CVE-2025-68734
isdn: mISDN: hfcsusb: fix memory leak in hfcsusb_probe()
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.
INFO
Published Date :
Dec. 24, 2025, 11:16 a.m.
Last Modified :
Dec. 24, 2025, 11:16 a.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2025-68734
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Apply the kernel patch for the mISDN HFCSUSB driver.
- Ensure all allocated URBs are freed on error paths.
- Update the Linux kernel to the patched version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-68734.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-68734 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-68734
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-68734 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-68734 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Dec. 24, 2025
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/03695541b3349bc40bf5d6563d44d6147fb20260 Added Reference https://git.kernel.org/stable/c/3f7c72bc73c4e542fde14cce017549d8a0b61a3c Added Reference https://git.kernel.org/stable/c/3f978e3f1570155a1327ffa25f60968bc7b9398f Added Reference https://git.kernel.org/stable/c/475032fa2bb82ffb592c321885e917e39f47357f Added Reference https://git.kernel.org/stable/c/6dce43433e0635e7b00346bc937b69ce48ea71bb Added Reference https://git.kernel.org/stable/c/adb7577e23a431fc53aa1b6107733c0d751015fb Added Reference https://git.kernel.org/stable/c/b70c24827e11fdc71465f9207e974526fb457bb9 Added Reference https://git.kernel.org/stable/c/ea7936304ed74ab7f965d17f942a173ce91a5ca8