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nfc: pn533: hold a reference to the request skb during send_frame

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: nfc: pn533: hold a reference to the request skb during send_frame __pn533_send_async() publishes the command and then calls dev->phy_ops->send_frame(). Once dev->cmd is set, an incoming frame can be matched to this command: the I2C threaded IRQ runs pn533_recv_frame(), which queues cmd_complete_work, and pn533_send_async_complete() frees cmd->req with consume_skb(). On the I2C transport, pn533_i2c_send_frame() still dereferences the same skb after i2c_master_send() returns, so a completion that races the send can free the skb while the transport is still using it. The request skb is owned by the command object and may be freed by command completion at any time after dev->cmd is published, so the transport send path must not assume it stays alive. Hold a temporary reference to the request skb across the send_frame() call so the transport always sees a live skb even if completion races the send. Add a pn533_send_cmd_frame() helper and use it from all three send paths.

Announced Source revision 1
Original source ↗

CVE-2026-90222

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-2026-90222

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": "8710faddef4ad8b2a6bfa985d896e2e1bfb77018",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "19f1239758c23f087f4c25733cfcf62bf0b06051",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "7ee72c64b4b66b1b42dbddbca0a80a218f1b9297",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "753bdaf3220fe8371a6c3c75da645ea7753d11be",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "d329f61ad5786900334a54c2445dc99feda545bf",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "7a8e0a7aef80721da287ac246349aba7d98f6aed",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "3e7a093c177f9f8b9fd039cab41191515079425a",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
        "lessThan": "47792358a624ea066455ef86b744159928cd7716",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/nfc/pn533/pn533.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": "5.10.270",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.221",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.188",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.52",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/nfc/pn533/pn533.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-90222

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#36593 · Revision 1
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