CVE-2023-31084

Medium

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.

Package Linux Kernel
Published 2023-04-24
Last modified 2025-03-18
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

5.5

out of 10
Medium
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness type

CWE-833

CVE-2023-31084 is a Deadlock vulnerability

What is Deadlock?

The product contains multiple threads that wait for each other to release locks, causing all threads to halt. Learn more on MITRE CWE

References

The following references provide additional information about CVE-2023-31084 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2023-31084?

    CVE-2023-31084 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Deadlock flaw (CWE-833) . CVE-2023-31084 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2023-31084?

    CVE-2023-31084 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H .

  • Is there a patch available for CVE-2023-31084?

    No patch is currently available for CVE-2023-31084. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2023-31084 actively exploited?

    No — CVE-2023-31084 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

  • What is Deadlock (CWE-833)?

    The product contains multiple threads that wait for each other to release locks, causing all threads to halt. View CWE-833 on MITRE CWE →

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