CVE-2026-98575

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.

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EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.12%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://git.kernel.org/stable/c/2450a388367231fb7dd798538f393af227c00c4d https://git.kernel.org/stable/c/72b8b2126e854d6756a1aa4bdc66d7457b832294 https://git.kernel.org/stable/c/74b3fbc60907ee97e3af3249091f57351b53a6d6 https://git.kernel.org/stable/c/8a0f1bb790d964893db7fc59febda9a534db07b3 https://git.kernel.org/stable/c/8db3b1e012a8b25078dfa1efabe3d0cd2916dcba https://git.kernel.org/stable/c/b61732f47316d45f27706db7812950145d3327b5 https://git.kernel.org/stable/c/e72cbedc4596e808d22dd2b9fff666ece76f8dd6 https://git.kernel.org/stable/c/ea82b7576793219fa10a8b545f8338998b2a9ce2

Frequently Asked Questions

What is CVE-2026-98575? +

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.

How do I check if I'm vulnerable to CVE-2026-98575? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.