UpHeron
All vulnerabilities

Servers and applications

CVE-2015-5307

The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c.

Severity
Medium 4.9
Published
16 Nov 2015
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
0.6% in the next 30 daysHigher than 47% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
CWE-399
Attack
Needs local access · No login needed
Attacker can
Take it down
CVSS vector
AV:L/AC:L/Au:N/C:N/I:N/A:C
Sources
NVD

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Version 4.6.6
  • Version 4.6.5
  • Version 4.6.4
  • Version 4.6.3
All 22 release lines
  • Version 4.3.0
  • Version 4.3.1
  • Version 4.3.2
  • Version 4.3.3
  • Version 4.3.4
  • Version 4.4.0
  • Version 4.4.1
  • Version 4.4.2
  • Version 4.4.3
  • Version 4.4.4
  • Version 4.5.0
  • Version 4.5.1
  • Version 4.5.2
  • Version 4.5.3
  • Version 4.5.5
  • Version 4.6.0
  • Version 4.6.1
  • Version 4.6.2
  • Version 4.6.3
  • Version 4.6.4
  • Version 4.6.5
  • Version 4.6.6

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2015-5307
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2015-5307