Out-of-bounds read in Linux kernel - CVE-2026-89947
Published: September 17, 2026
Vulnerability identifier: #VU150341
CSH Severity: Low
CVSS v4: 7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89947
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information, modify data, and cause a denial of service.
The vulnerability exists due to an incorrect parent count in the gxbb_32k_clk_sel clock mux when registering the clock mux. A remote attacker can trigger registration of the affected clock mux to disclose sensitive information, modify data, and cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-89947
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
External References
- https://git.kernel.org/stable/c/1e509a6707d2fd9da79bdfa24742661b34562bfd
- https://git.kernel.org/stable/c/404079d124d75a5da16322acc53d3ffc50b4ec68
- https://git.kernel.org/stable/c/4582949b7badcb91bb537ca522d69b8a35131e72
- https://git.kernel.org/stable/c/628b6fee9fca292f12d07f0f1bcf1edefa949d81
- https://git.kernel.org/stable/c/8b2f7a411e7ceaef268355c2150c22ee3f509c3b
- https://git.kernel.org/stable/c/bf85bd6e550c17ffa585606fcc18eb5b7c95bbce
- https://git.kernel.org/stable/c/c86214e6178c38a0eff39110a4e92b824f5dd403
- https://git.kernel.org/stable/c/f6ff0e6995dbff5cb145d7795c8f0af9c168094a