Bug 2482080 (CVE-2026-46091)

Summary: CVE-2026-46091 kernel: media: rc: igorplugusb: heed coherency rules
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in the `igorplugusb` component of the Linux kernel. The USB request structure, when handled by Direct Memory Access (DMA) on certain host controllers, did not properly follow DMA coherency rules. This oversight could lead to data integrity issues or unexpected system behavior, as the data might not be consistent across different memory views.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-05-27 15:10:21 UTC
In the Linux kernel, the following vulnerability has been resolved:

media: rc: igorplugusb: heed coherency rules

In a control request, the USB request structure
can be subject to DMA on some HCs. Hence it must obey
the rules for DMA coherency. Allocate it separately.