VulnerabilityModified
CVE-2015-4164
The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set.
MEDIUM 4.9EPSS 0.44%
Does this matter?
Lower severity and a low EPSS score (0.44%). Track it; it rarely justifies an emergency change on its own.
Description
The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set.
- CVSS 2.0
- 4.9 MEDIUMAV:L/AC:L/Au:N/C:N/I:N/A:C
- EPSS
- 0.44% probability · 37th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-399
- Affected
- xen/xen
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00014.html
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00027.html
- http://support.citrix.com/article/CTX201145
- http://www.debian.org/security/2015/dsa-3286
- http://www.securityfocus.com/bid/75149
- http://www.securitytracker.com/id/1032569
- http://xenbits.xen.org/xsa/advisory-136.htmlVendor Advisory
- https://security.gentoo.org/glsa/201604-03
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00014.html
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00027.html
- http://support.citrix.com/article/CTX201145
- http://www.debian.org/security/2015/dsa-3286
- http://www.securityfocus.com/bid/75149
- http://www.securitytracker.com/id/1032569
- http://xenbits.xen.org/xsa/advisory-136.htmlVendor Advisory
- https://security.gentoo.org/glsa/201604-03
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.