SB2016101130 - Ubuntu update for Linux kernel (Xenial HWE)
Published: October 11, 2016 Updated: May 27, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Resource exhaustion (CVE-ID: CVE-2016-7039)
CWE-ID: CWE-400 - Resource exhaustion
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The weakness exists in the IP stack due to stack consumption. A remote attacker can trigger use of the GRO path for large crafted packets, as demonstrated by packets that contain only VLAN headers, and cause the service to crash.
2) “Use-after-free” error (CVE-ID: CVE-2016-6828)
CWE-ID: CWE-416 - Use After Free
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:P/U:Clear
The vulnerability allows local users to provoke a denial of service.
The vulnerability predicts TCP realization by a local user.
Successful exploitation of this vulnerability will allow an attacker to cause a denial of service.
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.