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CVE-2026-98575 affecting package kernel 6.6.157.1-1

Type: advisorySources: OSV

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.

Products
kernel
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2026-98575
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 17:23 UTC · Revision 1

Source evidence

CVE-2026-98575 affecting package kernel 6.6.157.1-1

core-osv · Original source

Published 18 Oct 2026, 16:17 UTC

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.

osv:AZL-108927

kernel

Fixed versions: Not specified

Complete source record
{
  "id": "2fe4467b2a30ed52c26781c1f0fccad5c1a1dd84d4fafc96230f4c49ed7af6e3",
  "url": "https://osv.dev/vulnerability/AZL-108927",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-98575 affecting package kernel 6.6.157.1-1",
    "summary": "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.",
    "evidence": "osv:AZL-108927",
    "products": [
      {
        "name": {
          "value": "kernel",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "AZL-108927",
      "aliases": [
        "AZL-108927"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "6.6.157.1-1"
                }
              ]
            }
          ],
          "package": {
            "name": "kernel",
            "purl": "pkg:rpm/azure-linux/kernel",
            "ecosystem": "Azure Linux:3"
          },
          "database_specific": {
            "source": "https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-108927.json"
          }
        }
      ],
      "modified": "2026-10-27T05:36:16Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-98575"
      ],
      "references": [
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98575"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-98575",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 460414,
  "published_at": "2026-10-18T16:17:09+00:00"
}