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An issue was discovered in drivers/media/dvb-core/dvb_frontend.c in the Linux kernel 6.2. There is a blocking operation when a task is in !TASK_RUNNING. In dvb_frontend_get_event wait_event_interruptible is called; the condition is dvb_frontend_test_event(feprivevents). In dvb_frontend_test_event down(&fepriv->sem) is called. However wait_event_interruptible would put the process to sleep and down(&fepriv->sem) may block the process.

🗓️ 01 Sep 2023 07:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 1 Views

Linux 6.2 DVB has blocking race where wait_event_interruptible may sleep while semaphore down blocks.

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19 Feb 2026 09:04Current
7.3High risk
Vulners AI Score7.3
CVSS 3.15.5
EPSS0.0001
SSVC
1