Description
IBM Power9 (AIX 7.1, 7.2, and VIOS 3.1) processors could allow a local user to obtain sensitive information from the data in the L1 cache under extenuating circumstances. IBM X-Force ID: 189296.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| IBM | VIOS | 3.1 | — |
| IBM | AIX | 7.1, 7.2 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 5.9.11-1 | — |
| Debian 13 | linux | 5.9.11-1 | — |
| Debian 12 | linux | 5.9.11-1 | — |
| Debian 9 | linux-4.19 | 4.19.160-2~deb9u1 | DLA-2483-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-56.62 | USN-4658-1 |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1032.33 | USN-4658-1 |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1034.35 | USN-4658-1 |
| Ubuntu 20.04 LTS | linux-gcp +1 | 5.4.0-1032.34 | USN-4658-1 |
| Ubuntu 20.04 LTS | linux-gke +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-hwe-5.8 | 5.8.0-31.33~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1028.29 | USN-4658-1 |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1023.26 | USN-4658-1 |
| Ubuntu 18.04 LTS | linux | 4.15.0-126.129 | USN-4660-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1088.93 | USN-4660-1 |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1032.33~18.04.1 | USN-4658-1 |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1100.111 | USN-4660-1 |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1034.35~18.04.1 | USN-4658-1 |
| Ubuntu 18.04 LTS | linux-dell300x | 4.15.0-1009.13 | — |
| Ubuntu 18.04 LTS | linux-gcp +10 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1088.101 | USN-4660-1 |
| Ubuntu 18.04 LTS | linux-gcp-5.4 +1 | 5.4.0-1032.34~18.04.1 | USN-4658-1 |
| Ubuntu 18.04 LTS | linux-gkeop-5.4 | 5.4.0-1007.8~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-56.62~18.04.1 | USN-4658-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1079.81 | USN-4660-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1103.114 | USN-4660-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1059.65 | USN-4660-1 |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1033.35 | USN-4658-1 |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1023.26~18.04.1 | USN-4658-1 |
| Ubuntu 18.04 LTS | linux-raspi2 +1 | 4.15.0-1074.79 | USN-4660-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1091.100 | USN-4660-1 |
| Ubuntu 16.04 LTS | linux | 4.4.0-197.229 | USN-4681-1, USN-4657-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1119.133 | USN-4681-1, USN-4657-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1088.93~16.04.1 | USN-4660-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1100.111~16.04.1 | USN-4660-1 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1088.101~16.04.1 | USN-4660-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-126.129~16.04.1 | USN-4660-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1085.94 | USN-4681-1, USN-4657-1 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1059.65~16.04.1 | USN-4660-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1143.153 | USN-4681-1, USN-4657-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1147.157 | USN-4681-1, USN-4657-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 20.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro FIPS 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-aws-fips | 5.4.0-1069.73+fips2 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1073.76+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1067.71~20.04.1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2033.34 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2015.17 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1048.55 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1051.57 | — |
| Ubuntu Pro 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1114.123~20.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1083.87 | USN-4681-1, USN-4657-1 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1102.113~14.04.1 | USN-4660-1 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-197.229~14.04.1 | USN-4681-1, USN-4657-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | perf +26 | 4.18.0-372.9.1.el8 | RHSA-2022:1988 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | perf +19 | 4.18.0-372.9.1.el8 | ALSA-2022:1988 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | kernel | 4.18.0-372.9.1.el8 | RLSA-2022:1988 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | kernel-azure +2 | 5.3.18-18.29.1 | SUSE-SU-2020:3713-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-24.43.2.9.17.3 | SUSE-SU-2020:3748-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-24.43.2 | SUSE-SU-2020:3748-1 |
| SLES 15 SP1 | kernel-azure +2 | 4.12.14-8.58.1 | SUSE-SU-2021:0097-1 |
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-197.78.1 | SUSE-SU-2021:3876-1, SUSE-SU-2021:0118-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-150.66.1 | SUSE-SU-2021:0438-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.41.1 | SUSE-SU-2021:0098-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.57.1 | SUSE-SU-2021:0133-1 |
| SLES 12 SP4 | kernel-syms +2 | 4.12.14-95.68.1 | SUSE-SU-2021:0434-1 |
Show 24 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | kernel-syms +2 | 4.4.180-94.138.1 | SUSE-SU-2021:3935-1, SUSE-SU-2021:0452-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_37 +1 | 1-4.3.1 | SUSE-SU-2021:3935-1, SUSE-SU-2021:0452-1 |
| SLES 11 SP4 | kernel-ec2 +8 | 3.0.101-108.120.1 | SUSE-SU-2021:14630-1 |
| SLES for SAP 15 SP1 | kernel-docs +3 | 4.12.14-197.102.2 | SUSE-SU-2021:3876-1 |
| SLES for SAP 15 SP1 | kernel-obs-build | 4.12.14-197.102.1 | SUSE-SU-2021:3876-1 |
| SLES for SAP 15 | kernel-docs +5 | 4.12.14-150.66.1 | SUSE-SU-2021:0438-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.41.1 | SUSE-SU-2021:0098-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.57.1 | SUSE-SU-2021:0133-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.68.1 | SUSE-SU-2021:0434-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.180-94.138.1 | SUSE-SU-2021:3935-1, SUSE-SU-2021:0452-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_37 +1 | 1-4.3.1 | SUSE-SU-2021:3935-1, SUSE-SU-2021:0452-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.25.1 | SUSE-SU-2020:3766-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-24.43.2 | SUSE-SU-2020:3748-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_8 | 1-5.3.3 | SUSE-SU-2020:3748-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.78.1 | SUSE-SU-2021:3876-1, SUSE-SU-2021:0118-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_21 +1 | 1-3.3.1 | SUSE-SU-2021:3876-1, SUSE-SU-2021:0118-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.66.1 | SUSE-SU-2021:0438-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_22 | 1-1.3.1 | SUSE-SU-2021:0438-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.57.1 | SUSE-SU-2021:0133-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_14 | 1-8.3.1 | SUSE-SU-2021:0133-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.68.1 | SUSE-SU-2021:0434-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_18 | 1-6.3.1 | SUSE-SU-2021:0434-1 |
| SLE HPC 15 SP1 | kernel-docs +3 | 4.12.14-197.102.2 | SUSE-SU-2021:3876-1 |
| SLE HPC 15 SP1 | kernel-obs-build | 4.12.14-197.102.1 | SUSE-SU-2021:3876-1 |
| SLE HPC 15 | kernel-docs +5 | 4.12.14-150.66.1 | SUSE-SU-2021:0438-1 |
| SUSE Real Time Module 15 SP2 | kernel-rt +3 | 5.3.18-19.1 | SUSE-SU-2020:3764-1 |
| SUSE Real Time Module 15 SP1 | kernel-rt +3 | 4.12.14-14.44.2 | SUSE-SU-2020:3798-1 |
| SUSE OpenStack Cloud Crowbar 9 | kernel-syms +2 | 4.12.14-95.68.1 | SUSE-SU-2021:0434-1 |
| SUSE OpenStack Cloud Crowbar 8 | kernel-syms +2 | 4.4.180-94.138.1 | SUSE-SU-2021:3935-1, SUSE-SU-2021:0452-1 |
| SUSE OpenStack Cloud Crowbar 8 | kgraft-patch-SLE12-SP3_Update_37 +1 | 1-4.3.1 | SUSE-SU-2021:3935-1, SUSE-SU-2021:0452-1 |
| SUSE OpenStack Cloud 9 | kernel-syms +2 | 4.12.14-95.68.1 | SUSE-SU-2021:0434-1 |
| SUSE OpenStack Cloud 8 | kernel-syms +2 | 4.4.180-94.138.1 | SUSE-SU-2021:3935-1, SUSE-SU-2021:0452-1 |
| SUSE OpenStack Cloud 8 | kgraft-patch-SLE12-SP3_Update_37 +1 | 1-4.3.1 | SUSE-SU-2021:3935-1, SUSE-SU-2021:0452-1 |
| SUSE HPE Helion OpenStack 8 | kernel-syms +2 | 4.4.180-94.138.1 | SUSE-SU-2021:3935-1, SUSE-SU-2021:0452-1 |
| SUSE HPE Helion OpenStack 8 | kgraft-patch-SLE12-SP3_Update_37 +1 | 1-4.3.1 | SUSE-SU-2021:3935-1, SUSE-SU-2021:0452-1 |
| SUSE Enterprise Storage 6 | kernel-docs +3 | 4.12.14-197.102.2 | SUSE-SU-2021:3876-1 |
| SUSE Enterprise Storage 6 | kernel-obs-build | 4.12.14-197.102.1 | SUSE-SU-2021:3876-1 |
| SUSE Enterprise Storage 5 | kernel-syms +2 | 4.4.180-94.138.1 | SUSE-SU-2021:0452-1 |
| SUSE Enterprise Storage 5 | kgraft-patch-SLE12-SP3_Update_37 | 1-4.3.1 | SUSE-SU-2021:0452-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.3 | kernel-debug +4 | 4.12.14-197.102.2 | openSUSE-SU-2021:3876-1 |
| openSUSE Leap 15.2 | kernel-default-base | 5.3.18-lp152.54.1.lp152.8.12.1 | openSUSE-SU-2020:2260-1, openSUSE-SU-2020:2161-1 |
| openSUSE Leap 15.2 | kernel-docs | 5.3.18-lp152.54.2 | openSUSE-SU-2020:2161-1 |
| openSUSE Leap 15.2 | kernel-rt +3 | 5.3.18-lp152.3.5.1 | openSUSE-SU-2021:0242-1 |
| openSUSE Leap 15.2 | kernel-syms +7 | 5.3.18-lp152.54.1 | openSUSE-SU-2020:2161-1 |
| openSUSE Leap 15.1 | kernel-debug +5 | 4.12.14-lp151.28.87.2 | openSUSE-SU-2021:0075-1, openSUSE-SU-2020:2193-1 |
| openSUSE Leap 15.1 | kernel-docs +2 | 4.12.14-lp151.28.87.1 | openSUSE-SU-2021:0075-1, openSUSE-SU-2020:2193-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-372.9.1.el8 | ELSA-2022-1988 |
| Oracle Linux 7 | kernel-uek-container | 4.14.35-2047.504.2.el7 | ELSA-2021-9308 |
| Oracle Linux 7 | perf +10 | 4.14.35-2047.504.2.el7uek | ELSA-2021-9305 |
Advisories 32
- ALSA-2022:1988 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2022:1988 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- USN-4681-1 linux, linux-aws, linux-kvm, linux-lts-xenial, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4657-1 linux, linux-aws, linux-azure, linux-kvm, linux-lts-trusty, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4658-1 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-kvm, linux-oracle, linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4660-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-4.15, linux-gcp, linux-gcp-4.15, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- DLA-2483-1 linux-4.19 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2022:1988 Important: kernel security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 4, 2026
- openSUSE-SU-2020:2260-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3764-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0242-1 Security update for RT kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0434-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3876-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0098-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:3935-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0133-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:2161-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0097-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:2193-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3798-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0075-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:14630-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3766-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3713-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0118-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3748-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0438-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:3876-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0452-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2022-1988 Important: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 17, 2022
- ELSA-2021-9308 Important: Unbreakable Enterprise kernel-container security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 15, 2021
- ELSA-2021-9305 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 14, 2021
References
- https://www.ibm.com/support/pages/node/6370729
- ibm-i-cve20204788-info-disc (189296) vdb-entry
- [oss-security] 20201120 CVE-2020-4788: Speculation on incompletely validated data on IBM Power9 mailing-list
- [oss-security] 20201123 Re: CVE-2020-4788: Speculation on incompletely validated data on IBM Power9 mailing-list
- FEDORA-2020-4700a73bd5 vendor-advisory
- FEDORA-2020-8c15928d23 vendor-advisory
- https://www.oracle.com/security-alerts/cpujul2022.html