SB2015111102 - Fedora 21 update for xen
Published: November 11, 2015 Updated: April 24, 2025
Security Bulletin ID
SB2015111102
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Improper check or handling of exceptional conditions (CVE-ID: CVE-2015-5307)
CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows an adjacent attacker to cause DoS condition on the target system.
The weakness exists in the KVM subsystem due to many #AC (aka Alignment Check) exceptions, related to svm.c and vmx.c. An adjacent attacker can cause the service to crash.
2) Improper check or handling of exceptional conditions (CVE-ID: CVE-2015-8104)
CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows an adjacent attacker to cause DoS condition on the target system.
The weakness exists in the KVM subsystem due to many #DB (aka Debug) exceptions, related to svm.c. An adjacent attacker can cause the service to crash.
Remediation
Install update from vendor's website.