Description
In the Linux kernel, the following vulnerability has been resolved:
udf: Detect system inodes linked into directory hierarchy
When UDF filesystem is corrupted, hidden system inodes can be linked
into directory hierarchy which is an avenue for further serious
corruption of the filesystem and kernel confusion as noticed by syzbot
fuzzed images. Refuse to access system inodes linked into directory
hierarchy and vice versa.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 3.17.2 – < 3.18, 3.18 | 3.18 |
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 | 6.1.20-1 | — |
| Debian 13 | linux | 6.1.20-1 | — |
| Debian 12 | linux | 6.1.20-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1019.21 | — |
| Ubuntu 24.04 LTS | linux-riscv +8 | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-75.82 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1038.43 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1040.47 | — |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1041.48.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1036.44 | — |
| Ubuntu 22.04 LTS | linux-gke | 5.15.0-1036.41 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1022.27 | — |
| Ubuntu 22.04 LTS | linux-ibm +1 | 5.15.0-1032.35 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1033.38 | — |
| Ubuntu 22.04 LTS | linux-kvm | 5.15.0-1035.40 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1027.27 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1015.15 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1037.43 | — |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 20.04 LTS | linux | 5.4.0-152.169 | — |
| Ubuntu 20.04 LTS | linux-aws | 5.4.0-1104.112 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1038.43~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure | 5.4.0-1110.116 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1040.47~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-bluefield | 5.4.0-1065.71 | — |
| Ubuntu 20.04 LTS | linux-gcp | 5.4.0-1107.116 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1036.44~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-75.82~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-ibm | 5.4.0-1051.56 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1033.38~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-iot | 5.4.0-1017.18 | — |
| Ubuntu 20.04 LTS | linux-kvm | 5.4.0-1093.99 | — |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1015.15~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle | 5.4.0-1103.112 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1037.43~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-raspi | 5.4.0-1088.99 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1035.39~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-xilinx-zynqmp | 5.4.0-1024.28 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
Show 12 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 | 5.15.0-1033.35 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1040.45 | — |
| Ubuntu Pro FIPS 20.04 LTS | linux-fips +3 | 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 | 5.4.0-1104.112+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-azure-fips | 5.4.0-1110.116+fips1 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips | 5.4.0-1079.88 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-gcp-fips | 5.4.0-1107.116+fips1 | — |
| Ubuntu Pro FIPS-updates 18.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-updates 16.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux +5 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux-aws-5.4 | 5.4.0-1104.112~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-azure-5.4 | 5.4.0-1110.116~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-gcp-5.4 | 5.4.0-1107.116~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-hwe-5.4 | 5.4.0-152.169~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-ibm-5.4 | 5.4.0-1051.56~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-oracle-5.4 | 5.4.0-1103.112~18.04.1 | — |
| Ubuntu Pro 18.04 LTS | linux-raspi-5.4 | 5.4.0-1088.99~18.04.1 | — |
| Ubuntu Pro 16.04 LTS | linux +7 | No fix yet | — |
| Ubuntu Pro 14.04 LTS | linux-aws +2 | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.127.1 | SUSE-SU-2025:4320-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.127.1.150500.6.61.1 | SUSE-SU-2025:4320-1 |
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.184.1.150400.24.94.2 | SUSE-SU-2025:4111-1 |
| SLES 12 SP5 | kernel-syms +2 | 4.12.14-122.280.1 | SUSE-SU-2025:4189-1 |
Show 12 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | kernel-default-base | 5.14.21-150500.55.127.1.150500.6.61.1 | SUSE-SU-2025:4320-1 |
| SLES for SAP 15 SP5 | kernel-docs +4 | 5.14.21-150500.55.127.1 | SUSE-SU-2025:4320-1 |
| SLES for SAP 15 SP4 | kernel-default-base | 5.14.21-150400.24.184.1.150400.24.94.2 | SUSE-SU-2025:4111-1 |
| SLES for SAP 15 SP4 | kernel-docs +4 | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.127.1.150500.6.61.1 | SUSE-SU-2025:4320-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.112.1 | SUSE-SU-2025:4149-1 |
| SLE Micro 5.5 | kernel-source +1 | 5.14.21-150500.55.127.1 | SUSE-SU-2025:4320-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.184.1.150400.24.94.2 | SUSE-SU-2025:4111-1 |
| SLE Micro 5.4 | kernel-rt +1 | 5.14.21-150400.15.136.1 | SUSE-SU-2025:4139-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.184.1.150400.24.94.2 | SUSE-SU-2025:4111-1 |
| SLE Micro 5.3 | kernel-rt +1 | 5.14.21-150400.15.136.1 | SUSE-SU-2025:4139-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.127.1 | SUSE-SU-2025:4320-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_32 | 1-150500.11.3.1 | SUSE-SU-2025:4320-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_46 | 1-150400.9.5.1 | SUSE-SU-2025:4111-1 |
| SLE Live Patching 12 SP5 | kernel-default | 4.12.14-122.280.1 | SUSE-SU-2025:4189-1 |
| SLE Live Patching 12 SP5 | kgraft-patch-SLE12-SP5_Update_74 | 1-8.5.1 | SUSE-SU-2025:4189-1 |
| SLE HPC 15 SP5 | kernel-64kb +5 | 5.14.21-150500.55.127.1 | SUSE-SU-2025:4320-1 |
| SLE HPC 15 SP5 | kernel-default-base | 5.14.21-150500.55.127.1.150500.6.61.1 | SUSE-SU-2025:4320-1 |
| SLE HPC 15 SP4 | kernel-64kb +5 | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
| SLE HPC 15 SP4 | kernel-default-base | 5.14.21-150400.24.184.1.150400.24.94.2 | SUSE-SU-2025:4111-1 |
| SUSE Manager Server LTS 4.3 | kernel-default-base | 5.14.21-150400.24.184.1.150400.24.94.2 | SUSE-SU-2025:4111-1 |
| SUSE Manager Server LTS 4.3 | kernel-syms +3 | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
| SUSE Manager Proxy LTS 4.3 | kernel-default-base | 5.14.21-150400.24.184.1.150400.24.94.2 | SUSE-SU-2025:4111-1 |
| SUSE Manager Proxy LTS 4.3 | kernel-syms +2 | 5.14.21-150400.24.184.1 | SUSE-SU-2025:4111-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | kernel-livepatch-6.1.19-30.43 | 1.0-0.amzn2023 | ALAS2023-2023-138 |
| Amazon Linux 2023 | perf +12 | 6.1.19-30.43.amzn2023 | ALAS2023-2023-138 |
Advisories 8
- WID-SEC-2025-2394 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 9, 2026
- WID-SEC-2026-0349 Dell Avamar und NetWorker: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 17, 2026
- SUSE-SU-2025:4139-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4149-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4189-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:4111-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Mar 23, 2026
- ALAS2023-2023-138 Important: kernel security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Feb 8, 2026
- SUSE-SU-2025:4320-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://git.kernel.org/stable/c/1dc71eeb198a8daa17d0c995998a53b0b749a158
- https://git.kernel.org/stable/c/d747b31e2925a2f384e7dd1901a2e5bc5f984ed8
- https://git.kernel.org/stable/c/a44ec34b90440ada190924f5908b97026504fdcd
- https://git.kernel.org/stable/c/37e74003d81e79457535cbbdfa1603431c03fac0
- https://git.kernel.org/stable/c/1f328751b65c49c13a312d67a3bf27766b85baf7
- https://git.kernel.org/stable/c/9e3b5ef7d02eaa6553e79b4af9bd99227280f245
- https://git.kernel.org/stable/c/85a37983ec69cc9fcd188bc37c4de15ee326355a