LSN-0071-1: Kernel Live Patch Security Notice
10 September 2020
Several security issues were fixed in the kernel.
Releases
Software Description
- aws - Linux kernel for Amazon Web Services (AWS) systems - (>= 4.15.0-1054)
- generic-4.15 - Linux kernel - (>= 4.15.0-69)
- lowlatency-4.15 - Linux kernel - (>= 4.15.0-69)
- oem - Linux kernel for OEM systems - (>= 4.15.0-1063)
Details
Or Cohen discovered that the AF_PACKET implementation in the Linux kernel
did not properly perform bounds checking in some situations. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2020-14386)
Checking update status
The problem can be corrected in these Livepatch versions:
| Kernel type | 18.04 |
|---|---|
| aws | 71.1 |
| generic-4.15 | 71.1 |
| lowlatency-4.15 | 71.1 |
| oem | 71.1 |
To check your kernel type and Livepatch version, enter this command:
canonical-livepatch status