CVE-2017-12134

Description

The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information, cause a denial of service, or gain host OS privileges by leveraging incorrect block IO merge-ability calculation.

Category

8.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.18%
Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory xen.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://support.citrix.com/article/CTX225941 third party advisory patch
http://www.securitytracker.com/id/1039176 vdb entry third party advisory
http://xenbits.xen.org/xsa/advisory-229.html patch vendor advisory mitigation
http://www.debian.org/security/2017/dsa-3981 vendor advisory
https://usn.ubuntu.com/3655-1/ vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1477656 issue tracking patch mitigation third party advisory
https://security.gentoo.org/glsa/201801-14 vendor advisory
https://usn.ubuntu.com/3655-2/ vendor advisory
http://www.openwall.com/lists/oss-security/2017/08/15/4 mailing list third party advisory mitigation
http://www.securityfocus.com/bid/100343 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-12134?
CVE-2017-12134 has been scored as a high severity vulnerability.
How to fix CVE-2017-12134?
To fix CVE-2017-12134, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-12134 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-12134 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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