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CVE-2015-7971

Date: October 30, 2015

Xen 3.2.x through 4.6.x does not limit the number of printk console messages when logging certain pmu and profiling hypercalls, which allows local guests to cause a denial of service via a sequence of crafted (1) HYPERCALL_xenoprof_op hypercalls, which are not properly handled in the do_xenoprof_op function in common/xenoprof.c, or (2) HYPERVISOR_xenpmu_op hypercalls, which are not properly handled in the do_xenpmu_op function in arch/x86/cpu/vpmu.c.

Language: C

Severity Score

Related Resources (13)

https://nvd.nist.gov/vuln/detail/CVE-2015-7971
http://www.securitytracker.com/id/1034035
http://xenbits.xen.org/xsa/advisory-152.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html
https://security.gentoo.org/glsa/201604-03
http://www.debian.org/security/2015/dsa-3414
http://lists.opensuse.org/opensuse-updates/2015-11/msg00063.html
https://access.redhat.com/security/cve/CVE-2015-7971
http://www.securityfocus.com/bid/77363
http://support.citrix.com/article/CTX202404
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html
https://www.mend.io/vulnerability-database/CVE-2015-7971

Severity Score

Weakness Type (CWE)

Data Handling

CWE-19

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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