Description
A use-after-free vulnerability in the Linux Kernel io_uring system can be exploited to achieve local privilege escalation.
The io_file_get_fixed function lacks the presence of ctx->uring_lock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered.
We recommend upgrading past commit da24142b1ef9fd5d36b76e36bab328a5b27523e8.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux Kernel | 5.7 – ≤ 5.17 | — |
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 | 5.17.3-1 | — |
| Debian 13 | linux | 5.17.3-1 | — |
| Debian 12 | linux | 5.17.3-1 | — |
| Debian 10 | linux-5.10 | 5.10.178-3~deb10u1 | DLA-3404-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1017.19 | — |
| Ubuntu 24.04 LTS | linux-raspi-realtime | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-71.78 | USN-6044-1 |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1035.39 | USN-6044-1 |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1037.44 | USN-6044-1 |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1037.44.1 | USN-6051-1 |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1034.42 | — |
| Ubuntu 22.04 LTS | linux-gke +1 | 5.15.0-1032.37 | USN-6051-1, USN-6044-1 |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1019.24 | USN-6044-1 |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1029.32 | USN-6044-1 |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1030.35 | USN-6133-1 |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1023.23 | — |
| Ubuntu 22.04 LTS | linux-oem-5.17 | 5.17.0-1004.4 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1034.40 | USN-6044-1 |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1028.30 | USN-6070-1 |
| Ubuntu 22.04 LTS | linux-riscv +2 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1035.39~20.04.1 | USN-6044-1 |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1037.44~20.04.1 | USN-6051-1 |
| Ubuntu 20.04 LTS | linux-azure-fde-5.15 | 5.15.0-1037.44~20.04.1.1 | USN-6070-1 |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1033.41~20.04.1 | USN-6107-1 |
| Ubuntu 20.04 LTS | linux-gke-5.15 | 5.15.0-1032.37~20.04.1 | USN-6044-1 |
| Ubuntu 20.04 LTS | linux-gkeop-5.15 | 5.15.0-1019.24~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-71.78~20.04.1 | USN-6044-1 |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1030.35~20.04.1 | USN-6134-1 |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1034.40~20.04.1 | USN-6044-1 |
| Ubuntu 20.04 LTS | linux-riscv +24 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1032.36~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +13 | No fix yet | — |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1028.33 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1037.40 | — |
| Ubuntu Pro 22.04 LTS | linux +1 | 5.15.0-73.80 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 22.04 LTS | linux-aws | 5.15.0-1037.41 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 22.04 LTS | linux-aws-6.5 +1 | 6.5.0-1016.16~22.04.1 | LSN-0102-1 |
| Ubuntu Pro 22.04 LTS | linux-azure | 5.15.0-1039.46 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 22.04 LTS | linux-azure-6.5 | 6.5.0-1017.17~22.04.1 | LSN-0102-1 |
| Ubuntu Pro 22.04 LTS | linux-gcp | 5.15.0-1035.43 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 22.04 LTS | linux-gke | 5.15.0-1034.39 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 22.04 LTS | linux-hwe-6.5 | 6.5.0-26.26~22.04.1 | LSN-0102-1 |
| Ubuntu Pro 22.04 LTS | linux-ibm | 5.15.0-1031.34 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 20.04 LTS | linux | 5.4.0-150.167 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 20.04 LTS | linux-aws | 5.4.0-1103.111 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 20.04 LTS | linux-aws-5.15 | 5.15.0-1037.41~20.04.1 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 20.04 LTS | linux-azure | 5.4.0-1109.115 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 20.04 LTS | linux-gcp | 5.4.0-1106.115 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 20.04 LTS | linux-gcp-5.15 | 5.15.0-1035.43~20.04.1 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 20.04 LTS | linux-gke | 5.4.0-1100.107 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 20.04 LTS | linux-gke-5.15 | 5.15.0-1032.37~20.04.1 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 20.04 LTS | linux-gkeop | 5.4.0-1070.74 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-101.111~20.04.1 | LSN-0102-1 |
| Ubuntu Pro 20.04 LTS | linux-ibm | 5.4.0-1050.55 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 20.04 LTS | linux-ibm-5.15 | 5.15.0-1049.52~20.04.1 | LSN-0102-1 |
| Ubuntu Pro 18.04 LTS | linux | 4.15.0-223.235 | LSN-0102-1 |
| Ubuntu Pro 18.04 LTS | linux-aws | 4.15.0-1166.179 | LSN-0102-1 |
| Ubuntu Pro 18.04 LTS | linux-aws-5.4 | 5.4.0-1103.111~18.04.1 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 18.04 LTS | linux-azure-4.15 | 4.15.0-1175.190 | LSN-0102-1 |
| Ubuntu Pro 18.04 LTS | linux-azure-5.4 | 5.4.0-1109.115~18.04.1 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 18.04 LTS | linux-gcp-4.15 | 4.15.0-1160.177 | LSN-0102-1 |
| Ubuntu Pro 18.04 LTS | linux-gcp-5.4 | 5.4.0-1106.115~18.04.1 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 18.04 LTS | linux-gke-5.4 +1 | No fix yet | LSN-0095-1 |
| Ubuntu Pro 18.04 LTS | linux-hwe-5.4 | 5.4.0-150.167~18.04.1 | LSN-0102-1, LSN-0095-1 |
| Ubuntu Pro 18.04 LTS | linux-ibm-5.4 | 5.4.0-1050.55~18.04.1 | LSN-0095-1 |
| Ubuntu Pro 16.04 LTS | linux | 4.4.0-252.286 | LSN-0102-1 |
| Ubuntu Pro 16.04 LTS | linux-aws | 4.4.0-1167.182 | LSN-0102-1 |
| Ubuntu Pro 16.04 LTS | linux-aws-hwe | 4.15.0-1166.179~16.04.1 | LSN-0102-1 |
| Ubuntu Pro 16.04 LTS | linux-azure | 4.15.0-1175.190~16.04.1 | LSN-0102-1 |
| Ubuntu Pro 16.04 LTS | linux-gcp | 4.15.0-1160.177~16.04.1 | LSN-0102-1 |
| Ubuntu Pro 16.04 LTS | linux-hwe | 4.15.0-223.235~16.04.1 | LSN-0102-1 |
| Ubuntu Pro 14.04 LTS | linux-lts-xenial | 4.4.0-252.286~14.04.1 | LSN-0102-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP3 | kernel-64kb +6 | 5.3.18-150300.59.121.2 | SUSE-SU-2023:2148-1 |
| SLES 15 SP3 | kernel-default-base | 5.3.18-150300.59.121.2.150300.18.70.2 | SUSE-SU-2023:2148-1 |
| SLES 15 SP3 | kernel-syms | 5.3.18-150300.59.121.1 | SUSE-SU-2023:2148-1 |
| SLES 15 SP2 | kernel-default-base | 5.3.18-150200.24.151.1.150200.9.73.1 | SUSE-SU-2023:2146-1 |
| SLES 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.151.1 | SUSE-SU-2023:2146-1 |
Show 14 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP3 | kernel-default-base | 5.3.18-150300.59.121.2.150300.18.70.2 | SUSE-SU-2023:2148-1 |
| SLES for SAP 15 SP3 | kernel-docs +4 | 5.3.18-150300.59.121.2 | SUSE-SU-2023:2148-1 |
| SLES for SAP 15 SP3 | kernel-syms | 5.3.18-150300.59.121.1 | SUSE-SU-2023:2148-1 |
| SLES for SAP 15 SP2 | kernel-default-base | 5.3.18-150200.24.151.1.150200.9.73.1 | SUSE-SU-2023:2146-1 |
| SLES for SAP 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.151.1 | SUSE-SU-2023:2146-1 |
| SLE Real Time 15 SP3 | kernel-default-base | 5.3.18-150300.59.121.2.150300.18.70.2 | SUSE-SU-2023:2148-1 |
| SLE Real Time 15 SP3 | kernel-docs +4 | 5.3.18-150300.59.121.2 | SUSE-SU-2023:2148-1 |
| SLE Real Time 15 SP3 | kernel-syms | 5.3.18-150300.59.121.1 | SUSE-SU-2023:2148-1 |
| SLE Micro 5.2 | kernel-default | 5.3.18-150300.59.121.2 | SUSE-SU-2023:2148-1 |
| SLE Micro 5.2 | kernel-default-base | 5.3.18-150300.59.121.2.150300.18.70.2 | SUSE-SU-2023:2148-1 |
| SLE Micro 5.2 | kernel-rt | 5.3.18-150300.127.1 | SUSE-SU-2023:2147-1 |
| SLE Micro 5.1 | kernel-default | 5.3.18-150300.59.121.2 | SUSE-SU-2023:2148-1 |
| SLE Micro 5.1 | kernel-default-base | 5.3.18-150300.59.121.2.150300.18.70.2 | SUSE-SU-2023:2148-1 |
| SLE Micro 5.1 | kernel-rt | 5.3.18-150300.127.1 | SUSE-SU-2023:2147-1 |
| SLE Live Patching 15 SP3 | kernel-default | 5.3.18-150300.59.121.2 | SUSE-SU-2023:2148-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_19 | 14-150300.2.3 | SUSE-SU-2023:2405-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_23 | 11-150300.2.3 | SUSE-SU-2023:2423-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_28 | 5-150300.2.3 | SUSE-SU-2023:2416-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_31 | 2-150300.2.3 | SUSE-SU-2023:2401-1 |
| SLE Live Patching 15 SP3 | kernel-livepatch-SLE15-SP3_Update_32 | 1-150300.7.3.2 | SUSE-SU-2023:2148-1 |
| SLE Live Patching 15 SP2 | kernel-default | 5.3.18-150200.24.151.1 | SUSE-SU-2023:2146-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_29 | 11-150200.2.3 | SUSE-SU-2023:2405-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_32 | 5-150200.2.3 | SUSE-SU-2023:2448-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_35 | 2-150200.2.3 | SUSE-SU-2023:2401-1 |
| SLE Live Patching 15 SP2 | kernel-livepatch-SLE15-SP2_Update_36 | 1-150200.5.3.1 | SUSE-SU-2023:2146-1 |
| SLE HPC 15 SP3 | kernel-64kb +5 | 5.3.18-150300.59.121.2 | SUSE-SU-2023:2148-1 |
| SLE HPC 15 SP3 | kernel-default-base | 5.3.18-150300.59.121.2.150300.18.70.2 | SUSE-SU-2023:2148-1 |
| SLE HPC 15 SP3 | kernel-syms | 5.3.18-150300.59.121.1 | SUSE-SU-2023:2148-1 |
| SLE HPC 15 SP2 | kernel-default-base | 5.3.18-150200.24.151.1.150200.9.73.1 | SUSE-SU-2023:2146-1 |
| SLE HPC 15 SP2 | kernel-docs +5 | 5.3.18-150200.24.151.1 | SUSE-SU-2023:2146-1 |
| SUSE Real Time Module 15 SP3 | kernel-rt +3 | 5.3.18-150300.127.1 | SUSE-SU-2023:2147-1 |
| SUSE Manager Server 4.2 | kernel-default-base | 5.3.18-150300.59.121.2.150300.18.70.2 | SUSE-SU-2023:2148-1 |
| SUSE Manager Server 4.2 | kernel-source +3 | 5.3.18-150300.59.121.2 | SUSE-SU-2023:2148-1 |
| SUSE Manager Proxy 4.2 | kernel-default-base | 5.3.18-150300.59.121.2.150300.18.70.2 | SUSE-SU-2023:2148-1 |
| SUSE Manager Proxy 4.2 | kernel-source +2 | 5.3.18-150300.59.121.2 | SUSE-SU-2023:2148-1 |
| SUSE Enterprise Storage 7.1 | kernel-64kb +5 | 5.3.18-150300.59.121.2 | SUSE-SU-2023:2148-1 |
| SUSE Enterprise Storage 7.1 | kernel-default-base | 5.3.18-150300.59.121.2.150300.18.70.2 | SUSE-SU-2023:2148-1 |
| SUSE Enterprise Storage 7.1 | kernel-syms | 5.3.18-150300.59.121.1 | SUSE-SU-2023:2148-1 |
| SUSE Enterprise Storage 7 | kernel-default-base | 5.3.18-150200.24.151.1.150200.9.73.1 | SUSE-SU-2023:2146-1 |
| SUSE Enterprise Storage 7 | kernel-docs +5 | 5.3.18-150200.24.151.1 | SUSE-SU-2023:2146-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.4 | dtb-aarch64 | 5.3.18-150300.59.121.1 | SUSE-SU-2023:2148-1 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | kernel | 5.15.111.1-1 | — |
Advisories 18
- USN-6134-1 linux-intel-iotg-5.15 vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6133-1 linux-intel-iotg vulnerabilities Ubuntu Security Notices (USN) · Oct 23, 2026
- USN-6051-1 linux-azure-5.15, linux-azure-fde, linux-kvm vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-6044-1 linux, linux-aws, linux-aws-5.15, linux-azure, linux-gke, linux-gke-5.15, linux-gkeop, linux-hwe-5.15, linux-ibm, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-oracle, linux-oracle-5.15 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-6107-1 linux-gcp-5.15 vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- LSN-0095-1 Kernel Live Patch Security Notice Ubuntu Security Notices (USN) · Jun 3, 2026
- USN-6070-1 linux-azure-fde-5.15, linux-raspi vulnerabilities Ubuntu Security Notices (USN) · Jun 3, 2026
- LSN-0102-1 Kernel Live Patch Security Notice Ubuntu Security Notices (USN) · Jun 3, 2026
- DLA-3404-1 linux-5.10 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2023:2401-1 Security update for the Linux Kernel (Live Patch 31 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2423-1 Security update for the Linux Kernel (Live Patch 23 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2146-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2148-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2448-1 Security update for the Linux Kernel (Live Patch 32 for SLE 15 SP2) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2405-1 Security update for the Linux Kernel (Live Patch 19 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2147-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2023:2416-1 Security update for the Linux Kernel (Live Patch 28 for SLE 15 SP3) SUSE / openSUSE Security Updates · Feb 4, 2026
- WID-SEC-2023-0956 Linux Kernel: Schwachstelle ermöglicht Privilegieneskalation BSI CERT-Bund (WID) · Apr 3, 2024
References
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=08681391b84da27133deefaaddefd0acfa90c2be
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=da24142b1ef9fd5d36b76e36bab328a5b27523e8
- https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- https://security.netapp.com/advisory/ntap-20230601-0002/
- http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html