SB2017121446 - SUSE Linux update for the Linux Kernel
Published: December 14, 2017
Security Bulletin ID
SB2017121446
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) Privilege escalation (CVE-ID: CVE-2017-15649)
The vulnerability allows a local attacker to gain elevated privileges on the target system.The weakness exists in net/packet/af_packet.c due to race condition (involving fanout_add and packet_do_bind. A local attacker can supply specially crafted system calls, trigger mishandling of packet_fanout data structures, trigger use-after-free error and gain root privileges.
2) Use-after-free error (CVE-ID: CVE-2017-6346)
The vulnerability allows a local attacker to cause DoS condition on the target system.The weakness exists due to race condition in net/packet/af_packet.c. A local attacker can use a multithreaded application, make PACKET_FANOUT setsockopt system calls, trigger use-after-free error and cause the system to crash.
Remediation
Install update from vendor's website.