CVE-2026-98575

nfc: pn533: fix OOB read in pn533_acr122_is_rx_frame_valid()

State: Published
Severity: Not scored
Published: Oct 18, 2026
Updated: Oct 19, 2026
Reserved: Sep 25, 2026

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before 8db3b1e012a8b25078dfa1efabe3d0cd2916dcbaAffected 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before 74b3fbc60907ee97e3af3249091f57351b53a6d6Affected 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before 8a0f1bb790d964893db7fc59febda9a534db07b3Affected 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before ea82b7576793219fa10a8b545f8338998b2a9ce2Affected 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before 72b8b2126e854d6756a1aa4bdc66d7457b832294Affected 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before e72cbedc4596e808d22dd2b9fff666ece76f8dd6Affected 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before 2450a388367231fb7dd798538f393af227c00c4dAffected 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before b61732f47316d45f27706db7812950145d3327b5Affected
LinuxLinux	4.7Affected before 4.7Not affected 5.10.271 through 5.10.Not affected 5.15.222 through 5.15.Not affected 6.1.189 through 6.1.Not affected 6.6.158 through 6.6.Not affected 6.12.112 through 6.12.Not affected 6.18.55 through 6.18.Not affected 7.2.9 through 7.2.*Not affected 7.3 and laterNot affected

Product

Versions

LinuxLinux

9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before 8db3b1e012a8b25078dfa1efabe3d0cd2916dcbaAffected
9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before 74b3fbc60907ee97e3af3249091f57351b53a6d6Affected
9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before 8a0f1bb790d964893db7fc59febda9a534db07b3Affected
9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before ea82b7576793219fa10a8b545f8338998b2a9ce2Affected
9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before 72b8b2126e854d6756a1aa4bdc66d7457b832294Affected
9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before e72cbedc4596e808d22dd2b9fff666ece76f8dd6Affected
9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before 2450a388367231fb7dd798538f393af227c00c4dAffected
9815c7cf22daceabfb919ddcd6f2c80e049c1fbc to before b61732f47316d45f27706db7812950145d3327b5Affected

LinuxLinux

4.7Affected
before 4.7Not affected
5.10.271 through 5.10.*Not affected
5.15.222 through 5.15.*Not affected
6.1.189 through 6.1.*Not affected
6.6.158 through 6.6.*Not affected
6.12.112 through 6.12.*Not affected
6.18.55 through 6.18.*Not affected
7.2.9 through 7.2.*Not affected
7.3 and laterNot affected

References

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