Description
In tun_get_user of tun.c, there is possible memory corruption due to a use after free. This could lead to local escalation of privilege with System execution privileges required. User interaction is not required for exploitation. Product: Android; Versions: Android kernel; Android ID: A-146554327.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Android | Android kernel | — |
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 | 5.7.6-1 | — |
| Debian 13 | linux | 5.7.6-1 | — |
| Debian 12 | linux | 5.7.6-1 | — |
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 | 5.4.0-45.49 | — |
| Ubuntu 20.04 LTS | linux-aws +2 | 5.4.0-1022.22 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1023.23 | — |
| Ubuntu 20.04 LTS | linux-gke +3 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1021.21 | — |
| Ubuntu 20.04 LTS | linux-oem-5.6 | 5.6.0-1020.20 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1016.17 | — |
| Ubuntu 18.04 LTS | linux | 4.15.0-115.116 | — |
| Ubuntu 18.04 LTS | linux-aws | 4.15.0-1080.84 | — |
| Ubuntu 18.04 LTS | linux-aws-5.4 +2 | 5.4.0-1022.22~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-azure-4.15 | 4.15.0-1093.103 | — |
| Ubuntu 18.04 LTS | linux-azure-5.4 | 5.4.0-1023.23~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +12 | No fix yet | — |
| Ubuntu 18.04 LTS | linux-gcp-4.15 | 4.15.0-1081.92 | — |
| Ubuntu 18.04 LTS | linux-gke-4.15 | 4.15.0-1067.70 | — |
| Ubuntu 18.04 LTS | linux-gke-5.0 | 5.0.0-1045.46 | — |
| Ubuntu 18.04 LTS | linux-gke-5.3 | 5.3.0-1032.34~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-hwe-5.4 | 5.4.0-45.49~18.04.2 | — |
| Ubuntu 18.04 LTS | linux-kvm | 4.15.0-1072.73 | — |
| Ubuntu 18.04 LTS | linux-oem-osp1 | 5.0.0-1065.70 | — |
| Ubuntu 18.04 LTS | linux-oracle | 4.15.0-1051.55 | — |
| Ubuntu 18.04 LTS | linux-raspi-5.4 | 5.4.0-1016.17~18.04.1 | — |
| Ubuntu 18.04 LTS | linux-raspi2 | 4.15.0-1068.72 | — |
| Ubuntu 18.04 LTS | linux-raspi2-5.3 | 5.3.0-1030.32~18.04.2 | — |
| Ubuntu 18.04 LTS | linux-snapdragon | 4.15.0-1084.92 | — |
| Ubuntu 16.04 LTS | linux-aws-hwe | 4.15.0-1080.84~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-azure | 4.15.0-1093.103~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-gcp | 4.15.0-1081.92~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe | 4.15.0-115.116~16.04.1 | — |
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu 16.04 LTS | linux-oracle | 4.15.0-1051.55~16.04.1 | — |
Show 5 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-aws-fips +2 | 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 | 4.15.0-2025.25 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-azure-fips | 4.15.0-2007.8 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips | 4.15.0-1039.44 | — |
| Ubuntu Pro 14.04 LTS | linux-azure | 4.15.0-1093.103~14.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | kernel-rt +12 | 4.18.0-305.rt7.72.el8 | RHSA-2021:1739 |
| RHEL 8 | perf +26 | 4.18.0-305.el8 | RHSA-2021:1578 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | kernel-tools-libs-devel | 4.18.0-305.el8 | ALSA-2021:1578 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | kernel-azure +2 | 5.3.18-18.35.2 | SUSE-SU-2021:0347-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-24.49.2.9.21.2 | SUSE-SU-2021:0354-1 |
| SLES 15 SP2 | kernel-docs | 5.3.18-24.49.3 | SUSE-SU-2021:0354-1 |
| SLES 15 SP2 | kernel-syms +4 | 5.3.18-24.49.2 | SUSE-SU-2021:0354-1 |
| SLES 15 SP1 | kernel-docs +5 | 4.12.14-197.83.1 | SUSE-SU-2021:0532-1 |
| SLES 12 SP5 | kernel-azure +2 | 4.12.14-16.44.1 | SUSE-SU-2021:0348-1 |
| SLES 12 SP5 | kernel-docs | 4.12.14-122.60.2 | SUSE-SU-2021:0353-1 |
| SLES 12 SP5 | kernel-syms +3 | 4.12.14-122.60.1 | SUSE-SU-2021:0353-1 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP1 | kernel-docs +4 | 4.12.14-197.83.1 | SUSE-SU-2021:0532-1 |
| SLES for SAP 12 SP5 | kernel-azure +2 | 4.12.14-16.44.1 | SUSE-SU-2021:0348-1 |
| SLES for SAP 12 SP5 | kernel-syms +2 | 4.12.14-122.60.1 | SUSE-SU-2021:0353-1 |
| SLE Real Time 12 SP5 | kernel-rt +3 | 4.12.14-10.31.1 | SUSE-SU-2021:0433-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-24.49.2 | SUSE-SU-2021:0354-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_0 | 8-5.2 | SUSE-SU-2021:0849-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_10 | 1-5.3.2 | SUSE-SU-2021:0354-1 |
| SLE Live Patching 15 SP1 | kernel-default | 4.12.14-197.83.1 | SUSE-SU-2021:0532-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_11 | 9-2.2 | SUSE-SU-2021:0853-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_12 +2 | 7-2.2 | SUSE-SU-2021:0859-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_15 | 6-2.2 | SUSE-SU-2021:0859-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_16 | 5-2.2 | SUSE-SU-2021:0859-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_17 +1 | 4-2.2 | SUSE-SU-2021:0853-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_19 +2 | 3-2.2 | SUSE-SU-2021:0853-1, SUSE-SU-2021:0818-1, SUSE-SU-2021:0809-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_22 | 1-3.5.1 | SUSE-SU-2021:0532-1 |
| SLE Live Patching 15 SP1 | kernel-livepatch-SLE15-SP1_Update_9 +1 | 10-2.2 | SUSE-SU-2021:0853-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.60.1 | SUSE-SU-2021:0353-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_10 | 7-2.2 | SUSE-SU-2021:0818-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_11 +1 | 5-2.2 | SUSE-SU-2021:0818-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_13 +1 | 3-2.2 | SUSE-SU-2021:0818-1, SUSE-SU-2021:0809-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_15 | 1-8.3.1 | SUSE-SU-2021:0353-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_3 | 11-2.2 | SUSE-SU-2021:0818-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_4 | 10-2.2 | SUSE-SU-2021:0818-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_5 +3 | 9-2.2 | SUSE-SU-2021:0818-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_9 | 8-2.2 | SUSE-SU-2021:0818-1 |
| SLE HPC 15 SP1 | kernel-docs +4 | 4.12.14-197.83.1 | SUSE-SU-2021:0532-1 |
| SUSE Real Time Module 15 SP2 | kernel-rt +3 | 5.3.18-25.1 | SUSE-SU-2021:0427-1 |
| SUSE Manager Server 4.0 | kernel-docs +5 | 4.12.14-197.83.1 | SUSE-SU-2021:0532-1 |
| SUSE Manager Retail Branch Server 4.0 | kernel-docs +4 | 4.12.14-197.83.1 | SUSE-SU-2021:0532-1 |
| SUSE Manager Proxy 4.0 | kernel-docs +4 | 4.12.14-197.83.1 | SUSE-SU-2021:0532-1 |
| SUSE Enterprise Storage 6 | kernel-docs +4 | 4.12.14-197.83.1 | SUSE-SU-2021:0532-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.2 | kernel-default-base | 5.3.18-lp152.63.1.lp152.8.21.1 | openSUSE-SU-2021:0241-1 |
| openSUSE Leap 15.2 | kernel-docs +8 | 5.3.18-lp152.63.1 | openSUSE-SU-2021:0241-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | perf +19 | 4.18.0-305.el8 | ELSA-2021-1578 |
Advisories 18
- ALSA-2021:1578 Important: kernel security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2021:1739 Red Hat Security Advisory: kernel-rt security and bug fix update Red Hat Security Advisories (RHSA) · Aug 7, 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-2021:0354-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0532-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0348-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0427-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0809-1 Security update for the Linux Kernel (Live Patch 21 for SLE 15 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0347-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0853-1 Security update for the Linux Kernel (Live Patch 9 for SLE 15 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0818-1 Security update for the Linux Kernel (Live Patch 20 for SLE 15 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0859-1 Security update for the Linux Kernel (Live Patch 12 for SLE 15 SP1) SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:0241-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0849-1 Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0353-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2021:0433-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · May 2, 2025
- WID-SEC-2022-1994 Google Android Patchday Januar BSI CERT-Bund (WID) · May 30, 2024
- ELSA-2021-1578 Important: kernel security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · May 25, 2021