CVE-2026-98575

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

nfc: pn533: fix OOB read in pn533_acr122_is_rx_frame_valid()

frame->ccid.datalen is read directly from the USB response frame

and used, unchecked, as an index into frame->data[]. A malicious or

malfunctioning device can set this field to an arbitrary value,

causing the driver to read far outside the received buffer.

Bound ccid.datalen against the maximum possible ACR122 frame size

before using it. This replaces the existing datalen == 0 check,

since datalen < 2 already covers that case and additionally

rejects datalen == 1, which would still underflow the

"datalen - 2" offset used below.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References