Vulnerability in Xen
CVE-2015-7970
The p2m_pod_emergency_sweep function in arch/x86/mm/p2m-pod.c in Xen 3.4.x, 3.5.x, and 3.6.x is not preemptible, which allows local x86 HVM guest administrators to cause a denial of service (CPU consumption and possibly reboot) via crafted memory contents that triggers a "time-consuming linear scan," related to Populate-on-Demand.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.9 (Medium). Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.004 (35.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 35.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Xen — versions 3.4.0, 3.4.1, 3.4.2
Weakness classification (CWE)
References
- www.securityfocus.com/bid/77362 (vdb-entry)
- support.citrix.com/article/CTX202404
- lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html (vendor-advisory)
- lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html (vendor-advisory)
- lists.opensuse.org/opensuse-updates/2015-12/msg00053.html (vendor-advisory)
- www.securitytracker.com/id/1034034 (vdb-entry)
- xenbits.xen.org/xsa/advisory-150.html (Vendor Advisory)
- www.debian.org/security/2015/dsa-3414 (vendor-advisory)
- lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html (vendor-advisory)
- security.gentoo.org/glsa/201604-03 (vendor-advisory)