Description
In the Linux kernel through 5.2.14 on the powerpc platform, a local user can read vector registers of other users' processes via a Facility Unavailable exception. To exploit the venerability, a local user starts a transaction (via the hardware transactional memory instruction tbegin) and then accesses vector registers. At some point, the vector registers will be corrupted with the values from a different local Linux process because of a missing arch/powerpc/kernel/process.c check.
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 | 5.2.17-1 | — |
| Debian 13 | linux | 5.2.17-1 | — |
| Debian 12 | linux | 5.2.17-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | linux-vmware | No fix yet | — |
| 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 +2 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-64.73 | USN-4135-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1050.52 | USN-4135-1 |
| Ubuntu 18.04 LTS | linux-azure | 5.0.0-1020.21~18.04.1 | USN-4135-1 |
| Ubuntu 18.04 LTS | linux-gcp | 4.15.0-1044.70 | USN-4135-1 |
| Ubuntu 18.04 LTS | linux-gke-4.15 | 4.15.0-1044.46 | USN-4135-1 |
| Ubuntu 18.04 LTS | linux-gke-5.0 | 5.0.0-1017.17~18.04.1 | USN-4135-1 |
| Ubuntu 18.04 LTS | linux-hwe | 5.0.0-29.31~18.04.1 | USN-4135-1 |
| Ubuntu 18.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1046.46 | USN-4135-1 |
| Ubuntu 18.04 LTS | linux-oem | 4.15.0-1056.65 | USN-4135-1 |
| Ubuntu 18.04 LTS | linux-oem-osp1 | 5.0.0-1022.24 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1025.28 | USN-4135-1 |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1047.51 | USN-4135-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1064.71 | USN-4135-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux | 4.4.0-164.192 | USN-4135-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1094.105 | USN-4135-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1050.52~16.04.1 | USN-4135-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1059.64 | USN-4135-1 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1044.46 | USN-4135-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-64.73~16.04.1 | USN-4135-1 |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1058.65 | USN-4135-1 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1025.28~16.04.1 | USN-4135-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1122.131 | USN-4135-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1126.132 | USN-4135-1 |
| Ubuntu Pro FIPS 18.04 LTS | linux-aws-fips +2 | 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 14.04 LTS | linux | 3.13.0-173.224 | USN-4135-2 |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1054.58 | USN-4135-2 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1059.64~14.04.1 | USN-4135-2 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-164.192~14.04.1 | USN-4135-2 |
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 | perf +13 | 4.14.0-115.18.1.el7a | RHSA-2020:0740 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP1 | kernel-azure +2 | 4.12.14-8.16.1 | SUSE-SU-2019:2658-1 |
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-197.18.1 | SUSE-SU-2019:2424-1 |
| SLES 15 | kernel-azure +2 | 4.12.14-5.41.1 | SUSE-SU-2019:2651-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-150.35.1 | SUSE-SU-2019:2414-1 |
| 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 | 4.12.14-6.26.1 | SUSE-SU-2019:2648-1 |
| SLES 12 SP4 | kernel-docs +4 | 4.12.14-95.32.1 | SUSE-SU-2019:2412-1 |
Show 8 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| 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 | 4.12.14-6.26.1 | SUSE-SU-2019:2648-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.32.1 | SUSE-SU-2019:2412-1 |
| SLE Real Time 12 SP4 | kernel-rt +3 | 4.12.14-8.6.1 | SUSE-SU-2019:2756-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.18.1 | SUSE-SU-2019:2424-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_5 | 1-3.3.1 | SUSE-SU-2019:2424-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.35.1 | SUSE-SU-2019:2414-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_14 | 1-1.3.1 | SUSE-SU-2019:2414-1 |
| 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 | kgraft-patch-SLE12-SP4_Update_8 | 1-6.3.1 | SUSE-SU-2019:2412-1 |
| SUSE Real Time Module 15 SP1 | kernel-rt +3 | 4.12.14-14.11.1 | SUSE-SU-2019:2738-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | kernel-source | 5.14.6-1.4 | openSUSE-SU-2024:13704-1, openSUSE-SU-2024:10728-1 |
| openSUSE Leap 15.1 | kernel-docs +8 | 4.12.14-lp151.28.16.1 | openSUSE-SU-2019:2181-1 |
| openSUSE Leap 15.0 | kernel-docs +8 | 4.12.14-lp150.12.73.1 | openSUSE-SU-2019:2173-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-147.8.1.el8_1 | ELSA-2020-1372 |
Advisories 19
- USN-4135-2 linux, linux-aws, linux-azure, linux-lts-trusty, linux-lts-xenial vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- USN-4135-1 linux, linux-aws, linux-aws-hwe, linux-azure, linux-gcp, linux-gke-4.15, linux-gke-5.0, linux-hwe, linux-kvm, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Sep 7, 2026
- RHSA-2020:1372 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2020:0740 Red Hat Security Advisory: kernel-alt security and bug fix update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- openSUSE-SU-2019:2173-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2756-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:13704-1 kernel-devel-longterm-6.6.17-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2648-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2414-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2412-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2658-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:2651-1 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
- openSUSE-SU-2024:10728-1 kernel-devel-5.14.6-1.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:2181-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2019:2738-1 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
- SUSE-SU-2019:2424-1 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
References
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8205d5d98ef7f155de211f5e2eb6ca03d95a5a60
- http://www.openwall.com/lists/oss-security/2019/09/10/3
- USN-4135-2 vendor-advisory
- openSUSE-SU-2019:2173 vendor-advisory
- openSUSE-SU-2019:2181 vendor-advisory
- USN-4135-1 vendor-advisory
- https://security.netapp.com/advisory/ntap-20191004-0001/
- RHSA-2020:0740 vendor-advisory