NULL pointer dereference in Linux kernel - CVE-2026-64147
Published: July 20, 2026
Vulnerability identifier: #VU138484
CSH Severity: Low
CVSS v4.0: 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-2026-64147
CWE-ID: CWE-476
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 cause a denial of service.
The vulnerability exists due to improper handling of error pointers and a missing reference release in pds_core debugfs handling when performing firmware reset recovery or checking for an existing debugfs entry. A local user can trigger the vulnerable code path to cause a denial of service.
The crash condition occurs when CONFIG_DEBUG_FS is disabled.
How to mitigate CVE-2026-64147
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/26e19622c485e53c3fdb299e822068a0542ddf0c
- https://git.kernel.org/stable/c/60ef1675b652e912f3eb064767af4432393291fd
- https://git.kernel.org/stable/c/91d13e92b983e6c6d7631012c2e20ae8057de9f2
- https://git.kernel.org/stable/c/d7f4dd4c8fb380898fef7a77d48fce7ccdb4fc32
- https://git.kernel.org/stable/c/dc416e32baaeb620b9809e9e25fc7b30889686e9