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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().

Timeline

  1. ID reserved

    By Linux

  2. · 22 days later

    Published

  3. · 16 months later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2025-37802, by who scored it
Scored byCVSSScoreVector
LinuxCNA (assigner)3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Modified3.1Medium5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.36% · top 69% of all CVEs (11 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Affected products

  • Linux · Linux

    • affected 0626e6641f6b467447c81dd7678a69c66f7746cf – < 97aabdbf7ba82da20e698f0e62917fb206d42941
    • affected 0626e6641f6b467447c81dd7678a69c66f7746cf – < 8f805b3746d2f41702c77cba22f94f8415fadd1a
    • affected 0626e6641f6b467447c81dd7678a69c66f7746cf – < cd161198e091e8a62b9bd631be970ea9a87d2d6a
    • affected 0626e6641f6b467447c81dd7678a69c66f7746cf – < 1df0d4c616138784e033ad337961b6e1a6bcd999
  • Linux · Linux

    • affected 5.15
    • unaffected < 5.15
    • unaffected 6.6.157 – ≤ 6.6.*
    • unaffected 6.12.26 – ≤ 6.12.*
    • unaffected 6.14.5 – ≤ 6.14.*
    • unaffected 6.15 – ≤ *

References

References4

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .