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THREATINT
PUBLISHED

CVE-2025-37802

ksmbd: fix WARNING "do not call blocking ops when !TASK_RUNNING"



Description

In the Linux kernel, the following vulnerability has been resolved: ksmbd: fix WARNING "do not call blocking ops when !TASK_RUNNING" wait_event_timeout() will set the state of the current task to TASK_UNINTERRUPTIBLE, before doing the condition check. This means that ksmbd_durable_scavenger_alive() will try to acquire the mutex while already in a sleeping state. The scheduler warns us by giving the following warning: do not call blocking ops when !TASK_RUNNING; state=2 set at [<0000000061515a6f>] prepare_to_wait_event+0x9f/0x6c0 WARNING: CPU: 2 PID: 4147 at kernel/sched/core.c:10099 __might_sleep+0x12f/0x160 mutex lock is not needed in ksmbd_durable_scavenger_alive().

Reserved 2025-04-16 | Published 2025-05-08 | Updated 2025-05-12 | Assigner Linux

Product status

Default status
unaffected

0626e6641f6b467447c81dd7678a69c66f7746cf before 8f805b3746d2f41702c77cba22f94f8415fadd1a
affected

0626e6641f6b467447c81dd7678a69c66f7746cf before cd161198e091e8a62b9bd631be970ea9a87d2d6a
affected

0626e6641f6b467447c81dd7678a69c66f7746cf before 1df0d4c616138784e033ad337961b6e1a6bcd999
affected

Default status
affected

5.15
affected

Any version before 5.15
unaffected

6.12.26
unaffected

6.14.5
unaffected

6.15-rc3
unaffected

References

git.kernel.org/...c/8f805b3746d2f41702c77cba22f94f8415fadd1a

git.kernel.org/...c/cd161198e091e8a62b9bd631be970ea9a87d2d6a

git.kernel.org/...c/1df0d4c616138784e033ad337961b6e1a6bcd999

cve.org (CVE-2025-37802)

nvd.nist.gov (CVE-2025-37802)

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