CVE-2025-68734
Published Dec 24, 2025
Modified Apr 15, 2026
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.
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References
Other References
https://git.kernel.org/stable/c/03695541b3349bc40bf5d6563d44d6147fb20260
https://git.kernel.org/stable/c/3f7c72bc73c4e542fde14cce017549d8a0b61a3c
https://git.kernel.org/stable/c/3f978e3f1570155a1327ffa25f60968bc7b9398f
https://git.kernel.org/stable/c/475032fa2bb82ffb592c321885e917e39f47357f
https://git.kernel.org/stable/c/6dce43433e0635e7b00346bc937b69ce48ea71bb
https://git.kernel.org/stable/c/adb7577e23a431fc53aa1b6107733c0d751015fb
https://git.kernel.org/stable/c/b70c24827e11fdc71465f9207e974526fb457bb9
https://git.kernel.org/stable/c/ea7936304ed74ab7f965d17f942a173ce91a5ca8
Frequently Asked Questions
What is CVE-2025-68734? +
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.
How do I check if I'm vulnerable to CVE-2025-68734? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.