CVE-2022-49259

block: don't delete queue kobject before its children

MEDIUM

5.5

CVSS Score

Published: February 26, 2025 at 01:56 AM UTC

Updated: June 17, 2026 at 05:17 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.16 ≤ v < 4.19.2384.16 ≤ v < 5.10.1104.16 ≤ v < 5.15.334.16 ≤ v < 5.16.194.16 ≤ v < 5.17.24.16 ≤ v < 5.184.16 ≤ v < 5.4.1894.20 ≤ v < 5.4.1895.11 ≤ v < 5.15.335.16 ≤ v < 5.16.195.17 ≤ v < 5.17.25.5 ≤ v < 5.10.1102c2086afc2b8b974fac32cb028e73dc27bfae4424.16

Vendor states this is fixed in 0b5924a14d64487ebd51127b0358d06066ef5384 (fixed)

Vendor states this is fixed in 0f69288253e9fc7c495047720e523b9f1aba5712 (fixed)

Vendor states this is fixed in 3d7e32c8da45957326f56937e0471c686d1a7711 (fixed)

Vendor states this is fixed in 84fe3ca6e7910beb47ec13509d484f84fa2a41ad (fixed)

Vendor states this is fixed in b2001eb10f59363da930cdd6e086a2861986fa18 (fixed)

Vendor states this is fixed in cf0cb8686e55d9c022944bc6ba9e19e832889e83 (fixed)

Vendor states this is fixed in efaa0e969261e97c1fdd8e0338e5dd3ba5b9219c (fixed)

Vendor states this is fixed in 4.16 (unaffected)

Vendor states this is fixed in 4.19.238 (unaffected)

Vendor states this is fixed in 5.10.110 (unaffected)

Vendor states this is fixed in 5.15.33 (unaffected)

Vendor states this is fixed in 5.16.19 (unaffected)