#VU124491 NULL Pointer Dereference in Linux kernel - CVE-2026-23348
Published: March 25, 2026
Vulnerability identifier: #VU124491
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-23348
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a race condition in the nvdimm_bus object handling within the CXL (Compute Express Link) subsystem when creating nvdimm objects. A local user can trigger a NULL pointer dereference by exploiting the race condition during device probing, leading to a kernel crash.
The issue arises when the nvdimm_bus object is missing during device registration, causing an invalid access to a null parent pointer in __nd_device_register().
Remediation
Install security update from vendor's repository.