CVE-2022-49751

w1: fix WARNING after calling w1_process()

Medium · published March 27, 2025

CVSS v3.1
5.5
EPSS
0%
Percentile
8.7
In the wild
Unconfirmed
What it is

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

w1: fix WARNING after calling w1_process()

I got the following WARNING message while removing driver(ds2482):

------------[ cut here ]------------

do not call blocking ops when !TASK_RUNNING; state=1 set at [<000000002d50bfb6>] w1_process+0x9e/0x1d0 [wire]

WARNING: CPU: 0 PID: 262 at kernel/sched/core.c:9817 __might_sleep+0x98/0xa0

CPU: 0 PID: 262 Comm: w1_bus_master1 Tainted: G N 6.1.0-rc3+ #307

RIP: 0010:__might_sleep+0x98/0xa0

Call Trace:

exit_signals+0x6c/0x550

do_exit+0x2b4/0x17e0

kthread_exit+0x52/0x60

kthread+0x16d/0x1e0

ret_from_fork+0x1f/0x30

The state of task is set to TASK_INTERRUPTIBLE in loop in w1_process(),

set it to TASK_RUNNING when it breaks out of the loop to avoid the

warning.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00195 · 8.7th percentile
Published
2025-03-27T16:42Z
EPSS history
Timeline
  • 27 MAR 16:42Z
    w1: fix WARNING after calling w1_process()
    cvelistv5