CVE-2026-98575nfc: pn533: fix OOB read in pn533_acr122_is_rx_frame_valid()
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 19, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc builds before 8db3b1e012a8b25078dfa1efabe3d0cd2916dcba; 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc builds before 74b3fbc60907ee97e3af3249091f57351b53a6d6; 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc builds before 8a0f1bb790d964893db7fc59febda9a534db07b3; from 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc before ea82b7576793219fa10a8b545f8338998b2a9ce2; 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc builds before 72b8b2126e854d6756a1aa4bdc66d7457b832294; from 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc before e72cbedc4596e808d22dd2b9fff666ece76f8dd6; 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc builds before 2450a388367231fb7dd798538f393af227c00c4d; from 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc before b61732f47316d45f27706db7812950145d3327b5 | CNA record |
References
- https://git.kernel.org/stable/c/8db3b1e012a8b25078dfa1efabe3d0cd2916dcba
- https://git.kernel.org/stable/c/74b3fbc60907ee97e3af3249091f57351b53a6d6
- https://git.kernel.org/stable/c/8a0f1bb790d964893db7fc59febda9a534db07b3
- https://git.kernel.org/stable/c/ea82b7576793219fa10a8b545f8338998b2a9ce2
- https://git.kernel.org/stable/c/72b8b2126e854d6756a1aa4bdc66d7457b832294
- https://git.kernel.org/stable/c/e72cbedc4596e808d22dd2b9fff666ece76f8dd6
- https://git.kernel.org/stable/c/2450a388367231fb7dd798538f393af227c00c4d
- https://git.kernel.org/stable/c/b61732f47316d45f27706db7812950145d3327b5
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.