Description
In the Linux kernel, the following vulnerability has been resolved:
USB: dwc3: fix memory leak with using debugfs_lookup()
When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time. To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.
Note, the root dentry for the debugfs directory for the device needs to
be saved so we don't have to keep looking it up, which required a bit
more refactoring to properly create and remove it when needed.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 4.19.196 – < 4.20, 5.4.128 – < 5.5, 5.10.46 – < 5.11, 5.12.13 – < 5.13, 5.13 | 4.20 |
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 | 5.15.0-1022.24 | — |
| Ubuntu 24.04 LTS | linux-intel +9 | No fix yet | — |
| Ubuntu 22.04 LTS | linux | 5.15.0-79.86 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1042.47 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1045.52 | — |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1045.52.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1039.47 | — |
| Ubuntu 22.04 LTS | linux-gke +1 | 5.15.0-1039.44 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1025.30 | — |
| Ubuntu 22.04 LTS | linux-ibm +1 | 5.15.0-1035.38 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1037.42 | — |
| Ubuntu 22.04 LTS | linux-lowlatency | 5.15.0-79.88 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1030.30 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra | 5.15.0-1016.16 | — |
| Ubuntu 22.04 LTS | linux-nvidia-tegra-igx | 5.15.0-1002.2 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1040.46 | — |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 22.04 LTS | linux-xilinx-zynqmp | 5.15.0-1025.29 | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1041.46~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1045.52~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1039.47~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 | 5.15.0-79.86~20.04.2 | — |
| Ubuntu 20.04 LTS | linux-ibm-5.15 | 5.15.0-1036.39~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1037.42~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-lowlatency-hwe-5.15 | 5.15.0-79.88~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1016.16~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1040.46~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1038.42~20.04.2 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
Show 6 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 | 5.15.0-1036.38 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1043.48 | — |
| Ubuntu Pro FIPS-updates 20.04 LTS | linux-fips +3 | No fix yet | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | linux-fips | No fix yet | — |
| Ubuntu Pro 20.04 LTS | linux +10 | No fix yet | — |
| Ubuntu Pro 18.04 LTS | linux-aws-5.4 +6 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | bpftool | 7.3.0-427.13.1.el9_4 | RHSA-2024:2394 |
| RHEL 9 | rv +64 | 5.14.0-427.13.1.el9_4 | RHSA-2024:2394 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP5 | kernel-64kb +6 | 5.14.21-150500.55.124.1 | SUSE-SU-2025:03615-1 |
| SLES 15 SP5 | kernel-default-base | 5.14.21-150500.55.124.1.150500.6.59.1 | SUSE-SU-2025:03615-1 |
| SLES 15 SP4 | kernel-64kb +6 | 5.14.21-150400.24.179.1 | SUSE-SU-2025:03628-1 |
| SLES 15 SP4 | kernel-default-base | 5.14.21-150400.24.179.1.150400.24.92.1 | SUSE-SU-2025:03628-1 |
Show 11 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 15 SP5 | kernel-default-base | 5.14.21-150500.55.124.1.150500.6.59.1 | SUSE-SU-2025:03615-1 |
| SLES for SAP 15 SP5 | kernel-docs +4 | 5.14.21-150500.55.124.1 | SUSE-SU-2025:03615-1 |
| SLES for SAP 15 SP4 | kernel-default-base | 5.14.21-150400.24.179.1.150400.24.92.1 | SUSE-SU-2025:03628-1 |
| SLES for SAP 15 SP4 | kernel-docs +4 | 5.14.21-150400.24.179.1 | SUSE-SU-2025:03628-1 |
| SLE Micro 5.5 | kernel-default-base | 5.14.21-150500.55.124.1.150500.6.59.1 | SUSE-SU-2025:03615-1 |
| SLE Micro 5.5 | kernel-rt +1 | 5.14.21-150500.13.109.1 | SUSE-SU-2025:3761-1 |
| SLE Micro 5.5 | kernel-source +1 | 5.14.21-150500.55.124.1 | SUSE-SU-2025:03615-1 |
| SLE Micro 5.4 | kernel-default | 5.14.21-150400.24.179.1 | SUSE-SU-2025:03628-1 |
| SLE Micro 5.4 | kernel-default-base | 5.14.21-150400.24.179.1.150400.24.92.1 | SUSE-SU-2025:03628-1 |
| SLE Micro 5.4 | kernel-rt +1 | 5.14.21-150400.15.133.1 | SUSE-SU-2025:3716-1 |
| SLE Micro 5.3 | kernel-default | 5.14.21-150400.24.179.1 | SUSE-SU-2025:03628-1 |
| SLE Micro 5.3 | kernel-default-base | 5.14.21-150400.24.179.1.150400.24.92.1 | SUSE-SU-2025:03628-1 |
| SLE Micro 5.3 | kernel-rt +1 | 5.14.21-150400.15.133.1 | SUSE-SU-2025:3716-1 |
| SLE Live Patching 15 SP5 | kernel-default | 5.14.21-150500.55.124.1 | SUSE-SU-2025:03615-1 |
| SLE Live Patching 15 SP5 | kernel-livepatch-SLE15-SP5_Update_31 | 1-150500.11.3.1 | SUSE-SU-2025:03615-1 |
| SLE Live Patching 15 SP4 | kernel-default | 5.14.21-150400.24.179.1 | SUSE-SU-2025:03628-1 |
| SLE Live Patching 15 SP4 | kernel-livepatch-SLE15-SP4_Update_45 | 1-150400.9.3.1 | SUSE-SU-2025:03628-1 |
| SLE HPC 15 SP5 | kernel-64kb +5 | 5.14.21-150500.55.124.1 | SUSE-SU-2025:03615-1 |
| SLE HPC 15 SP5 | kernel-default-base | 5.14.21-150500.55.124.1.150500.6.59.1 | SUSE-SU-2025:03615-1 |
| SLE HPC 15 SP4 | kernel-64kb +5 | 5.14.21-150400.24.179.1 | SUSE-SU-2025:03628-1 |
| SLE HPC 15 SP4 | kernel-default-base | 5.14.21-150400.24.179.1.150400.24.92.1 | SUSE-SU-2025:03628-1 |
| SUSE Manager Server LTS 4.3 | kernel-default-base | 5.14.21-150400.24.179.1.150400.24.92.1 | SUSE-SU-2025:03628-1 |
| SUSE Manager Server LTS 4.3 | kernel-syms +3 | 5.14.21-150400.24.179.1 | SUSE-SU-2025:03628-1 |
| SUSE Manager Proxy LTS 4.3 | kernel-default-base | 5.14.21-150400.24.179.1.150400.24.92.1 | SUSE-SU-2025:03628-1 |
| SUSE Manager Proxy LTS 4.3 | kernel-syms +2 | 5.14.21-150400.24.179.1 | SUSE-SU-2025:03628-1 |
Advisories 6
- WID-SEC-2025-2092 Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Nov 9, 2026
- RHSA-2024:2394 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- SUSE-SU-2025:03615-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:3761-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:03628-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:3716-1 Security update for the Linux Kernel SUSE / openSUSE Security Updates · Feb 4, 2026