SB2025122677 - Memory leak in Linux kernel hardware mISDN driver
Published: December 26, 2025
Security Bulletin ID
SB2025122677
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Memory leak (CVE-ID: CVE-2025-68734)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the setup_instance() and hfcsusb_probe() functions in drivers/isdn/hardware/mISDN/hfcsusb.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
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