CVE-2020-8647
Publication date 6 February 2020
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the vc_do_resize function in drivers/tty/vt/vt.c.
From the Ubuntu Security Team
It was discovered that the virtual terminal implementation in the Linux kernel did not properly handle resize events. A local attacker could use this to expose sensitive information.
Status
Package | Ubuntu Release | Status |
---|---|---|
linux | 20.04 LTS focal |
Not affected
|
18.04 LTS bionic |
Fixed 4.15.0-99.100
|
|
16.04 LTS xenial |
Fixed 4.4.0-178.208
|
|
14.04 LTS trusty | Ignored | |
linux-aws | 20.04 LTS focal |
Not affected
|
18.04 LTS bionic |
Fixed 4.15.0-1066.70
|
|
16.04 LTS xenial |
Fixed 4.4.0-1106.117
|
|
14.04 LTS trusty | Ignored | |
linux-aws-5.0 | 20.04 LTS focal | Not in release |
18.04 LTS bionic | Ignored | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-aws-5.3 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.3.0-1017.18~18.04.1
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-aws-hwe | 20.04 LTS focal | Not in release |
18.04 LTS bionic | Not in release | |
16.04 LTS xenial |
Fixed 4.15.0-1066.70~16.04.1
|
|
14.04 LTS trusty | Not in release | |
linux-azure | 20.04 LTS focal |
Not affected
|
18.04 LTS bionic | Ignored | |
16.04 LTS xenial |
Fixed 4.15.0-1082.92~16.04.1
|
|
14.04 LTS trusty | Ignored | |
linux-azure-4.15 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Not affected
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-azure-5.3 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.3.0-1020.21~18.04.1
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-azure-edge | 20.04 LTS focal | Not in release |
18.04 LTS bionic | Ignored | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-gcp | 20.04 LTS focal |
Not affected
|
18.04 LTS bionic | Ignored | |
16.04 LTS xenial |
Fixed 4.15.0-1061.65
|
|
14.04 LTS trusty | Not in release | |
linux-gcp-4.15 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Not affected
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-gcp-5.3 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.3.0-1018.19~18.04.1
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-gcp-edge | 20.04 LTS focal | Not in release |
18.04 LTS bionic | Ignored | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-gke-4.15 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 4.15.0-1058.61
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-gke-5.0 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.0.0-1035.36
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-gke-5.3 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.3.0-1018.19~18.04.1
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-hwe | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.3.0-51.44~18.04.2
|
|
16.04 LTS xenial |
Fixed 4.15.0-99.100~16.04.1
|
|
14.04 LTS trusty | Not in release | |
linux-hwe-edge | 20.04 LTS focal | Not in release |
18.04 LTS bionic | Ignored | |
16.04 LTS xenial | Ignored | |
14.04 LTS trusty | Not in release | |
linux-kvm | 20.04 LTS focal |
Not affected
|
18.04 LTS bionic |
Fixed 4.15.0-1059.60
|
|
16.04 LTS xenial |
Fixed 4.4.0-1070.77
|
|
14.04 LTS trusty | Not in release | |
linux-lts-trusty | 20.04 LTS focal | Not in release |
18.04 LTS bionic | Not in release | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-lts-xenial | 20.04 LTS focal | Not in release |
18.04 LTS bionic | Not in release | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Ignored | |
linux-oem | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 4.15.0-1080.90
|
|
16.04 LTS xenial | Ignored | |
14.04 LTS trusty | Not in release | |
linux-oem-5.6 | 20.04 LTS focal |
Not affected
|
18.04 LTS bionic | Not in release | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-oem-osp1 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.0.0-1050.55
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-oracle | 20.04 LTS focal |
Not affected
|
18.04 LTS bionic |
Fixed 4.15.0-1038.42
|
|
16.04 LTS xenial |
Fixed 4.15.0-1038.42~16.04.1
|
|
14.04 LTS trusty | Not in release | |
linux-oracle-5.0 | 20.04 LTS focal | Not in release |
18.04 LTS bionic | Ignored | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-oracle-5.3 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.3.0-1016.18~18.04.1
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-raspi | 20.04 LTS focal |
Not affected
|
18.04 LTS bionic | Not in release | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-raspi2 | 20.04 LTS focal | Ignored |
18.04 LTS bionic |
Fixed 4.15.0-1061.65
|
|
16.04 LTS xenial |
Fixed 4.4.0-1132.141
|
|
14.04 LTS trusty | Not in release | |
linux-raspi2-5.3 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.3.0-1023.25~18.04.1
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-riscv | 20.04 LTS focal |
Not affected
|
18.04 LTS bionic | Not in release | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-snapdragon | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 4.15.0-1077.84
|
|
16.04 LTS xenial |
Fixed 4.4.0-1136.144
|
|
14.04 LTS trusty | Not in release |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 6.1 · Medium |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | Low |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H |
References
Related Ubuntu Security Notices (USN)
- LSN-0066-1
- Kernel Live Patch Security Notice
- 1 May 2020
- LSN-0068-1
- Kernel Live Patch Security Notice
- 9 June 2020