CVE-2025-38045: 
Linux Kernel vulnerability analysis and mitigation

CVE-2025-38045 is a denial-of-service vulnerability in the Linux kernel's iwlwifi Wi-Fi driver caused by an incorrect ordering of debug actions. The flaw was introduced when the firmware debug dump process was restructured — specifically, the firmware (FW) reset was moved to occur mid-dump rather than at the point of a firmware-triggered error, causing certain configuration-application actions to crash the device. It affects Linux kernel versions before 6.6.93, 6.7 through 6.12.30, and 6.13 through 6.14.8. Disclosed on June 18, 2025, it carries a CVSS v3.1 base score of 5.5 (Medium) (Feedly, EUVD).

The root cause is an improper sequencing of operations (CWE-691: Insufficient Control Flow Management) within the iwlwifi driver's debug subsystem. When the debug dump logic was refactored to split the dump and perform the firmware reset mid-process, the order in which debug configuration actions were applied was not updated accordingly, leaving some actions executing after the firmware reset in a state that causes the device to crash. Exploitation requires local access with low privileges — an attacker or unprivileged local user capable of triggering the debug configuration path could induce a device crash. No public proof-of-concept exploit code has been identified (Feedly).

Successful exploitation results in a denial-of-service condition affecting the Wi-Fi device and potentially broader system stability, as the kernel driver crash can render the wireless interface non-functional. The impact is limited to availability (CVSS availability impact: High), with no confidentiality or integrity consequences. The scope is confined to the affected system and does not enable lateral movement or data exfiltration (Feedly, EUVD).

There is no known public proof-of-concept exploit and no evidence of in-the-wild exploitation as of the time of disclosure. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. The EPSS score is approximately 0.018% (0.000180), indicating a very low probability of exploitation in the near term (Feedly). Exploitation requires local access with low privileges, further limiting the practical attack surface.

Patches are available in Linux kernel versions 6.6.93, 6.12.31, 6.14.9, and 6.15. Users should update to one of these patched versions as the primary remediation. SUSE and Ubuntu have issued distribution-specific kernel updates addressing this CVE (SUSE Advisory, Ubuntu USN-7769-1). As a temporary measure, restricting local user access to minimize the ability to trigger the debug configuration path can reduce exposure until patching is feasible.

Distribution vendors including SUSE and Ubuntu have issued kernel security advisories incorporating the fix for CVE-2025-38045 (SUSE Advisory, Ubuntu USN-7769-1, Ubuntu USN-7770-1). No notable independent researcher commentary or significant social media discussion has been identified for this vulnerability.