Updated: 2025-03-18 21:07:17.614588
Description:
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.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0 | |
| CVSS Version 3.x | MEDIUM | 5.5 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| CentOS 8.4 ELS | kernel | 4.18.0 | 5.5 | MEDIUM | Released | CLSA-2024:1719932549 | 2024-07-02 11:13:53 | |
| CentOS 8.5 ELS | kernel | 4.18.0 | 5.5 | MEDIUM | Released | CLSA-2024:1719933179 | 2024-07-02 14:28:54 | |
| CentOS Stream 8 ELS | kernel | 4.18.0 | 5.5 | MEDIUM | Ignored | 2025-01-28 02:25:54 | ||
| Ubuntu 16.04 ELS | linux-hwe | 4.15.0 | 5.5 | MEDIUM | Released | CLSA-2023:1693903408 | 2023-09-05 05:06:25 | |
| Ubuntu 16.04 ELS | linux | 4.4.0 | 5.5 | MEDIUM | Released | CLSA-2023:1693827322 | 2023-09-04 09:27:40 | |
| Ubuntu 18.04 ELS | linux | 4.15.0 | 5.5 | MEDIUM | Released | CLSA-2023:1693904331 | 2023-09-05 05:06:27 |