CVE-2025-38602: iwlwifi: Add missing check for alloc_ordered_workqueue
In the Linux kernel, the following vulnerability has been resolved:
iwlwifi: Add missing check for alloc_ordered_workqueue
Add check for the return value of alloc_ordered_workqueue since it may
return NULL pointer.
Security readout for executives and security teams
Plain-English summary
This is a Linux kernel iwlwifi driver bug where a failed workqueue allocation was not checked. On affected systems using Intel Wi-Fi support, an uncommon allocation failure could cause unreliable behavior or a crash. The sources do not provide a CVSS score, CWE, or evidence of active exploitation.
Executive priority
Treat this as routine kernel maintenance unless your fleet heavily depends on Linux endpoints with Intel Wi-Fi. There is no source-backed active exploitation signal, but kernel driver crashes can still affect availability and support costs.
Technical view
The fix adds a missing NULL check after alloc_ordered_workqueue in the iwlwifi driver. Without the check, later code could dereference a NULL pointer if allocation fails. Public records list Linux kernel impact and stable kernel commits, but do not describe exploitability, required privileges, or attacker control.
Likely exposure
Exposure is likely limited to Linux systems running affected kernels with the iwlwifi Intel wireless driver present or enabled. Servers without Intel Wi-Fi hardware are less likely to be exposed, but kernel package inventories should be checked against distro advisories.
Exploitation context
The bundle marks KEV as false and provides no cited evidence of exploitation in the wild. The available description suggests a reliability or denial-of-service class issue tied to allocation failure, but exploit preconditions are not documented.
Researcher notes
Evidence is sparse: no CVSS, CWE, detailed impact statement, or exploit prerequisites are provided. The key technical fact is the missing NULL check for alloc_ordered_workqueue in iwlwifi, resolved through multiple Linux stable commits.
Mitigation direction
Update affected Linux kernels using vendor or distro security packages.
Track the referenced Linux stable commits for kernel builds maintained internally.
Review Debian LTS advisories if using affected Debian LTS kernels.
Prioritize laptops, workstations, and edge devices with Intel Wi-Fi hardware.
Check vendor guidance before applying nonstandard driver workarounds.
Validation and detection
Inventory Linux kernel versions across endpoints and servers.
Identify systems loading or packaging the iwlwifi driver.
Map installed distro kernel packages to vendor security advisories.
Confirm updated kernels include the referenced stable fixes.
Document systems without Intel Wi-Fi as lower-likelihood exposure.
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Potential ATT&CK relevance
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CVE-2025-38602 mapping review
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These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
0CVSS vectors
3Timeline events
1ADP providers
12Source links
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
CVE publishedCVE Program
The CVE record was published.
Aug 19, 2025, 17:03 UTC (UTC+00:00)
CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.