Fixed
Created: Apr 24, 2023
Updated: Jul 28, 2023
Resolved Date: Jul 28, 2023
Found In Version: 10.21.20.1
Fix Version: 10.21.20.19
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Kernel
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(fepriv,events). 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.
CREATE(Triage):(User=admin) CVE-2023-31084 (https://nvd.nist.gov/vuln/detail/CVE-2023-31084)
