Bug 2516696 (CVE-2026-72078)

Summary: CVE-2026-72078 kernel: Input: ims-pcu - validate control endpoint type
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's `ims-pcu` driver. This driver incorrectly assumes that the first endpoint of the control interface is an interrupt IN endpoint without proper validation. A malicious Universal Serial Bus (USB) device could exploit this by providing a different endpoint type. This improper input is then passed to the `usb_fill_int_urb()` function, which could lead to kernel warnings or undefined behavior, potentially causing system instability or a denial of service.
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Description OSIDB Bzimport 2026-08-15 06:26:20 UTC 
In the Linux kernel, the following vulnerability has been resolved:

Input: ims-pcu - validate control endpoint type

The driver currently assumes that the first endpoint of the control
interface is an interrupt IN endpoint without verifying it. A malicious
device could provide a different endpoint type, which would then be
passed to usb_fill_int_urb(), potentially leading to kernel warnings
or undefined behavior.

Verify that the control endpoint is an interrupt IN endpoint.
Comment 1 Keith Grant 2026-08-17 20:06:51 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081520-CVE-2026-72078-a1eb@gregkh/T