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CVE-2022-49259

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: block: don't delete queue kobject before its children kobjects aren't supposed to be deleted before their child kobjects are de…

Published Feb 26, 2025EPSS 0.27%

Overview

CVE-2022-49259 is a medium-severity vulnerability. It was published on February 26, 2025 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:

block: don't delete queue kobject before its children

kobjects aren't supposed to be deleted before their child kobjects are

deleted. Apparently this is usually benign; however, a WARN will be

triggered if one of the child kobjects has a named attribute group:

sysfs group 'modes' not found for kobject 'crypto'

WARNING: CPU: 0 PID: 1 at fs/sysfs/group.c:278 sysfs_remove_group+0x72/0x80

...

Call Trace:

sysfs_remove_groups+0x29/0x40 fs/sysfs/group.c:312

__kobject_del+0x20/0x80 lib/kobject.c:611

kobject_cleanup+0xa4/0x140 lib/kobject.c:696

kobject_release lib/kobject.c:736 [inline]

kref_put include/linux/kref.h:65 [inline]

kobject_put+0x53/0x70 lib/kobject.c:753

blk_crypto_sysfs_unregister+0x10/0x20 block/blk-crypto-sysfs.c:159

blk_unregister_queue+0xb0/0x110 block/blk-sysfs.c:962

del_gendisk+0x117/0x250 block/genhd.c:610

Fix this by moving the kobj

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/0b5924a14d64487ebd51127b0358d06066ef5384Refgit.kernel.org/stable/c/0f69288253e9fc7c495047720e523b9f1aba5712Refgit.kernel.org/stable/c/3d7e32c8da45957326f56937e0471c686d1a7711Refgit.kernel.org/stable/c/84fe3ca6e7910beb47ec13509d484f84fa2a41adRefgit.kernel.org/stable/c/b2001eb10f59363da930cdd6e086a2861986fa18Refgit.kernel.org/stable/c/cf0cb8686e55d9c022944bc6ba9e19e832889e83Refgit.kernel.org/stable/c/efaa0e969261e97c1fdd8e0338e5dd3ba5b9219c

How CyberStrike helps

Frequently asked questions

What is CVE-2022-49259?

CVE-2022-49259 is a medium-severity vulnerability. It was published on February 26, 2025 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2022-49259?

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-2022-49259?

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-2022-49259?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-49259 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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