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Linux KernelOperating system · Linux

CVE-2025-38631

MEDIUM · 5.5 CVSS v3.1 Published 2025-08-22
Fix available
A fix is available. Upgrade to 6.12.42 / 6.15.10 or later.
See remediation →
57/100
Remediation priority · Elevated
Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In the Linux kernel, the following vulnerability has been resolved: clk: imx95-blk-ctl: Fix synchronous abort When enabling runtime PM for clock suppliers that also belong to a power domain, the following crash is thrown: error: synchronous external abort: 0000000096000010 [#1] PREEMPT SMP Workqueue: events_unbound deferred_probe_work_func pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : clk_mux_get_parent+0x60/0x90 lr : clk_core_reparent_orphans_nolock+0x58/0xd8 Call trace: clk_mux_get_parent+0x60/0x90 clk_core_reparent_orphans_nolock+0x58/0xd8 of_clk_add_hw_provider.part.0+0x90/0x100 of_clk_add_hw_provider+0x1c/0x38 imx95_bc_probe+0x2e0/0x3f0 platform_probe+0x70/0xd8 Enabling runtime PM without explicitly resuming the device caused the power domain cut off after clk_register() is called. As a result, a crash happens when the clock hardware provider is added and attempts to access the BLK_CTL register. Fix this by using devm_pm_runtime_enable() instead of pm_runtime_enable() and getting rid of the pm_runtime_disable() in the cleanup path.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Linux KernelOperating system
Affected:>= 6.10, < 6.12.42>= 6.13, < 6.15.10>= 6.16, < 6.16.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 6.12.42 / 6.15.10 / 6.16.1 or later
Fixed in 6.12.426.15.106.16.1
Vendor patch git.kernel.org →
Recommended fix High confidence

6.12.42 (for 6.12.x), 6.15.10 (for 6.13.x-6.14.x), or 6.16.1 (for 6.16.x)

  1. Identify the current running kernel version using 'uname -r' or check /proc/version
  2. Upgrade the Linux kernel to version 6.12.42 or later if currently on 6.12.x branch
  3. Alternatively, upgrade to version 6.15.10 or later if currently on 6.13.x or 6.14.x branch
  4. Alternatively, upgrade to version 6.16.1 or later if currently on 6.16.x branch
  5. Reboot the system after kernel upgrade to apply the changes
  6. For embedded/imx95-based systems: Ensure the imx95-blk-ctl driver is loaded after the upgrade; the fix changes pm_runtime_enable() to devm_pm_runtime_enable() in the imx95_bc_probe function
Caveat Kernel upgrades may introduce regressions in other drivers; ensure compatibility with userspace tools and custom modules before production deployment

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-38631 in production — separate from our analysis above.

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