CVE-2024-53063

Summary

CVE-2024-53063 is a vulnerability affecting the Linux kernel's dvbdev component. The issue stems from a static variable used in dvbdev to store dvb minors, which may result in out-of-memory (OOM) access if certain conditions are met. The risk is heightened when CONFIG_DVB_DYNAMIC_MINORS is not set, allowing dvb_register_device() to overlook boundary checks. Similarly, dvb_device_open() assumes previous register functions have enforced necessary checks. This fragile assumption can lead to potential OOM issues and is flagged by static check analysers like Coverity. To mitigate these risks, explicit guards have been added to prevent OOM access.

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