SB2016111502 - Red Hat update for kernel
Published: November 15, 2016
Security Bulletin ID
SB2016111502
Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Resource exhaustion (CVE-ID: CVE-2016-1583)
The vulnerability allows a local attacker to cause DoS condition and gain elevated privileges on the target system.The weakness exists in the ecryptfs_privileged_open function in fs/ecryptfs/kthread.c due to stack memory consumption. A local attacker can cause the service to crash and gain elevated privileges via vectors involving crafted mmap calls for /proc pathnames, leading to recursive pagefault handling.
2) Improper input validation (CVE-ID: CVE-2016-2143)
The vulnerability allows a local attacker to cause DoS condition on the target system.The weakness exists in the fork implementation on s390 platforms due to mishandling the case of four page-table levels. A local attacker can exploit arch/s390/include/asm/mmu_context.h and arch/s390/include/asm/pgalloc.h and cause the service to crash.
Remediation
Install update from vendor's website.