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nfc: pn533: fix OOB read in pn533_acr122_is_rx_frame_valid()

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-98575

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-98575

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "8db3b1e012a8b25078dfa1efabe3d0cd2916dcba",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "74b3fbc60907ee97e3af3249091f57351b53a6d6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "8a0f1bb790d964893db7fc59febda9a534db07b3",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "ea82b7576793219fa10a8b545f8338998b2a9ce2",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "72b8b2126e854d6756a1aa4bdc66d7457b832294",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "e72cbedc4596e808d22dd2b9fff666ece76f8dd6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "2450a388367231fb7dd798538f393af227c00c4d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "b61732f47316d45f27706db7812950145d3327b5",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/nfc/pn533/usb.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "4.7"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "4.7",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.271",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.222",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.189",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.158",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.112",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.55",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.9",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/nfc/pn533/usb.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-98575

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#38594 · Revision 1
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Publisher date
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