Description
The Linux kernel before 5.4.1 on powerpc allows Information Exposure because the Spectre-RSB mitigation is not in place for all applicable CPUs, aka CID-39e72bf96f58. This is related to arch/powerpc/kernel/entry_64.S and arch/powerpc/kernel/security.c.
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 | 5.3.15-1 | — |
| Debian 13 | linux | 5.3.15-1 | — |
| Debian 12 | linux | 5.3.15-1 | — |
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-gke +3 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-74.84 | USN-4227-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1057.59 | USN-4227-1 |
| Ubuntu 18.04 LTS | linux-aws-5.0 | 5.0.0-1023.26~18.04.1 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-azure | 5.0.0-1028.30~18.04.1 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-azure-5.3 | 5.3.0-1009.10~18.04.1 | USN-4225-1 |
| Ubuntu 18.04 LTS | linux-gcp | 5.0.0-1028.29~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp-5.3 | 5.3.0-1010.11~18.04.1 | USN-4225-1 |
| Ubuntu 18.04 LTS | linux-gcp-edge +2 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gke-4.15 | 4.15.0-1050.53 | USN-4227-1 |
| Ubuntu 18.04 LTS | linux-gke-5.0 | 5.0.0-1027.28~18.04.1 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-hwe | 5.3.0-26.28~18.04.1 | USN-4225-2 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1052.52 | USN-4227-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1066.76 | USN-4227-1 |
| Ubuntu 18.04 LTS | linux-oem-osp1 | 5.0.0-1033.38 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1031.34 | USN-4227-1 |
| Ubuntu 18.04 LTS | linux-oracle-5.0 | 5.0.0-1009.14~18.04.1 | USN-4226-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1053.57 | USN-4227-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1070.77 | USN-4227-1 |
| Ubuntu 16.04 LTS | linux | 4.4.0-171.200 | USN-4228-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1100.111 | USN-4228-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1057.59~16.04.1 | USN-4227-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1066.71 | USN-4227-1 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1052.56 | USN-4227-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-74.83~16.04.1 | USN-4227-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1064.71 | USN-4228-1 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1031.34~16.04.1 | USN-4227-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1127.136 | USN-4228-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1131.139 | USN-4228-1 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS 18.04 LTS | linux-aws-fips +2 | No fix yet | — |
| Ubuntu Pro FIPS 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-aws-fips | 4.15.0-2018.18 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2006.7 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1027.32 | — |
| 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 | 4.4.0-1060.64 | USN-4228-2 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1066.71~14.04.1 | USN-4227-2 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-171.200~14.04.1 | USN-4228-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | perf +26 | 4.18.0-147.8.1.el8_1 | RHSA-2020:1372 |
| RHEL 7 | kernel +15 | 3.10.0-1127.el7 | RHSA-2020:1016, RHSA-2020:0174 |
| RHEL 7 | kernel-alt | 4.14.0-115.17.1.el7a | RHSA-2020:0174 |
| RHEL 7 | perf +2 | 3.10.0-957.56.1.el7 | RHSA-2020:2851, RHSA-2020:1016, RHSA-2020:0174 |
| RHEL 6 | perf +16 | 2.6.32-754.31.1.el6 | RHSA-2020:2933 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8.0 E4S | perf +18 | 4.18.0-80.23.2.el8_0 | RHSA-2020:2429 |
| RHEL 7.7 EUS | perf +19 | 3.10.0-1062.21.1.el7 | RHSA-2020:1984 |
| RHEL 7.6 EUS | perf +18 | 3.10.0-957.56.1.el7 | RHSA-2020:2851 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | kernel-azure +2 | 4.12.14-8.22.1 | SUSE-SU-2019:3372-1 |
| SLES 15 SP1 | kernel-docs | 4.12.14-197.29.2 | SUSE-SU-2019:3317-1 |
| SLES 15 SP1 | kernel-syms +4 | 4.12.14-197.29.1 | SUSE-SU-2019:3317-1 |
| SLES 15 | kernel-azure +2 | 4.12.14-5.47.1 | SUSE-SU-2019:3289-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-150.47.1 | SUSE-SU-2019:3381-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.7.1 | SUSE-SU-2020:0093-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.7.1 | SUSE-SU-2019:3200-1 |
| SLES 12 SP4 | kernel-azure +2 | 4.12.14-6.34.1 | SUSE-SU-2019:3316-1 |
| SLES 12 SP4 | kernel-docs +4 | 4.12.14-95.45.1 | SUSE-SU-2019:3371-1 |
| SLES 12 SP3 | kernel-syms +2 | 4.4.180-94.113.1 | SUSE-SU-2019:3379-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_30 | 1-4.5.1 | SUSE-SU-2019:3379-1 |
Show 17 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.129.1 | SUSE-SU-2020:1255-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_34 | 1-3.3.1 | SUSE-SU-2020:1255-1 |
| SLES 11 SP4 | kernel-ec2 +8 | 3.0.101-108.111.1 | SUSE-SU-2020:14354-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.7.1 | SUSE-SU-2020:0093-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.7.1 | SUSE-SU-2019:3200-1 |
| SLES for SAP 12 SP4 | kernel-azure +2 | 4.12.14-6.34.1 | SUSE-SU-2019:3316-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.45.1 | SUSE-SU-2019:3371-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.180-94.113.1 | SUSE-SU-2019:3379-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_30 | 1-4.5.1 | SUSE-SU-2019:3379-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.121-92.129.1 | SUSE-SU-2020:1255-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_34 | 1-3.3.1 | SUSE-SU-2020:1255-1 |
| SLE Real Time 12 SP4 | kernel-rt +3 | 4.12.14-8.12.1 | SUSE-SU-2020:0599-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.29.1 | SUSE-SU-2019:3317-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_8 | 1-3.3.1 | SUSE-SU-2019:3317-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.47.1 | SUSE-SU-2019:3381-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_17 | 1-1.3.2 | SUSE-SU-2019:3381-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.7.1 | SUSE-SU-2019:3200-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_1 | 1-8.7.1 | SUSE-SU-2019:3200-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.45.1 | SUSE-SU-2019:3371-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_11 | 1-6.5.1 | SUSE-SU-2019:3371-1 |
| SUSE Real Time Module 15 SP1 | kernel-rt +3 | 4.12.14-14.17.1 | SUSE-SU-2020:0613-1 |
| SUSE OpenStack Cloud Crowbar 8 | kernel-syms +2 | 4.4.180-94.113.1 | SUSE-SU-2019:3379-1 |
| SUSE OpenStack Cloud Crowbar 8 | kgraft-patch-SLE12-SP3_Update_30 | 1-4.5.1 | SUSE-SU-2019:3379-1 |
| SUSE OpenStack Cloud 8 | kernel-syms +2 | 4.4.180-94.113.1 | SUSE-SU-2019:3379-1 |
| SUSE OpenStack Cloud 8 | kgraft-patch-SLE12-SP3_Update_30 | 1-4.5.1 | SUSE-SU-2019:3379-1 |
| SUSE OpenStack Cloud 7 | kernel-syms +2 | 4.4.121-92.129.1 | SUSE-SU-2020:1255-1 |
| SUSE OpenStack Cloud 7 | kgraft-patch-SLE12-SP2_Update_34 | 1-3.3.1 | SUSE-SU-2020:1255-1 |
| SUSE HPE Helion OpenStack 8 | kernel-syms +2 | 4.4.180-94.113.1 | SUSE-SU-2019:3379-1 |
| SUSE HPE Helion OpenStack 8 | kgraft-patch-SLE12-SP3_Update_30 | 1-4.5.1 | SUSE-SU-2019:3379-1 |
| SUSE Enterprise Storage 5 | kernel-syms +2 | 4.4.180-94.113.1 | SUSE-SU-2019:3379-1 |
| SUSE Enterprise Storage 5 | kgraft-patch-SLE12-SP3_Update_30 | 1-4.5.1 | SUSE-SU-2019:3379-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.1 | kernel-docs +8 | 4.12.14-lp151.28.36.1 | openSUSE-SU-2019:2675-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-147.8.1.el8_1 | ELSA-2020-1372 |
| Oracle Linux 7 | perf +12 | 3.10.0-1127.el7 | ELSA-2020-1016 |
Advisories 30
- USN-4226-1 linux, linux-aws, linux-aws-5.0, linux-azure, linux-gcp, linux-gke-5.0, linux-kvm, linux-oem-osp1, linux-oracle, linux-oracle-5.0, linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Sep 9, 2026
- RHSA-2020:2933 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2429 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:1984 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:0174 Red Hat Security Advisory: kernel-alt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2020:2851 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2020:1372 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2020:1016 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- USN-4225-2 linux-hwe vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4225-1 linux, linux-aws, linux-azure, linux-azure-5.3, linux-gcp, linux-gcp-5.3, linux-kvm, linux-oracle, linux-raspi2 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4227-2 linux-azure vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4227-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-gcp, linux-gke-4.15, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4228-1 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4228-2 linux-lts-xenial, linux-aws vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- SUSE-SU-2020:0599-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:14354-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2675-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3372-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:1255-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3316-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3381-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3289-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3371-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3379-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0093-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:3317-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:0613-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2019:3200-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2020-1372 Moderate: kernel security and bug fix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Apr 9, 2020
- ELSA-2020-1016 Moderate: kernel security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 6, 2020
References
- https://www.openwall.com/lists/oss-security/2019/11/27/1
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=39e72bf96f5847ba87cc5bd7a3ce0fed813dc9ad
- [oss-security] 20191128 CVE-2019-18660: Linux kernel: powerpc: missing Spectre-RSB mitigation mailing-list
- FEDORA-2019-b86a7bdba0 vendor-advisory
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.1
- FEDORA-2019-124a241044 vendor-advisory
- openSUSE-SU-2019:2675 vendor-advisory
- https://security.netapp.com/advisory/ntap-20200103-0001/
- USN-4228-1 vendor-advisory
- USN-4227-1 vendor-advisory
- USN-4226-1 vendor-advisory
- USN-4225-1 vendor-advisory
- USN-4228-2 vendor-advisory
- USN-4227-2 vendor-advisory
- 20200109 [slackware-security] Slackware 14.2 kernel (SSA:2020-008-01) mailing-list
- http://packetstormsecurity.com/files/155890/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- RHSA-2020:0174 vendor-advisory
- USN-4225-2 vendor-advisory