Improper Initialization in Linux kernel - CVE-2026-80523
Published: August 27, 2026
Vulnerability identifier: #VU145972
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2026-80523
CWE-ID: CWE-665
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper initialization in the hdma clock configuration in drivers/clk/spacemit/ccu-k3.c when accessing the internal TCM path of the X100 RISC-V core. A remote attacker can trigger a page fault through vector instruction access to cause a denial of service.
The issue can cause the Linux system to hang.
Affected software
Linux kernel
How to mitigate CVE-2026-80523
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3