SB2016082901 - SUSE Linux update for Linux Kernel Live Patch 1 for SLE 12 SP1

Description

This security bulletin contains information about 3 vulnerabilities.

1) Memory corruption (CVE-ID: CVE-2016-4997)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber

The vulnerability allows a local user to obtain elevated privileges on the target system.

The vulnerability exists due to a memory corruption error in the IPT_SO_SET_REPLACE compat_setsockopt() function.

Successful exploitation of this vulnerability may lead to arbitrary code execution with kernel-level privileges.

2) Heap-based buffer overflow (CVE-ID: CVE-2016-5829)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local attacker to cause DoS condition or gain elevated privileges on the target system.

The weakness exists in the hiddev_ioctl_usage function in drivers/hid/usbhid/hiddev.c  due to heap-based buffer overflow. A local attacker can cause the service to crash or gain elevated privileges via a crafted (1) HIDIOCGUSAGES or (2) HIDIOCSUSAGES ioctl call.

3) Race condition (CVE-ID: CVE-2016-6480)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows local users to provoke a denial of service.

The vulnerability exists due to parafunction of ioctl_send_fib. By altering "double fetch" vulnerability, a local user can provoke a denial of service.

Successful exploitation of this vulnerability will allow an attacker to cause a denial of service

Remediation

Install update from vendor's website.

References

• https://lists.opensuse.org/opensuse-security-announce/2016-08/msg00054.html