CVE-2022-49685

iio: trigger: sysfs: fix use-after-free on remove

State: Published
Severity: 7.8 High
Published: Feb 26, 2025
Updated: May 11, 2026
Reserved: Feb 26, 2025

Description

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

iio: trigger: sysfs: fix use-after-free on remove

Ensure that the irq_work has completed before the trigger is freed.

================================================================== BUG: KASAN: use-after-free in irq_work_run_list Read of size 8 at addr 0000000064702248 by task python3/25

Call Trace: irq_work_run_list irq_work_tick update_process_times tick_sched_handle tick_sched_timer __hrtimer_run_queues hrtimer_interrupt

Allocated by task 25: kmem_cache_alloc_trace iio_sysfs_trig_add dev_attr_store sysfs_kf_write kernfs_fop_write_iter new_sync_write vfs_write ksys_write sys_write

Freed by task 25: kfree iio_sysfs_trig_remove dev_attr_store sysfs_kf_write kernfs_fop_write_iter new_sync_write vfs_write ksys_write sys_write

==================================================================

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
LinuxLinux	f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before d6111e7bdb8ec27eb43d01c4cd4ff1620a75f7f2Affected f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before fd5d8fb298a2866c337da635c79d63c3afabcaf7Affected f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before 31ff3309b47d98313c61b8301bf595820cc3cc33Affected f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before 5e39397d60dacc7f5d81d442c1c958eaaaf31128Affected f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before b07a30a774b3c3e584a68dc91779c68ea2da4813Affected f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before 4687c3f955240ca2a576bdc3f742d4d915b6272dAffected f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before 4ef1e521be610b720daeb7cf899fedc7db0274c4Affected f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before 78601726d4a59a291acc5a52da1d3a0a6831e4e8Affected
LinuxLinux	3.7Affected before 3.7Not affected 4.9.321 through 4.9.Not affected 4.14.286 through 4.14.Not affected 4.19.250 through 4.19.Not affected 5.4.202 through 5.4.Not affected 5.10.127 through 5.10.Not affected 5.15.51 through 5.15.Not affected 5.18.8 through 5.18.*Not affected 5.19 and laterNot affected

Product

Versions

LinuxLinux

f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before d6111e7bdb8ec27eb43d01c4cd4ff1620a75f7f2Affected
f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before fd5d8fb298a2866c337da635c79d63c3afabcaf7Affected
f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before 31ff3309b47d98313c61b8301bf595820cc3cc33Affected
f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before 5e39397d60dacc7f5d81d442c1c958eaaaf31128Affected
f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before b07a30a774b3c3e584a68dc91779c68ea2da4813Affected
f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before 4687c3f955240ca2a576bdc3f742d4d915b6272dAffected
f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before 4ef1e521be610b720daeb7cf899fedc7db0274c4Affected
f38bc926d022ebd67baad6ac7fc22c95fbc6238c to before 78601726d4a59a291acc5a52da1d3a0a6831e4e8Affected

LinuxLinux

3.7Affected
before 3.7Not affected
4.9.321 through 4.9.*Not affected
4.14.286 through 4.14.*Not affected
4.19.250 through 4.19.*Not affected
5.4.202 through 5.4.*Not affected
5.10.127 through 5.10.*Not affected
5.15.51 through 5.15.*Not affected
5.18.8 through 5.18.*Not affected
5.19 and laterNot affected

References

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