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CVE-2023-31084 is a Linux kernel DVB frontend subsystem flaw in drivers/media/dvb-core/dvb_frontend.c. In dvb_frontend_get_event(), wait_event_interruptible() evaluates a condition that invokes dvb_frontend_test_event(). That function acquires fepriv->sem through down(), which can block. Consequently, a potentially blocking semaphore acquisition is performed while evaluating a wait-event condition after the task may have entered a non-running sleep state, creating an invalid blocking-operation condition.
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Linux kernel DVB frontend blocking-operation issue.
Linux kernel DVB frontend blocking-operation vulnerability.
Linux kernel issue involving blocking operations in dvb_frontend_get_event() and wait_event_interruptible().
Linux kernel DVB frontend event-handling blocking-operation issue.
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Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.