# CVE-2025-68734: linux: In the Linux kernel, the following vulnerability has been resolved:  isdn: mISDN: hfcsusb: fix memory leak in hfcsusb...

CVE-2025-68734 is fixed in 39 products on 1 platform, first by DEBIAN-CVE-2025-68734, released December 24, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2025-68734
- Priority: Routine
- CVSS: 5.5 (IMPORTANT)
- EPSS: 0.0020
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 24, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  isdn: mISDN: hfcsusb: fix memory leak in hfcsusb_probe()  In hfcsusb_probe(), the memory allocated for ctrl_urb gets leaked when setup_instance() fails with an error code. Fix that by freeing the urb before freeing the hw structure. Also change the error paths to use the goto ladder style.  Compile tested only. Issue found using a prototype static analysis tool.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | bpftool ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | bpftool ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | dtb-aarch64 opensuse-leap 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-64kb opensuse-leap 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-64kb sles 15.7 | 6.4.0-150700.53.28.1 | [SUSE-SU-2026:0315-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0315-1.md) | Jan 28, 2026 |
| Linux | kernel-azure sles 15.7 | 6.4.0-150700.20.24.1 | [SUSE-SU-2026:0281-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0281-1.md) | Jan 23, 2026 |
| Linux | kernel-debug opensuse-leap 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-default opensuse-leap 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-default sles 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-default sles 15.7 | 6.4.0-150700.53.28.1 | [SUSE-SU-2026:0315-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0315-1.md) | Jan 28, 2026 |
| Linux | kernel-default-base opensuse-leap 15.6 | 6.4.0-150600.23.84.1.150600.12.38.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-default-base sles 15.6 | 6.4.0-150600.23.84.1.150600.12.38.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-default-base sles 15.7 | 6.4.0-150700.53.28.1.150700.17.19.1 | [SUSE-SU-2026:0315-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0315-1.md) | Jan 28, 2026 |
| Linux | kernel-docs opensuse-leap 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-docs sles 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-docs sles 15.7 | 6.4.0-150700.53.28.1 | [SUSE-SU-2026:0315-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0315-1.md) | Jan 28, 2026 |
| Linux | kernel-kvmsmall opensuse-leap 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-livepatch-SLE15-SP6_Update_19 sles 15.6 | 1-150600.13.3.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-livepatch-SLE15-SP7-RT_Update_8 sles 15.7 | 1-150700.1.3.1 | [SUSE-SU-2026:0278-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0278-1.md) | Jan 23, 2026 |
| Linux | kernel-livepatch-SLE15-SP7_Update_8 sles 15.7 | 1-150700.15.3.1 | [SUSE-SU-2026:0315-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0315-1.md) | Jan 28, 2026 |
| Linux | kernel-obs-build opensuse-leap 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-obs-build sles 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-obs-build sles 15.7 | 6.4.0-150700.53.28.1 | [SUSE-SU-2026:0315-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0315-1.md) | Jan 28, 2026 |
| Linux | kernel-obs-qa opensuse-leap 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-source opensuse-leap 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-source sles 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-source sles 15.7 | 6.4.0-150700.53.28.1 | [SUSE-SU-2026:0315-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0315-1.md) | Jan 28, 2026 |
| Linux | kernel-source-azure sles 15.7 | 6.4.0-150700.20.24.1 | [SUSE-SU-2026:0281-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0281-1.md) | Jan 23, 2026 |
| Linux | kernel-syms opensuse-leap 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-syms sles 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-syms sles 15.7 | 6.4.0-150700.53.28.1 | [SUSE-SU-2026:0315-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0315-1.md) | Jan 28, 2026 |
| Linux | kernel-syms-azure sles 15.7 | 6.4.0-150700.20.24.1 | [SUSE-SU-2026:0281-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0281-1.md) | Jan 23, 2026 |
| Linux | kernel-uek ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek ol 8 | 0:5.4.17-2136.352.5.el7uek | [ELSA-2026-50100](https://patchblox.com/security/data/fix/linux/elsa-2026-50100.md) | Feb 7, 2026 |
| Linux | kernel-uek ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-container ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-container ol 8 | 0:5.4.17-2136.352.5.el7uek | [ELSA-2026-50100](https://patchblox.com/security/data/fix/linux/elsa-2026-50100.md) | Feb 7, 2026 |
| Linux | kernel-uek-container ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-container-debug ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-container-debug ol 8 | 0:5.4.17-2136.352.5.el7uek | [ELSA-2026-50100](https://patchblox.com/security/data/fix/linux/elsa-2026-50100.md) | Feb 7, 2026 |
| Linux | kernel-uek-container-debug ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-core ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-core ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-debug ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-debug ol 8 | 0:5.4.17-2136.352.5.el7uek | [ELSA-2026-50100](https://patchblox.com/security/data/fix/linux/elsa-2026-50100.md) | Feb 7, 2026 |
| Linux | kernel-uek-debug ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-debug-core ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-debug-core ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-debug-devel ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-debug-devel ol 8 | 0:5.4.17-2136.352.5.el7uek | [ELSA-2026-50100](https://patchblox.com/security/data/fix/linux/elsa-2026-50100.md) | Feb 7, 2026 |
| Linux | kernel-uek-debug-devel ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-debug-modules ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-debug-modules ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-debug-modules-extra ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-debug-modules-extra ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-devel ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-devel ol 8 | 0:5.4.17-2136.352.5.el7uek | [ELSA-2026-50100](https://patchblox.com/security/data/fix/linux/elsa-2026-50100.md) | Feb 7, 2026 |
| Linux | kernel-uek-devel ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-doc ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-doc ol 8 | 0:5.4.17-2136.352.5.el7uek | [ELSA-2026-50100](https://patchblox.com/security/data/fix/linux/elsa-2026-50100.md) | Feb 7, 2026 |
| Linux | kernel-uek-doc ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-modules ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-modules ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-modules-extra ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-modules-extra ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek-tools ol 8 | 0:5.4.17-2136.352.5.el7uek | [ELSA-2026-50100](https://patchblox.com/security/data/fix/linux/elsa-2026-50100.md) | Feb 7, 2026 |
| Linux | kernel-uek64k ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek64k ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek64k-core ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek64k-core ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek64k-devel ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek64k-devel ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek64k-modules ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek64k-modules ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek64k-modules-extra ol 8 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-uek64k-modules-extra ol 9 | 0:5.15.0-317.197.5.1.el9uek | [ELSA-2026-50113](https://patchblox.com/security/data/fix/linux/elsa-2026-50113.md) | Feb 15, 2026 |
| Linux | kernel-zfcpdump opensuse-leap 15.6 | 6.4.0-150600.23.84.1 | [SUSE-SU-2026:0293-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0293-1.md) | Jan 26, 2026 |
| Linux | kernel-zfcpdump sles 15.7 | 6.4.0-150700.53.28.1 | [SUSE-SU-2026:0315-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-0315-1.md) | Jan 28, 2026 |
| Linux | linux Debian 12.15 (bookworm) | 6.1.159-1 | [DEBIAN-CVE-2025-68734](https://patchblox.com/security/data/fix/linux/debian-cve-2025-68734.md) | Dec 24, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.12.63-1 | [DEBIAN-CVE-2025-68734](https://patchblox.com/security/data/fix/linux/debian-cve-2025-68734.md) | Dec 24, 2025 |
| Linux | linux Debian 14 | 6.17.9-1 | [DEBIAN-CVE-2025-68734](https://patchblox.com/security/data/fix/linux/debian-cve-2025-68734.md) | Dec 24, 2025 |

---

Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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