Simultaneous Multi-threading (SMT) in processors can enable local users to exploit software vulnerable to timing attacks via a side-channel timing attack on 'port contention'.
http://www.securityfocus.com/bid/105897
https://access.redhat.com/errata/RHSA-2019:0483
https://access.redhat.com/errata/RHSA-2019:0651
https://access.redhat.com/errata/RHSA-2019:0652
https://access.redhat.com/errata/RHSA-2019:2125
https://access.redhat.com/errata/RHSA-2019:3929
https://access.redhat.com/errata/RHSA-2019:3931
https://access.redhat.com/errata/RHSA-2019:3932
https://access.redhat.com/errata/RHSA-2019:3933
https://access.redhat.com/errata/RHSA-2019:3935
https://eprint.iacr.org/2018/1060.pdf
https://github.com/bbbrumley/portsmash
https://lists.debian.org/debian-lts-announce/2018/11/msg00024.html
https://nodejs.org/en/blog/vulnerability/november-2018-security-releases/
https://security.gentoo.org/glsa/201903-10
https://security.netapp.com/advisory/ntap-20181126-0001/
https://support.f5.com/csp/article/K49711130?utm_source=f5support&utm_medium=RSS
https://usn.ubuntu.com/3840-1/
https://www.debian.org/security/2018/dsa-4348
https://www.debian.org/security/2018/dsa-4355
https://www.exploit-db.com/exploits/45785/
https://www.oracle.com/security-alerts/cpuapr2020.html
https://www.oracle.com/security-alerts/cpujan2020.html
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
Source: MITRE
Published: 2018-11-15
Updated: 2020-09-18
Type: CWE-203
Base Score: 1.9
Vector: AV:L/AC:M/Au:N/C:P/I:N/A:N
Impact Score: 2.9
Exploitability Score: 3.4
Severity: LOW
Base Score: 4.7
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Impact Score: 3.6
Exploitability Score: 1
Severity: MEDIUM