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CVE-2024-40969

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: f2fs: don't set RO when shutting down f2fs Shutdown does not check the error of thaw_super due to readonly, which causes a dead…

Published Jul 12, 2024CWE-667EPSS 0.22%

Overview

CVE-2024-40969 is a medium-severity vulnerability. It was published on July 12, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

f2fs: don't set RO when shutting down f2fs

Shutdown does not check the error of thaw_super due to readonly, which

causes a deadlock like below.

f2fs_ioc_shutdown(F2FS_GOING_DOWN_FULLSYNC) issue_discard_thread

- bdev_freeze

- freeze_super

- f2fs_stop_checkpoint()

- f2fs_handle_critical_error - sb_start_write

- set RO - waiting

- bdev_thaw

- thaw_super_locked

- return -EINVAL, if sb_rdonly()

- f2fs_stop_discard_thread

-> wait for kthread_stop(discard_thread);

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/1036d3ea7a32cb7cee00885c73a1f2ba7fbc499aRefgit.kernel.org/stable/c/3bdb7f161697e2d5123b89fe1778ef17a44858e7Refgit.kernel.org/stable/c/f47ed3b284b38f235355e281f57dfa8fffcc6563Refgit.kernel.org/stable/c/1036d3ea7a32cb7cee00885c73a1f2ba7fbc499aRefgit.kernel.org/stable/c/3bdb7f161697e2d5123b89fe1778ef17a44858e7Refgit.kernel.org/stable/c/f47ed3b284b38f235355e281f57dfa8fffcc6563

How CyberStrike helps

Frequently asked questions

What is CVE-2024-40969?

CVE-2024-40969 is a medium-severity vulnerability. It was published on July 12, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-40969?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-40969?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-40969?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-40969 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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