CVE-2026-43175: clk: rs9: Reserve 8 struct clk_hw slots for for 9FGV0841
In the Linux kernel, the following vulnerability has been resolved:
clk: rs9: Reserve 8 struct clkhw slots for for 9FGV0841
The 9FGV0841 has 8 outputs and registers 8 struct clkhw, make sure there are 8 slots for those newly registered clkhw pointers, else there is going to be out of bounds write when pointers 4..7 are set into struct rs9driverdata .clkdif[4..7] field.
Since there are other structure members past this struct clkhw pointer array, writing to .clkdif[4..7] fields corrupts both the struct rs9driverdata content and data around it, sometimes without crashing the kernel. However, the kernel does surely crash when the driver is unbound or during suspend.
Fix this, increase the struct clkhw pointer array size to the maximum output count of 9FGV0841, which is the biggest chip that is supported by this driver.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-43175?
The severity of CVE-2026-43175 is classified as low, as it primarily involves a structural reservation issue in the Linux kernel.
How do I fix CVE-2026-43175?
To fix CVE-2026-43175, update to the latest stable version of the Linux kernel that includes the patched clk rs9 driver.
What impacts does CVE-2026-43175 have on systems?
CVE-2026-43175 can lead to improper resource allocation in systems using the clk rs9 driver, affecting device functionality.
Which versions of the Linux kernel are affected by CVE-2026-43175?
CVE-2026-43175 affects versions of the Linux kernel that include the clk rs9 driver prior to the resolution in the latest release.
Is CVE-2026-43175 an exploit that can be used for remote attacks?
CVE-2026-43175 does not present a remote exploit vector, as it is a local configuration issue related to hardware resource management.