Description
A race condition in the Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of ttys could lead to a use-after-free.
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 | 5.5.17-1 | — |
| Debian 13 | linux | 5.5.17-1 | — |
| Debian 12 | linux | 5.5.17-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux-realtime +1 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1011.11 | — |
| Ubuntu 20.04 LTS | linux-riscv +22 | No fix yet | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-99.100 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1066.70 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1059.60 | — |
| Ubuntu 18.04 LTS | linux-oem-osp1 | 5.0.0-1052.57 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1038.42 | — |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1061.65 | — |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1077.84 | — |
| Ubuntu 16.04 LTS | linux | 4.4.0-179.209 | — |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1107.118 | — |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1066.70~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1082.92~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1061.65 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-99.100~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1071.78 | — |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1038.42~16.04.1 | — |
Show 5 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 18.04 LTS | linux-fips | 4.15.0-1029.34 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1034.39 | — |
| Ubuntu Pro 14.04 LTS | linux | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws | 4.4.0-1067.71 | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1082.92~14.04.1 | — |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-179.209~14.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | perf +26 | 4.18.0-305.el8 | RHSA-2021:1578 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | kernel-64kb +7 | 5.3.18-150300.59.90.1 | SUSE-SU-2022:2875-1 |
| SLES 15 SP3 | kernel-azure +2 | 5.3.18-150300.38.75.1 | SUSE-SU-2022:2741-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-150300.59.90.1.150300.18.52.1 | SUSE-SU-2022:2875-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-150200.24.126.1.150200.9.59.2 | SUSE-SU-2022:2809-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
| SLES 15 SP1 | kernel-docs | 4.12.14-150100.197.120.2 | SUSE-SU-2022:2827-1 |
| SLES 15 SP1 | kernel-syms +4 | 4.12.14-150100.197.120.1 | SUSE-SU-2022:2827-1 |
| SLES 15 | kernel-docs | 4.12.14-150000.150.98.2 | SUSE-SU-2022:2723-1 |
| SLES 15 | kernel-syms +5 | 4.12.14-150000.150.98.1 | SUSE-SU-2022:2723-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.106.1 | SUSE-SU-2022:2720-1 |
| SLES 12 SP5 | kernel-docs | 4.12.14-122.130.2 | SUSE-SU-2022:2719-1 |
| SLES 12 SP5 | kernel-syms +3 | 4.12.14-122.130.1 | SUSE-SU-2022:2719-1 |
Show 29 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP4 | kernel-syms +2 | 4.12.14-95.108.1 | SUSE-SU-2022:3274-1 |
| SLES 12 SP3 | kernel-syms +2 | 4.4.180-94.171.1 | SUSE-SU-2022:2840-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.181.1 | SUSE-SU-2022:2721-1 |
| SLES 11 SP4 | kernel-ec2 +5 | 3.0.101-108.138.1 | SUSE-SU-2023:0416-1 |
| SLES for SAP 15 SP2 | kernel-default-base | 5.3.18-150200.24.126.1.150200.9.59.2 | SUSE-SU-2022:2809-1 |
| SLES for SAP 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
| SLES for SAP 15 SP1 | kernel-docs | 4.12.14-150100.197.120.2 | SUSE-SU-2022:2827-1 |
| SLES for SAP 15 SP1 | kernel-syms +3 | 4.12.14-150100.197.120.1 | SUSE-SU-2022:2827-1 |
| SLES for SAP 15 | kernel-docs | 4.12.14-150000.150.98.2 | SUSE-SU-2022:2723-1 |
| SLES for SAP 15 | kernel-syms +4 | 4.12.14-150000.150.98.1 | SUSE-SU-2022:2723-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.106.1 | SUSE-SU-2022:2720-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.130.1 | SUSE-SU-2022:2719-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.108.1 | SUSE-SU-2022:3274-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.97.1 | SUSE-SU-2022:2910-1 |
| SLE Micro 5.2 | kernel-default | 5.3.18-150300.59.90.1 | SUSE-SU-2022:2875-1 |
| SLE Micro 5.2 | kernel-default-base | 5.3.18-150300.59.90.1.150300.18.52.1 | SUSE-SU-2022:2875-1 |
| SLE Micro 5.2 | kernel-rt | 5.3.18-150300.99.1 | SUSE-SU-2022:2892-1 |
| SLE Micro 5.1 | kernel-default | 5.3.18-150300.59.90.1 | SUSE-SU-2022:2875-1 |
| SLE Micro 5.1 | kernel-default-base | 5.3.18-150300.59.90.1.150300.18.52.1 | SUSE-SU-2022:2875-1 |
| SLE Micro 5.1 | kernel-rt | 5.3.18-150300.99.1 | SUSE-SU-2022:2892-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-150300.59.90.1 | SUSE-SU-2022:2875-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_23 | 1-150300.7.3.1 | SUSE-SU-2022:2875-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_29 | 1-150200.5.5.1 | SUSE-SU-2022:2809-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-150100.197.120.1 | SUSE-SU-2022:2827-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_33 | 1-150100.3.3.1 | SUSE-SU-2022:2827-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150000.150.98.1 | SUSE-SU-2022:2723-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_26 | 15-150000.2.2 | SUSE-SU-2022:4129-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_27 | 11-150000.2.2 | SUSE-SU-2022:4129-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_28 | 10-150000.2.2 | SUSE-SU-2022:4129-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_29 | 9-150000.2.2 | SUSE-SU-2022:4129-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_30 | 6-150000.2.1 | SUSE-SU-2022:4129-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_31 | 4-150000.2.1 | SUSE-SU-2022:4027-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_32 | 1-150000.1.3.1 | SUSE-SU-2022:2723-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.130.1 | SUSE-SU-2022:2719-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_34 | 1-8.3.1 | SUSE-SU-2022:2719-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.108.1 | SUSE-SU-2022:3274-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_30 | 1-6.3.1 | SUSE-SU-2022:3274-1 |
| SLE HPC 15 SP2 | kernel-default-base | 5.3.18-150200.24.126.1.150200.9.59.2 | SUSE-SU-2022:2809-1 |
| SLE HPC 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
| SLE HPC 15 SP1 | kernel-docs | 4.12.14-150100.197.120.2 | SUSE-SU-2022:2827-1 |
| SLE HPC 15 SP1 | kernel-syms +3 | 4.12.14-150100.197.120.1 | SUSE-SU-2022:2827-1 |
| SLE HPC 15 | kernel-docs | 4.12.14-150000.150.98.2 | SUSE-SU-2022:2723-1 |
| SLE HPC 15 | kernel-syms +4 | 4.12.14-150000.150.98.1 | SUSE-SU-2022:2723-1 |
| SUSE Real Time Module 15 SP3 | kernel-rt +3 | 5.3.18-150300.99.1 | SUSE-SU-2022:2892-1 |
| SUSE OpenStack Cloud Crowbar 9 | kernel-syms +2 | 4.12.14-95.108.1 | SUSE-SU-2022:3274-1 |
| SUSE OpenStack Cloud 9 | kernel-syms +2 | 4.12.14-95.108.1 | SUSE-SU-2022:3274-1 |
| SUSE Manager Server 4.1 | kernel-default-base | 5.3.18-150200.24.126.1.150200.9.59.2 | SUSE-SU-2022:2809-1 |
| SUSE Manager Server 4.1 | kernel-docs +5 | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
| SUSE Manager Retail Branch Server 4.1 | kernel-default-base | 5.3.18-150200.24.126.1.150200.9.59.2 | SUSE-SU-2022:2809-1 |
| SUSE Manager Retail Branch Server 4.1 | kernel-docs +4 | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
| SUSE Manager Proxy 4.1 | kernel-default-base | 5.3.18-150200.24.126.1.150200.9.59.2 | SUSE-SU-2022:2809-1 |
| SUSE Manager Proxy 4.1 | kernel-docs +4 | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
| SUSE Enterprise Storage 7 | kernel-default-base | 5.3.18-150200.24.126.1.150200.9.59.2 | SUSE-SU-2022:2809-1 |
| SUSE Enterprise Storage 7 | kernel-docs +5 | 5.3.18-150200.24.126.1 | SUSE-SU-2022:2809-1 |
| SUSE Enterprise Storage 6 | kernel-docs | 4.12.14-150100.197.120.2 | SUSE-SU-2022:2827-1 |
| SUSE Enterprise Storage 6 | kernel-syms +3 | 4.12.14-150100.197.120.1 | SUSE-SU-2022:2827-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | dtb-aarch64 | 5.3.18-150300.59.90.1 | SUSE-SU-2022:2875-1 |
| openSUSE Leap 15.4 | kernel-debug +4 | 4.12.14-150100.197.120.1 | SUSE-SU-2022:2827-1 |
| openSUSE Leap 15.3 | dtb-aarch64 +7 | 5.3.18-150300.59.90.1 | SUSE-SU-2022:2875-1 |
| openSUSE Leap 15.3 | kernel-azure +2 | 5.3.18-150300.38.75.1 | SUSE-SU-2022:2741-1 |
| openSUSE Leap 15.3 | kernel-debug +4 | 4.12.14-150100.197.120.1 | SUSE-SU-2022:2875-1, SUSE-SU-2022:2827-1 |
| openSUSE Leap 15.3 | kernel-default-base | 5.3.18-150300.59.90.1.150300.18.52.1 | SUSE-SU-2022:2875-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap Micro 5.2 | kernel-default | 5.3.18-150300.59.90.1 | SUSE-SU-2022:2875-2 |
| openSUSE Leap Micro 5.2 | kernel-default-base | 5.3.18-150300.59.90.1.150300.18.52.1 | SUSE-SU-2022:2875-2 |
| openSUSE Leap Micro 5.2 | kernel-rt | 5.3.18-150300.99.1 | SUSE-SU-2022:2892-2 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | kernel-uek +5 | 4.1.12-124.66.3.el7uek | ELSA-2022-9761 |
Advisories 22
- WID-SEC-2024-0794 Dell ECS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
- RHSA-2021:1578 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Aug 7, 2026
- SUSE-SU-2022:2875-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2741-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2809-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2721-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2720-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2719-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4027-1 Security update for the Linux Kernel (Live Patch 31 for SLE 15) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2840-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:3274-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:0416-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:4129-1 Security update for the Linux Kernel (Live Patch 30 for SLE 15) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2723-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2892-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2875-2 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2910-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2892-2 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2022:2827-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2022-0786 Linux Kernel: Mehrere Schwachstellen ermöglichen nicht spezifizierten Angriff BSI CERT-Bund (WID) · Jun 5, 2024
- WID-SEC-2023-1969 HPE Fabric OS: Mehrere Schwachstellen ermöglichen Privilegieneskalation BSI CERT-Bund (WID) · Aug 6, 2023
- ELSA-2022-9761 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Sep 6, 2022