Unscored severity · published Oct 30, 2015
CVE-2015-7971
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…
–
CVSS
0.4%
EPSS
No
On KEV
Description
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XE
Xen · Xen
3.2.0; 3.2.1; 3.2.2; 3.2.3; 3.3.0; 3.3.1; +31 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-7971
CVE.org
https://www.cve.org/CVERecord?id=CVE-2015-7971
lists.fedoraproject.org
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html
lists.fedoraproject.org
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html
lists.fedoraproject.org
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-updates/2015-11/msg00063.html
support.citrix.com
http://support.citrix.com/article/CTX202404
www.debian.org
http://www.debian.org/security/2015/dsa-3414
More from Xen
10.0
CVE-2017-10921
The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and GNTMAP_host_map mapping, which allows guest OS users to cause a…
10.0
CVE-2017-10920
The grant-table feature in Xen through 4.8.x mishandles a GNTMAP_device_map and GNTMAP_host_map mapping, when followed by only a GNTMAP_host_map unmapping, which allows guest OS…
10.0
CVE-2017-10918
Xen through 4.8.x does not validate memory allocations during certain P2M operations, which allows guest OS users to obtain privileged host OS access, aka XSA-222
10.0
CVE-2017-10912
Xen through 4.8.x mishandles page transfer, which allows guest OS users to obtain privileged host OS access, aka XSA-217
10.0
CVE-2015-8104
The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB…