FKIE_CVE-2026-90222

Vulnerability from fkie_nvd - Published: 2026-09-17 17:17 - Updated: 2026-09-17 17:17
Severity
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/19f1239758c23f087f4c25733cfcf62bf0b06051
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3e7a093c177f9f8b9fd039cab41191515079425a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/47792358a624ea066455ef86b744159928cd7716
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/753bdaf3220fe8371a6c3c75da645ea7753d11be
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7a8e0a7aef80721da287ac246349aba7d98f6aed
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7ee72c64b4b66b1b42dbddbca0a80a218f1b9297
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8710faddef4ad8b2a6bfa985d896e2e1bfb77018
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d329f61ad5786900334a54c2445dc99feda545bf
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nfc/pn533/pn533.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8710faddef4ad8b2a6bfa985d896e2e1bfb77018",
              "status": "affected",
              "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
              "versionType": "git"
            },
            {
              "lessThan": "19f1239758c23f087f4c25733cfcf62bf0b06051",
              "status": "affected",
              "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
              "versionType": "git"
            },
            {
              "lessThan": "7ee72c64b4b66b1b42dbddbca0a80a218f1b9297",
              "status": "affected",
              "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
              "versionType": "git"
            },
            {
              "lessThan": "753bdaf3220fe8371a6c3c75da645ea7753d11be",
              "status": "affected",
              "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
              "versionType": "git"
            },
            {
              "lessThan": "d329f61ad5786900334a54c2445dc99feda545bf",
              "status": "affected",
              "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
              "versionType": "git"
            },
            {
              "lessThan": "7a8e0a7aef80721da287ac246349aba7d98f6aed",
              "status": "affected",
              "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
              "versionType": "git"
            },
            {
              "lessThan": "3e7a093c177f9f8b9fd039cab41191515079425a",
              "status": "affected",
              "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
              "versionType": "git"
            },
            {
              "lessThan": "47792358a624ea066455ef86b744159928cd7716",
              "status": "affected",
              "version": "9815c7cf22daceabfb919ddcd6f2c80e049c1fbc",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/nfc/pn533/pn533.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.7"
            },
            {
              "lessThan": "4.7",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: pn533: hold a reference to the request skb during send_frame\n\n__pn533_send_async() publishes the command and then calls\ndev-\u003ephy_ops-\u003esend_frame(). Once dev-\u003ecmd is set, an incoming frame\ncan be matched to this command: the I2C threaded IRQ runs\npn533_recv_frame(), which queues cmd_complete_work, and\npn533_send_async_complete() frees cmd-\u003ereq with consume_skb().\n\nOn the I2C transport, pn533_i2c_send_frame() still dereferences the same\nskb after i2c_master_send() returns, so a completion that races the\nsend can free the skb while the transport is still using it.\n\nThe request skb is owned by the command object and may be freed by\ncommand completion at any time after dev-\u003ecmd is published, so the\ntransport send path must not assume it stays alive. Hold a temporary\nreference to the request skb across the send_frame() call so the\ntransport always sees a live skb even if completion races the send.\nAdd a pn533_send_cmd_frame() helper and use it from all three send\npaths."
    }
  ],
  "id": "CVE-2026-90222",
  "lastModified": "2026-09-17T17:17:17.687",
  "metrics": {},
  "published": "2026-09-17T17:17:17.687",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/19f1239758c23f087f4c25733cfcf62bf0b06051"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3e7a093c177f9f8b9fd039cab41191515079425a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/47792358a624ea066455ef86b744159928cd7716"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/753bdaf3220fe8371a6c3c75da645ea7753d11be"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7a8e0a7aef80721da287ac246349aba7d98f6aed"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7ee72c64b4b66b1b42dbddbca0a80a218f1b9297"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8710faddef4ad8b2a6bfa985d896e2e1bfb77018"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d329f61ad5786900334a54c2445dc99feda545bf"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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