Missing Release of Resource after Effective Lifetime in Linux kernel - CVE-2026-89982
Published: September 16, 2026
Vulnerability identifier: #VU150300
CSH Severity: Low
CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89982
CWE-ID: CWE-772
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a memory leak.
The vulnerability exists due to missing release of a Device Tree channel node reference in i2c_mux_add_adapter() when adapter registration fails. A local user can trigger an adapter registration failure to cause a memory leak.
Affected software
Linux kernel
How to mitigate CVE-2026-89982
Install security update from vendor's repository.
External References
- https://git.kernel.org/stable/c/0927153f2abf48b6cc3e5f27063a17f7a8d47f38
- https://git.kernel.org/stable/c/2b3b06cb709c4bf75a3fe3da3a0ca368ee3b40e5
- https://git.kernel.org/stable/c/385c7af4e3b95d0769fd211831674e83b16a2ebf
- https://git.kernel.org/stable/c/4c9bc46a2a4afb7a11c48d33bdf19febab431015
- https://git.kernel.org/stable/c/4f42f70afd2447f3c82ca69d1e03466a75348ba9
- https://git.kernel.org/stable/c/694e7e6edf249723ca7d3ef77c2ca1badfc78dc4
- https://git.kernel.org/stable/c/b580f062b24c4eef562f08f210c028adb34ef14e
- https://git.kernel.org/stable/c/dd2c1e6747b17b24ecddd48a7bb6bb964c2793d1