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.
How to fix
- Linux Linux8db3b1e012a8b25078dfa1efabe3d0cd2916dcba, 74b3fbc60907ee97e3af3249091f57351b53a6d6, 8a0f1bb790d964893db7fc59febda9a534db07b3, ea82b7576793219fa10a8b545f8338998b2a9ce2, 72b8b2126e854d6756a1aa4bdc66d7457b832294, e72cbedc4596e808d22dd2b9fff666ece76f8dd6, 2450a388367231fb7dd798538f393af227c00c4d, b61732f47316d45f27706db7812950145d3327b5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc ≤ v < 8db3b1e012a8b25078dfa1efabe3d0cd2916dcba, 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc ≤ v < 74b3fbc60907ee97e3af3249091f57351b53a6d6, 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc ≤ v < 8a0f1bb790d964893db7fc59febda9a534db07b3, 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc ≤ v < ea82b7576793219fa10a8b545f8338998b2a9ce2, 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc ≤ v < 72b8b2126e854d6756a1aa4bdc66d7457b832294, 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc ≤ v < e72cbedc4596e808d22dd2b9fff666ece76f8dd6, 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc ≤ v < 2450a388367231fb7dd798538f393af227c00c4d, 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc ≤ v < b61732f47316d45f27706db7812950145d3327b5, 4.7 | 8db3b1e012a8b25078dfa1efabe3d0cd2916dcba, 74b3fbc60907ee97e3af3249091f57351b53a6d6, 8a0f1bb790d964893db7fc59febda9a534db07b3, ea82b7576793219fa10a8b545f8338998b2a9ce2, 72b8b2126e854d6756a1aa4bdc66d7457b832294, e72cbedc4596e808d22dd2b9fff666ece76f8dd6, 2450a388367231fb7dd798538f393af227c00c4d, b61732f47316d45f27706db7812950145d3327b5 |
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