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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2023-04-24T00:00:00

Updated: 2024-08-02T14:45:25.766Z

Reserved: 2023-04-24T00:00:00

Link: CVE-2023-31084

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-04-24T06:15:07.997

Modified: 2024-11-21T08:01:22.970

Link: CVE-2023-31084

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-04-17T00:00:00Z

Links: CVE-2023-31084 - Bugzilla