Bug 2383901 (CVE-2025-38474)

Summary: CVE-2025-38474 kernel: Linux kernel: Local privilege escalation or denial of service in usb: net: sierra driver
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in the Linux kernel's `usb: net: sierra` driver. The driver incorrectly handles USB device endpoints by failing to verify that a required interrupt input endpoint is present. A local attacker with low privileges could exploit this omission, potentially leading to a denial of service (DoS), information disclosure, or arbitrary code execution.
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Description OSIDB Bzimport 2025-07-28 12:01:57 UTC 
In the Linux kernel, the following vulnerability has been resolved:

usb: net: sierra: check for no status endpoint

The driver checks for having three endpoints and
having bulk in and out endpoints, but not that
the third endpoint is interrupt input.
Rectify the omission.
Comment 1 Avinash Hanwate 2025-07-28 15:50:11 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025072812-CVE-2025-38474-0663@gregkh/T