ksmbd: fix WARNING "do not call blocking ops when !TASK_RUNNING" (CVE-2025-37802) | HOL Guard CVE

High · CVSS 7.5CVE-2025-37802

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

Answer in brief

CVE-2025-37802 records a High severity (CVSS 7.5) vulnerability in ksmbd: fix WARNING "do not call blocking ops when !TASK_RUNNING". The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published May 8, 2025Updated Sep 14, 2026Source checked Sep 20, 2026First seen by HOL Aug 5, 2026Material review Sep 14, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.5
Exploitation: Not marked as known exploited
Affected software: 6 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Affected products and reported versions
Product	Affected versions	Fixed versions
cpe:2.3:o:linux:linux_kernel::::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:6.15:rc1::::::	Not reported	Not reported
cpe:2.3:o:linux:linux_kernel:6.15:rc2::::::	Not reported	Not reported

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=0626e6641f6b467447c81dd7678a69c66f7746cf <8f805b3746d2f41702c77cba22f94f8415fadd1a \|\| >=0626e6641f6b467447c81dd7678a69c66f7746cf <cd161198e091e8a62b9bd631be970ea9a87d2d6a \|\| >=0626e6641f6b467447c81dd7678a69c66f7746cf <1df0d4c616138784e033ad337961b6e1a6bcd999	8f805b3746d2f41702c77cba22f94f8415fadd1a, cd161198e091e8a62b9bd631be970ea9a87d2d6a, 1df0d4c616138784e033ad337961b6e1a6bcd999
Linux/Linuxgeneric	5.15	Not reported
Linux/Linuxgeneric	>=0626e6641f6b467447c81dd7678a69c66f7746cf <97aabdbf7ba82da20e698f0e62917fb206d42941 \|\| >=0626e6641f6b467447c81dd7678a69c66f7746cf <8f805b3746d2f41702c77cba22f94f8415fadd1a \|\| >=0626e6641f6b467447c81dd7678a69c66f7746cf <cd161198e091e8a62b9bd631be970ea9a87d2d6a \|\| >=0626e6641f6b467447c81dd7678a69c66f7746cf <1df0d4c616138784e033ad337961b6e1a6bcd999	97aabdbf7ba82da20e698f0e62917fb206d42941, 8f805b3746d2f41702c77cba22f94f8415fadd1a, cd161198e091e8a62b9bd631be970ea9a87d2d6a, 1df0d4c616138784e033ad337961b6e1a6bcd999

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 8f805b3746d2f41702c77cba22f94f8415fadd1a; Linux/Linux to 97aabdbf7ba82da20e698f0e62917fb206d42941 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
May 8, 2025
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 5, 2026

Sources and claim methodology

Upstream source 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().

Quoted source text, attributed separately from HOL analysis.