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CVE-2022-26373

Published: 18 August 2022

Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow an authorized user to potentially enable information disclosure via local access.

From the Ubuntu Security Team

Pawan Kumar Gupta, Alyssa Milburn, Amit Peled, Shani Rehana, Nir Shildan and Ariel Sabba discovered that some Intel processors with Enhanced Indirect Branch Restricted Speculation (eIBRS) did not properly handle RET instructions after a VM exits. A local attacker could potentially use this to expose sensitive information.

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
buffer
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

jammy Needs triage

kinetic Needs triage

trusty Needs triage

upstream Needs triage

xenial Ignored
(out of standard support)
linux
Launchpad, Ubuntu, Debian
bionic Needed

focal
Released (5.4.0-128.144)
jammy
Released (5.15.0-50.56)
kinetic Not vulnerable
(5.19.0-18.18)
trusty Ignored
(was needed ESM criteria)
upstream
Released (6.0~rc1)
xenial Ignored
(was needed ESM criteria)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by 2b1299322016731d56807aa49254a5ea3080b6b3
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by ba6e31af2be96c4d0536f2152ed6f7b6c11bca47
linux-aws
Launchpad, Ubuntu, Debian
bionic Needed

focal
Released (5.4.0-1086.93)
jammy
Released (5.15.0-1021.25)
kinetic Not vulnerable
(5.19.0-1007.7)
trusty Ignored
(was needed ESM criteria)
upstream
Released (6.0~rc1)
xenial Ignored
(was needed ESM criteria)
linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-aws-5.3)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-aws-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-aws-5.13)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-aws-5.13)
xenial Does not exist

linux-aws-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-aws-5.15)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-aws-5.15)
xenial Does not exist

linux-aws-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.15.0-1021.25~20.04.1)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-aws-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-aws-5.4)
xenial Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1086.93~18.04.1)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-aws-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-aws-5.11)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-aws-5.11)
xenial Does not exist

linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Ignored
(was needed ESM criteria)
linux-azure
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-azure-5.3)
focal Pending
(5.4.0-1094.100)
jammy
Released (5.15.0-1021.26)
kinetic Not vulnerable
(5.19.0-1006.6)
trusty Ignored
(was needed ESM criteria)
upstream
Released (6.0~rc1)
xenial Ignored
(was needed ESM criteria)
linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-azure-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-azure-5.13)
trusty Does not exist

upstream Ignored
(superseded by linux-azure-5.13)
xenial Does not exist

linux-azure-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-azure-5.15)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-azure-5.15)
xenial Does not exist

linux-azure-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.15.0-1021.26~20.04.1)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-azure-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-azure-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-azure-5.4)
xenial Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
bionic Pending
(5.4.0-1094.100~18.04.1)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-azure-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-azure-5.11)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-azure-5.11)
xenial Does not exist

linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-azure-5.3)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-azure-fde
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.4.0-1092.97+cvm1.1)
jammy
Released (5.15.0-1021.26)
kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-azure-fde-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needed

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-bluefield
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.4.0-1047.52)
jammy Not vulnerable
(5.15.0-1009.11)
kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-dell300x
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-fips
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

hirsute Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Ignored
(out of standard support)
linux-gcp
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-gcp-5.3)
focal
Released (5.4.0-1090.98)
jammy
Released (5.15.0-1019.25)
kinetic Not vulnerable
(5.19.0-1006.6)
trusty Does not exist

upstream
Released (6.0~rc1)
xenial Ignored
(was needed ESM criteria)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-gcp-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-gcp-5.13)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-gcp-5.13)
xenial Does not exist

linux-gcp-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-gcp-5.15)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-gcp-5.15)
xenial Does not exist

linux-gcp-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Pending
(5.15.0-1021.28~20.04.1)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-gcp-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-gcp-5.4)
xenial Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
bionic Pending
(5.4.0-1092.101~18.04.1)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-gcp-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-gcp-5.11)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-gcp-5.11)
xenial Does not exist

linux-gke
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.4.0-1084.90)
jammy
Released (5.15.0-1017.20)
kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Ignored
(reached end of standard support)
linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-gke-5.3)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-gke-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Pending
(5.15.0-1019.23~20.04.1)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-gke-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-gke-5.4)
xenial Does not exist

linux-gke-5.4
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-gkeop
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.4.0-1054.57)
jammy
Released (5.15.0-1004.6)
kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-gkeop-5.4
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic Ignored
(replaced by linux-hwe-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Ignored
(was needed ESM criteria)
linux-hwe-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-hwe-5.13)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-hwe-5.13)
xenial Does not exist

linux-hwe-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-hwe-5.15)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-hwe-5.15)
xenial Does not exist

linux-hwe-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.15.0-50.56~20.04.1)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-hwe-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-128.144~18.04.1)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-hwe-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-hwe-5.11)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-hwe-5.11)
xenial Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-hwe-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Ignored
(superseded by linux-hwe)
linux-ibm
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.4.0-1034.38)
jammy
Released (5.15.0-1015.17)
kinetic Not vulnerable
(5.19.0-1006.6)
trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-ibm-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1034.38~18.04.1)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-intel-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-intel-iotg
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy
Released (5.15.0-1017.22)
kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-intel-iotg-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Pending
(5.15.0-1017.22~20.04.1)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
bionic Needed

focal
Released (5.4.0-1076.81)
jammy
Released (5.15.0-1019.23)
kinetic Not vulnerable
(5.19.0-1006.6)
trusty Does not exist

upstream
Released (6.0~rc1)
xenial Ignored
(was needed ESM criteria)
linux-lowlatency
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy
Released (5.15.0-50.56)
kinetic Not vulnerable
(5.19.0-1005.5)
trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-lowlatency-hwe-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.15.0-50.56~20.04.1)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Ignored
(was needed ESM criteria)
upstream
Released (6.0~rc1)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Ignored
(superseded by linux-hwe)
linux-oem-5.10
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-oem-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-oem-5.14)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-oem-5.14)
xenial Does not exist

linux-oem-5.14
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Needed

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-oem-5.17
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Does not exist

jammy Needed

kinetic Needs triage

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-oem-5.6
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic Ignored
(was needs-triage now end-of-life)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic Needed

focal
Released (5.4.0-1084.92)
jammy
Released (5.15.0-1019.24)
kinetic Not vulnerable
(5.19.0-1006.6)
trusty Does not exist

upstream
Released (6.0~rc1)
xenial Ignored
(was needed ESM criteria)
linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-oracle-5.3)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-oracle-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-oracle-5.13)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-oracle-5.13)
xenial Does not exist

linux-oracle-5.13
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(was needs-triage now end-of-life)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-oracle-5.15
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Pending
(5.15.0-1019.24~20.04.1)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-oracle-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-oracle-5.4)
xenial Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1084.92~18.04.1)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-oracle-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-oracle-5.11)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-oracle-5.11)
xenial Does not exist

linux-raspi
Launchpad, Ubuntu, Debian
bionic Does not exist

focal
Released (5.4.0-1071.81)
jammy
Released (5.15.0-1016.18)
kinetic Not vulnerable
(5.19.0-1002.6)
trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
bionic
Released (5.4.0-1071.81~18.04.1)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
bionic Needed

focal Ignored
(replaced by linux-raspi)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Ignored
(end of standard support)
linux-raspi2-5.3
Launchpad, Ubuntu, Debian
bionic Ignored
(superseded by linux-raspi-5.4)
focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-raspi2-5.4)
xenial Does not exist

linux-riscv
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-riscv-5.8)
jammy
Released (5.15.0-1020.23)
kinetic Not vulnerable
(5.19.0-1003.3)
trusty Does not exist

upstream
Released (6.0~rc1)
xenial Does not exist

linux-riscv-5.11
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-riscv-5.13)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-riscv-5.13)
xenial Does not exist

linux-riscv-5.8
Launchpad, Ubuntu, Debian
bionic Does not exist

focal Ignored
(superseded by linux-riscv-5.11)
jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream Ignored
(superseded by linux-riscv-5.11)
xenial Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
bionic Needed

focal Does not exist

jammy Does not exist

kinetic Does not exist

trusty Does not exist

upstream
Released (6.0~rc1)
xenial Ignored
(end of standard support)