Bug 2516298 (CVE-2026-72480)

Summary: CVE-2026-72480 kernel: iio: adc: xilinx-ams: fix out-of-bounds channel lookup in event handling
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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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 Industrial Input/Output (IIO) subsystem, specifically in the Xilinx Analog-to-Digital Converter (ADC) AMS driver. When handling events, the `ams_event_to_channel()` function could attempt to access memory outside of its allocated boundaries if a matching channel is not found. This out-of-bounds access can lead to system instability or a denial of service, making the system unresponsive.
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Description OSIDB Bzimport 2026-08-15 06:05:11 UTC 
In the Linux kernel, the following vulnerability has been resolved:

iio: adc: xilinx-ams: fix out-of-bounds channel lookup in event handling

ams_event_to_channel() may return a pointer past the end of
dev->channels when no matching scan_index is found. This can lead
to invalid memory access in ams_handle_event().

Add a bounds check in ams_event_to_channel() and return NULL when
no channel is found. Also guard the caller to safely handle this
case.
Comment 1 gkamathe 2026-08-19 13:37:13 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026081536-CVE-2026-72480-0c66@gregkh/T