa/advisory-145.html
https://security.gentoo.org/glsa/201604-03
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html
http://www.debian.org/security/2015/dsa-3414
http://www.securitytracker.com/id/1034031

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