Improper Resource Shutdown or Release in Linux kernel - CVE-2026-23289
Published: March 25, 2026
Vulnerability identifier: #VU124580
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-23289
CWE-ID: CWE-404
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to improper resource management in the IB/mthca subsystem when handling system calls. A local user can trigger a failed system call path to disclose sensitive information.
The issue arises from a missing mthca_unmap_user_db() call during error handling in mthca_create_srq(), leading to a resource leak that could expose system memory.
How to mitigate CVE-2026-23289
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/117942ca43e2e3c3d121faae530989931b7f67e1
- https://git.kernel.org/stable/c/972b72d7e2d8fe1400f1c7a8304c282c539b7e02
- https://git.kernel.org/stable/c/d0148965dbca8cc8efa7e3d6e99940487bf661c0
- https://git.kernel.org/stable/c/da8eaa73bc37d004350ba68eb18b6ade8e49db52
- https://git.kernel.org/stable/c/deee46b37ebd8cc5ff810127883fca90f2412a7b
- https://git.kernel.org/stable/c/f67f1ad4029e9fa183141546de31987b254c9292