NULL pointer dereference in Linux kernel - CVE-2026-43413
Published: May 8, 2026
Vulnerability identifier: #VU130765
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-2026-43413
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 a NULL pointer dereference in the hisi_sas user_scan() handling path when processing a user-initiated scan request. A local user can write a crafted scan request via sysfs to trigger a kernel crash and cause a denial of service.
The issue is triggered because the driver supports only one channel, but scanning proceeds to an additional channel value.
How to mitigate CVE-2026-43413
Install security update from vendor's repository.
Sources
- https://git.kernel.org/stable/c/21a13db8d449b9c7eda4471da7f12417602dbbc7
- https://git.kernel.org/stable/c/40119a21d9769bf8fdab5c93c6c878296e628abf
- https://git.kernel.org/stable/c/70c78429ef383e35f9c58848994aeeac8083ae35
- https://git.kernel.org/stable/c/8ddc0c26916574395447ebf4cff684314f6873a9
- https://git.kernel.org/stable/c/beadac156610a4f3bb15cb7bb4b07b6ac06f6567