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CVE-2026-72480: iio: adc: xilinx-ams: fix out-of-bounds channel lookup in event handling

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-08-17

Description

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.

Affected products

• Linux kernel: 5.17 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/116d1f8805ae2daadbac89d24da4c0da50b9edae
• https://git.kernel.org/stable/c/1d24f14e049fdd769146dda026496ed23b397ed9
• https://git.kernel.org/stable/c/3c374d33f1338dbb5676919c5194caa9c5aa1631
• https://git.kernel.org/stable/c/947eb6f0a274f8b15a0248051a65b069effd5057
• https://git.kernel.org/stable/c/94d158985b6ea011bdc26186f42d662a156da6cb
• https://git.kernel.org/stable/c/9ac3675bf875792dced45efbf47116719a7c097b

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