Linux Kernel Tegra PMC: Uninitialized Clock Rate on 32bit Tegra
CVE-2026-99259 Published on November 3, 2026
soc/tegra: pmc: Fix uninitialised clock rate
In the Linux kernel, the following vulnerability has been resolved:
soc/tegra: pmc: Fix uninitialised clock rate
For legacy 32-bit Tegra devices, the warning in the
tegra_pmc_enter_suspend_mode() function is being triggered because the
early_pmc->rate variable is never configured and hence, always 0. This
issue started occurring after updating the PMC driver to create the PMC
context dynamically which causes the 'rate' to be set in the new dynamic
context, but missed updating the rate in the early PMC context.
Fix this by initialising the early_pmc->rate variable for 32-bit Tegra
devices when the rate for the PMC context is initialised.
[treding@nvidia.com: move assignment to existing #ifdef block]
Products Associated with CVE-2026-99259
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Affected Versions
Linux:- Version 4d61f03426892b14d498e160be245edcb9dd8359 and below 43bc7d5707bbbf75e56db849b987193d6e866ec6 is affected.
- Version 4d61f03426892b14d498e160be245edcb9dd8359 and below c5c95dbdc9011a56359df4dc00be829bbcc0b036 is affected.
- Version 7.2 is affected.
- Before 7.2 is unaffected.
- Version 7.2.13, <= 7.2.* is unaffected.
- Version 7.3, <= * is unaffected.