CVE-2022-49259

block: don't delete queue kobject before its children

State: Published
Severity: Not scored
Published: Feb 26, 2025
Updated: May 11, 2026
Reserved: Feb 26, 2025

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 kobject_del() and the corresponding kobject_uevent() to the correct place.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	2c2086afc2b8b974fac32cb028e73dc27bfae442 to before b2001eb10f59363da930cdd6e086a2861986fa18Affected 2c2086afc2b8b974fac32cb028e73dc27bfae442 to before 84fe3ca6e7910beb47ec13509d484f84fa2a41adAffected 2c2086afc2b8b974fac32cb028e73dc27bfae442 to before 0b5924a14d64487ebd51127b0358d06066ef5384Affected 2c2086afc2b8b974fac32cb028e73dc27bfae442 to before efaa0e969261e97c1fdd8e0338e5dd3ba5b9219cAffected 2c2086afc2b8b974fac32cb028e73dc27bfae442 to before cf0cb8686e55d9c022944bc6ba9e19e832889e83Affected 2c2086afc2b8b974fac32cb028e73dc27bfae442 to before 3d7e32c8da45957326f56937e0471c686d1a7711Affected 2c2086afc2b8b974fac32cb028e73dc27bfae442 to before 0f69288253e9fc7c495047720e523b9f1aba5712Affected
LinuxLinux	4.16Affected before 4.16Not affected 4.19.238 through 4.19.Not affected 5.4.189 through 5.4.Not affected 5.10.110 through 5.10.Not affected 5.15.33 through 5.15.Not affected 5.16.19 through 5.16.Not affected 5.17.2 through 5.17.Not affected 5.18 and laterNot affected

Product

Versions

LinuxLinux

2c2086afc2b8b974fac32cb028e73dc27bfae442 to before b2001eb10f59363da930cdd6e086a2861986fa18Affected
2c2086afc2b8b974fac32cb028e73dc27bfae442 to before 84fe3ca6e7910beb47ec13509d484f84fa2a41adAffected
2c2086afc2b8b974fac32cb028e73dc27bfae442 to before 0b5924a14d64487ebd51127b0358d06066ef5384Affected
2c2086afc2b8b974fac32cb028e73dc27bfae442 to before efaa0e969261e97c1fdd8e0338e5dd3ba5b9219cAffected
2c2086afc2b8b974fac32cb028e73dc27bfae442 to before cf0cb8686e55d9c022944bc6ba9e19e832889e83Affected
2c2086afc2b8b974fac32cb028e73dc27bfae442 to before 3d7e32c8da45957326f56937e0471c686d1a7711Affected
2c2086afc2b8b974fac32cb028e73dc27bfae442 to before 0f69288253e9fc7c495047720e523b9f1aba5712Affected

LinuxLinux

4.16Affected
before 4.16Not affected
4.19.238 through 4.19.*Not affected
5.4.189 through 5.4.*Not affected
5.10.110 through 5.10.*Not affected
5.15.33 through 5.15.*Not affected
5.16.19 through 5.16.*Not affected
5.17.2 through 5.17.*Not affected
5.18 and laterNot affected

References

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