PRIOn knowledge basePRION:CVE-2023-31084Design/Logic Flaw
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.
| CPE | Name | Operator | Version |
|---|---|---|---|
| debian_linux | eq | 10.0 | |
| debian_linux | eq | 11.0 | |
| debian_linux | eq | 12.0 | |
| fedora | eq | 37 | |
| fedora | eq | 38 | |
| linux_kernel | eq | 6.2 |
References
lists.debian.org/debian-lts-announce/2023/07/msg00030.html
lists.debian.org/debian-lts-announce/2023/10/msg00027.html
lists.fedoraproject.org/archives/list/[email protected]/message/6HIEOLEOURP4BJZMIL7UGGPYRRB44UDN/
lists.fedoraproject.org/archives/list/[email protected]/message/AOATNX5UFL7V7W2QDIQKOHFFHYKWFP4W/
lore.kernel.org/all/CA+UBctCu7fXn4q41O_3=id1+OdyQ85tZY1x+TkT-6OVBL6KAUw@mail.gmail.com/
security.netapp.com/advisory/ntap-20230929-0003/
www.debian.org/security/2023/dsa-5448
www.debian.org/security/2023/dsa-5480
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