SB2015121703 - Ubuntu update for Linux kernel
Published: December 17, 2015
Security Bulletin ID
SB2015121703
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 secuirty vulnerabilities.
1) Improper input validation (CVE-ID: CVE-2015-7872)
The vulnerability allows a local attacker to cause DoS condition on the target system.The weakness exists in the key_gc_unused_keys function in security/keys/gc.c due to improper input validation. A local attacker can submit specially crafted keyctl commands and cause the service to crash.
2) Improper check or handling of exceptional conditions (CVE-ID: CVE-2015-8104)
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.