Description
A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was using ioctls KDGKBSENT and KDSKBSENT. A local user could use this flaw to get read memory access out of bounds. The highest threat from this vulnerability is to data confidentiality.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | kernel | kernel 5.10-rc2 | — |
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 | 5.9.6-1 | — |
| Debian 13 | linux | 5.9.6-1 | — |
| Debian 12 | linux | 5.9.6-1 | — |
| Debian 9 | linux | 4.9.246-1 | DLA-2494-1 |
| 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-realtime +1 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-59.65 | USN-4679-1 |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1034.35 | USN-4679-1 |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1035.36 | USN-4679-1 |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1033.35 | USN-4679-1 |
| Ubuntu 20.04 LTS | linux-hwe-5.8 | 5.8.0-44.50~20.04.1 | USN-4751-1 |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1031.32 | USN-4679-1 |
| Ubuntu 20.04 LTS | linux-oem-5.6 | 5.6.0-1050.54 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1034.36 | USN-4679-1 |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1026.29 | USN-4679-1 |
| Ubuntu 20.04 LTS | linux-raspi2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv | 5.4.0-40.45 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.8 | 5.8.0-17.19~20.04.1 | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-129.132 | USN-4680-1 |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1091.96 | USN-4680-1 |
| Ubuntu 18.04 LTS | linux-aws-5.4 | 5.4.0-1034.35~18.04.1 | USN-4679-1 |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1103.114 | USN-4680-1 |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1035.36~18.04.1 | USN-4679-1 |
| Ubuntu 18.04 LTS | linux-dell300x | 4.15.0-1010.14 | — |
| Ubuntu 18.04 LTS | linux-gcp +12 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1091.104 | USN-4680-1 |
| Ubuntu 18.04 LTS | linux-gcp-5.4 +1 | 5.4.0-1033.35~18.04.1 | USN-4679-1 |
| Ubuntu 18.04 LTS | linux-gkeop-5.4 | 5.4.0-1008.9~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-59.65~18.04.1 | USN-4679-1 |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1082.84 | USN-4680-1 |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1062.68 | USN-4680-1 |
| Ubuntu 18.04 LTS | linux-oracle-5.4 | 5.4.0-1034.36~18.04.1 | USN-4679-1 |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1026.29~18.04.1 | USN-4679-1 |
| Ubuntu 18.04 LTS | linux-raspi2 +1 | 4.15.0-1077.82 | USN-4680-1 |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1094.103 | USN-4680-1 |
| Ubuntu 16.04 LTS | linux | 4.4.0-198.230 | USN-4681-1 |
| Ubuntu 16.04 LTS | linux-aws | 4.4.0-1119.133 | USN-4681-1 |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1091.96~16.04.1 | USN-4680-1 |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1103.114~16.04.1 | USN-4680-1 |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1091.104~16.04.1 | USN-4680-1 |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-129.132~16.04.1 | USN-4680-1 |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-kvm | 4.4.0-1085.94 | USN-4681-1 |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1062.68~16.04.1 | USN-4680-1 |
| Ubuntu 16.04 LTS | linux-raspi2 | 4.4.0-1143.153 | USN-4681-1 |
| Ubuntu 16.04 LTS | linux-snapdragon | 4.4.0-1147.157 | USN-4681-1 |
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 | 4.15.0-2034.35 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2016.18 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1049.56 | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | 4.4.0-1052.58 | — |
| 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 |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1103.114~14.04.1 | USN-4680-1 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-198.230~14.04.1 | USN-4681-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-553.rt7.342.el8_10 | RHSA-2024:2950 |
| RHEL 8 | perf +26 | 4.18.0-553.el8_10 | RHSA-2024:3138 |
| RHEL 7 | kernel-rt +10 | 3.10.0-1160.21.1.rt56.1158.el7 | RHSA-2021:0857 |
| RHEL 7 | perf +18 | 3.10.0-1160.21.1.el7 | RHSA-2021:0856 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | kernel-rt +11 | 4.18.0-553.rt7.342.el8_10 | ALSA-2024:2950 |
| AlmaLinux 8 | perf +24 | 4.18.0-553.el8_10 | ALSA-2024:3138 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | kernel | 4.18.0-553.el8_10 | RXSA-2024:3138, RLSA-2024:3138 |
| Rocky Linux 8 | kernel-rt | 4.18.0-553.rt7.342.el8_10 | RLSA-2024:2950 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | kernel-azure +2 | 5.3.18-18.24.1 | SUSE-SU-2020:3491-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-24.37.1.9.13.1 | SUSE-SU-2020:3273-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-24.37.1 | SUSE-SU-2020:3273-1 |
| SLES 15 SP1 | kernel-azure +2 | 4.12.14-8.52.1 | SUSE-SU-2020:3484-1 |
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-197.67.1 | SUSE-SU-2020:3272-1 |
| SLES 15 | kernel-docs +6 | 4.12.14-150.63.1 | SUSE-SU-2020:3532-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.34.1 | SUSE-SU-2020:3281-1 |
| SLES 12 SP5 | kernel-docs +4 | 4.12.14-122.51.2 | SUSE-SU-2020:3326-1 |
| SLES 12 SP4 | kernel-syms +2 | 4.12.14-95.65.1 | SUSE-SU-2020:3544-1 |
Show 24 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP3 | kernel-syms +2 | 4.4.180-94.135.1 | SUSE-SU-2020:3503-1 |
| SLES 12 SP3 | kgraft-patch-SLE12-SP3_Update_36 | 1-4.5.1 | SUSE-SU-2020:3503-1 |
| SLES 12 SP2 | kernel-syms +2 | 4.4.121-92.146.1 | SUSE-SU-2020:3501-1 |
| SLES 12 SP2 | kgraft-patch-SLE12-SP2_Update_38 | 1-3.5.1 | SUSE-SU-2020:3501-1 |
| SLES 11 SP4 | kernel-ec2 +8 | 3.0.101-108.120.1 | SUSE-SU-2021:14630-1 |
| SLES for SAP 15 | kernel-docs +5 | 4.12.14-150.63.1 | SUSE-SU-2020:3532-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.34.1 | SUSE-SU-2020:3281-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.51.2 | SUSE-SU-2020:3326-1 |
| SLES for SAP 12 SP4 | kernel-syms +2 | 4.12.14-95.65.1 | SUSE-SU-2020:3544-1 |
| SLES for SAP 12 SP3 | kernel-syms +2 | 4.4.180-94.135.1 | SUSE-SU-2020:3503-1 |
| SLES for SAP 12 SP3 | kgraft-patch-SLE12-SP3_Update_36 | 1-4.5.1 | SUSE-SU-2020:3503-1 |
| SLES for SAP 12 SP2 | kernel-syms +2 | 4.4.121-92.146.1 | SUSE-SU-2020:3501-1 |
| SLES for SAP 12 SP2 | kgraft-patch-SLE12-SP2_Update_38 | 1-3.5.1 | SUSE-SU-2020:3501-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.22.1 | SUSE-SU-2020:3512-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-24.37.1 | SUSE-SU-2020:3273-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_7 | 1-5.3.1 | SUSE-SU-2020:3273-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.67.1 | SUSE-SU-2020:3272-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_18 | 1-3.3.1 | SUSE-SU-2020:3272-1 |
| SLE Live Patching 15 | kernel-default | 4.12.14-150.63.1 | SUSE-SU-2020:3532-1 |
| SLE Live Patching 15 | kernel-livepatch-SLE15_Update_21 | 1-1.5.1 | SUSE-SU-2020:3532-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.51.2 | SUSE-SU-2020:3326-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_12 | 1-8.5.2 | SUSE-SU-2020:3326-1 |
| SLE Live Patching 12 SP4 | kernel-default | 4.12.14-95.65.1 | SUSE-SU-2020:3544-1 |
| SLE Live Patching 12 SP4 | kgraft-patch-SLE12-SP4_Update_17 | 1-6.5.1 | SUSE-SU-2020:3544-1 |
| SLE HPC 15 | kernel-docs +5 | 4.12.14-150.63.1 | SUSE-SU-2020:3532-1 |
| SUSE Real Time Module 15 SP2 | kernel-rt +3 | 5.3.18-16.1 | SUSE-SU-2020:3522-1 |
| SUSE Real Time Module 15 SP1 | kernel-rt +3 | 4.12.14-14.41.2 | SUSE-SU-2020:3513-1 |
| SUSE OpenStack Cloud Crowbar 9 | kernel-syms +2 | 4.12.14-95.65.1 | SUSE-SU-2020:3544-1 |
| SUSE OpenStack Cloud Crowbar 8 | kernel-syms +2 | 4.4.180-94.135.1 | SUSE-SU-2020:3503-1 |
| SUSE OpenStack Cloud Crowbar 8 | kgraft-patch-SLE12-SP3_Update_36 | 1-4.5.1 | SUSE-SU-2020:3503-1 |
| SUSE OpenStack Cloud 9 | kernel-syms +2 | 4.12.14-95.65.1 | SUSE-SU-2020:3544-1 |
| SUSE OpenStack Cloud 8 | kernel-syms +2 | 4.4.180-94.135.1 | SUSE-SU-2020:3503-1 |
| SUSE OpenStack Cloud 8 | kgraft-patch-SLE12-SP3_Update_36 | 1-4.5.1 | SUSE-SU-2020:3503-1 |
| SUSE OpenStack Cloud 7 | kernel-syms +2 | 4.4.121-92.146.1 | SUSE-SU-2020:3501-1 |
| SUSE OpenStack Cloud 7 | kgraft-patch-SLE12-SP2_Update_38 | 1-3.5.1 | SUSE-SU-2020:3501-1 |
| SUSE HPE Helion OpenStack 8 | kernel-syms +2 | 4.4.180-94.135.1 | SUSE-SU-2020:3503-1 |
| SUSE HPE Helion OpenStack 8 | kgraft-patch-SLE12-SP3_Update_36 | 1-4.5.1 | SUSE-SU-2020:3503-1 |
| SUSE Enterprise Storage 5 | kernel-syms +2 | 4.4.180-94.135.1 | SUSE-SU-2020:3503-1 |
| SUSE Enterprise Storage 5 | kgraft-patch-SLE12-SP3_Update_36 | 1-4.5.1 | SUSE-SU-2020:3503-1 |
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 15.2 | kernel-default-base | 5.3.18-lp152.50.1.lp152.8.10.1 | openSUSE-SU-2020:2112-1 |
| openSUSE Leap 15.2 | kernel-docs +8 | 5.3.18-lp152.50.1 | openSUSE-SU-2020:1906-1 |
| openSUSE Leap 15.2 | kernel-rt +3 | 5.3.18-lp152.3.5.1 | openSUSE-SU-2021:0242-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | kernel-livepatch-4.14.209-160.335 | 1.0-0.amzn2 | ALAS2-2020-1566 |
| Amazon Linux 2 | perf +8 | 4.14.209-160.335.amzn2 | ALAS2-2020-1566 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-553.el8_10 | ELSA-2024-3138 |
| Oracle Linux 7 | kernel-uek +8 | 4.14.35-2025.403.3.el7uek | ELSA-2020-5996, ELSA-2020-5995 |
| Oracle Linux 7 | perf +12 | 3.10.0-1160.21.1.el7 | ELSA-2021-0856, ELSA-2020-5996, ELSA-2020-5995 |
Advisories 40
- ALSA-2024:3138 Moderate: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:2950 Moderate: kernel-rt security and bug fix update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2024:2950 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2024:3138 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2021:0857 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2021:0856 Red Hat Security Advisory: kernel security and bug fix update Red Hat Security Advisories (RHSA) · Aug 26, 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-4680-1 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-oracle, linux-raspi2, linux-snapdragon vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4751-1 linux, linux-aws, linux-azure, linux-gcp, linux-hwe-5.8, linux-kvm, linux-oracle, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-4679-1 linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4, linux-gcp, linux-gcp-5.4, linux-gke-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
- RXSA-2024:3138 Moderate: kernel security, bug fix, and enhancement update Rocky Linux Security Advisories · May 29, 2026
- DLA-2494-1 linux - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2483-1 linux-4.19 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2024:2950 Moderate: kernel-rt security and bug fix update Rocky Linux Security Advisories · Feb 5, 2026
- RLSA-2024:3138 Moderate: kernel security, bug fix, and enhancement update Rocky Linux Security Advisories · Feb 4, 2026
- openSUSE-SU-2021:0242-1 Security update for RT kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3484-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3522-1 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-2020:3544-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3491-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3513-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3532-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3273-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3512-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3501-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2020:3326-1 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
- openSUSE-SU-2020:1906-1 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
- SUSE-SU-2020:3281-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2020:2112-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 7, 2025
- SUSE-SU-2020:3503-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2020:3272-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2022-2090 Linux Kernel: Schwachstelle ermöglicht Offenlegung von Informationen BSI CERT-Bund (WID) · Jun 9, 2024
- ELSA-2024-3138 Moderate: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 23, 2024
- ELSA-2021-0856 Important: kernel security and bug fix update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Mar 17, 2021
- ELSA-2020-5996 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 15, 2020
- ELSA-2020-5995 Important: Unbreakable Enterprise kernel security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Dec 14, 2020
- ALAS2-2020-1566 Important: kernel security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Dec 8, 2020
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1888726
- https://lkml.org/lkml/2020/10/29/528
- https://lkml.org/lkml/2020/10/16/84
- [debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security update mailing-list
- [debian-lts-announce] 20201218 [SECURITY] [DLA 2494-1] linux security update mailing-list
- https://www.starwindsoftware.com/security/sw-20210325-0006/