Linux Kernel Error Pointer Dereference in IMX JPEG Driver

CVE-2024-57978

Summary

A vulnerability exists in the IMX JPEG driver of the Linux kernel, where the code may dereference an error pointer. Specifically, the check for the pointer involves determining if it is not NULL and not an error pointer before passing it to the pm_runtime_suspended() function. If an error pointer is erroneously passed, it can lead to system instability, manifesting as an Oops. The fix involves using IS_ERR_OR_NULL() to clearly verify both cases, thus preventing the potential dereference issue.

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