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Servers and applications

CVE-2015-8615

The hvm_set_callback_via function in arch/x86/hvm/irq.c in Xen 4.6 does not limit the number of printk console messages when logging the new callback method, which allows local HVM guest OS users to cause a denial of service via a large number of changes to the callback method (HVM_PARAM_CALLBACK_IRQ).

Severity
Medium 5.0
Published
8 Jan 2016
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.2% in the next 30 daysHigher than 67% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
CWE-254
Attack
Over the network · Needs a user account · No user action needed
Attacker can
Slow it down
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L
Sources
NVD

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Version 4.6.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2015-8615
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2015-8615