CVE-2020-10766
Publication date 10 June 2020
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
A logic bug flaw was found in Linux kernel before 5.8-rc1 in the implementation of SSBD. A bug in the logic handling allows an attacker with a local account to disable SSBD protection during a context switch when additional speculative execution mitigations are in place. This issue was introduced when the per task/process conditional STIPB switching was added on top of the existing SSBD switching. The highest threat from this vulnerability is to confidentiality.
From the Ubuntu Security Team
It was discovered that the Linux kernel did not correctly apply Speculative Store Bypass Disable (SSBD) mitigations in certain situations. A local attacker could possibly use this to expose sensitive information.
Status
Package | Ubuntu Release | Status |
---|---|---|
linux | 20.04 LTS focal |
Fixed 5.4.0-45.49
|
18.04 LTS bionic |
Fixed 4.15.0-115.116
|
|
16.04 LTS xenial |
Fixed 4.4.0-186.216
|
|
14.04 LTS trusty | Ignored | |
linux-aws | 20.04 LTS focal |
Fixed 5.4.0-1022.22
|
18.04 LTS bionic |
Fixed 4.15.0-1080.84
|
|
16.04 LTS xenial |
Fixed 4.4.0-1111.123
|
|
14.04 LTS trusty |
Fixed 4.4.0-1075.79
|
|
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 5.3.0-1032.34~18.04.2
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-aws-5.4 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.4.0-1022.22~18.04.1
|
|
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 4.15.0-1080.84~16.04.1
|
|
14.04 LTS trusty | Not in release | |
linux-azure | 20.04 LTS focal |
Fixed 5.4.0-1023.23
|
18.04 LTS bionic | Ignored | |
16.04 LTS xenial |
Fixed 4.15.0-1093.103~16.04.1
|
|
14.04 LTS trusty |
Fixed 4.15.0-1093.103~14.04.1
|
|
linux-azure-4.15 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 4.15.0-1093.103
|
|
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 5.3.0-1034.35~18.04.1
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-azure-5.4 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.4.0-1023.23~18.04.1
|
|
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 |
Fixed 5.4.0-1022.22
|
18.04 LTS bionic | Ignored | |
16.04 LTS xenial |
Fixed 4.15.0-1081.92~16.04.1
|
|
14.04 LTS trusty | Not in release | |
linux-gcp-4.15 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 4.15.0-1081.92
|
|
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 5.3.0-1032.34~18.04.1
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-gcp-5.4 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.4.0-1022.22~18.04.1
|
|
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 4.15.0-1067.70
|
|
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 5.0.0-1045.46
|
|
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 5.3.0-1032.34~18.04.1
|
|
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 5.3.0-64.58~18.04.1
|
|
16.04 LTS xenial |
Fixed 4.15.0-115.116~16.04.1
|
|
14.04 LTS trusty | Not in release | |
linux-hwe-5.4 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.4.0-45.49~18.04.2
|
|
16.04 LTS xenial | Not in release | |
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 |
Fixed 5.4.0-1021.21
|
18.04 LTS bionic |
Fixed 4.15.0-1072.73
|
|
16.04 LTS xenial |
Fixed 4.4.0-1077.84
|
|
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 |
Fixed 4.4.0-186.216~14.04.1
|
|
linux-oem | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 4.15.0-1094.104
|
|
16.04 LTS xenial | Ignored | |
14.04 LTS trusty | Not in release | |
linux-oem-5.6 | 20.04 LTS focal |
Fixed 5.6.0-1020.20
|
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 5.0.0-1065.70
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-oracle | 20.04 LTS focal |
Fixed 5.4.0-1022.22
|
18.04 LTS bionic |
Fixed 4.15.0-1051.55
|
|
16.04 LTS xenial |
Fixed 4.15.0-1051.55~16.04.1
|
|
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 5.3.0-1030.32~18.04.1
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-oracle-5.4 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.4.0-1022.22~18.04.1
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-raspi | 20.04 LTS focal |
Fixed 5.4.0-1016.17
|
18.04 LTS bionic | Not in release | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-raspi-5.4 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.4.0-1016.17~18.04.1
|
|
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 4.15.0-1068.72
|
|
16.04 LTS xenial |
Fixed 4.4.0-1136.145
|
|
14.04 LTS trusty | Not in release | |
linux-raspi2-5.3 | 20.04 LTS focal | Not in release |
18.04 LTS bionic |
Fixed 5.3.0-1030.32~18.04.2
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-riscv | 20.04 LTS focal |
Fixed 5.4.0-31.35
|
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 4.15.0-1084.92
|
|
16.04 LTS xenial |
Fixed 4.4.0-1140.148
|
|
14.04 LTS trusty | Not in release |
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Get Ubuntu ProSeverity score breakdown
Parameter | Value |
---|---|
Base score | 5.5 · Medium |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | None |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
References
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