CVE-2023-31084

MEDIUM

Linux Kernel 6.2 - Deadlock in DVB Frontend Event Handling

Title source: llm
STIX 2.1

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.

References (9)

Core 9
Core References
Third Party Advisory vendor-advisory
https://www.debian.org/security/2023/dsa-5448
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html
Third Party Advisory vendor-advisory
https://www.debian.org/security/2023/dsa-5480
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html

Scores

CVSS v3 5.5
EPSS 0.0001
EPSS Percentile 1.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-833
Status published
Products (7)
debian/debian_linux 10.0
debian/debian_linux 11.0
debian/debian_linux 12.0
fedoraproject/fedora 37
fedoraproject/fedora 38
linux/linux_kernel 6.2
netapp/h410c_firmware
Published Apr 24, 2023
Tracked Since Feb 18, 2026