Unscored severity · published Nov 23, 2012
CVE-2012-3495
The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index…
–
CVSS
0.4%
EPSS
No
On KEV
Description
The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XE
Xen · Xen
4.1.0; 4.1.1; 4.1.2; 4.1.3 · source: NVD
XE
Xenserver · Citrix
through 6.0.2; 5.0; 5.5; 5.6; 5.6; 5.6; +1 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2012-3495
CVE.org
https://www.cve.org/CVERecord?id=CVE-2012-3495
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00003.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00004.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00017.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00018.html
lists.xen.org
http://lists.xen.org/archives/html/xen-announce/2012-09/msg00001.html
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