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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…
Medium4.9EPSS 0.44%
- Published
- Updated
- Reserved
- Assigned by
- mitre
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium4.9 | AV:L/AC:L/Au:N/C:N/I:N/A:C |
- EPSS (exploitation in 30 days)
- 0.44% · top 62% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.9.
Weakness
Affected products
n/a
- affected n/a
References (12)
- 75149 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- DSA-3286 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- SUSE-SU-2015:1156 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- SUSE-SU-2015:1643 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 1032569 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- SUSE-SU-2015:1206 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- SUSE-SU-2015:1157 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://support.citrix.com/article/CTX201145 (opens in a new tab)x_refsource_CONFIRMx_transferred
- SUSE-SU-2015:1045 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://xenbits.xen.org/xsa/advisory-136.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- GLSA-201604-03 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- SUSE-SU-2015:1042 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2015-4164)Record last updated .