CVE-2026-90222 (GCVE-0-2026-90222)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:07 – Updated: 2026-09-17 16:07
VLAI
Title
nfc: pn533: hold a reference to the request skb during send_frame
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.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc , < 8710faddef4ad8b2a6bfa985d896e2e1bfb77018 (git)
Affected: 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc , < 19f1239758c23f087f4c25733cfcf62bf0b06051 (git)
Affected: 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc , < 7ee72c64b4b66b1b42dbddbca0a80a218f1b9297 (git)
Affected: 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc , < 753bdaf3220fe8371a6c3c75da645ea7753d11be (git)
Affected: 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc , < d329f61ad5786900334a54c2445dc99feda545bf (git)
Affected: 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc , < 7a8e0a7aef80721da287ac246349aba7d98f6aed (git)
Affected: 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc , < 3e7a093c177f9f8b9fd039cab41191515079425a (git)
Affected: 9815c7cf22daceabfb919ddcd6f2c80e049c1fbc , < 47792358a624ea066455ef86b744159928cd7716 (git)
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Linux Linux Affected: 4.7
Unaffected: 0 , < 4.7 (semver)
Unaffected: 5.10.270 , ≤ 5.10.* (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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{
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              "versionType": "original_commit_for_fix"
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                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "4.7",
                  "vulnerable": true
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              "negate": false,
              "operator": "OR"
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      ],
      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:07:32.717Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8710faddef4ad8b2a6bfa985d896e2e1bfb77018"
        },
        {
          "url": "https://git.kernel.org/stable/c/19f1239758c23f087f4c25733cfcf62bf0b06051"
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        },
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          "url": "https://git.kernel.org/stable/c/47792358a624ea066455ef86b744159928cd7716"
        }
      ],
      "title": "nfc: pn533: hold a reference to the request skb during send_frame",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90222",
    "datePublished": "2026-09-17T16:07:32.717Z",
    "dateReserved": "2026-09-11T19:38:34.794Z",
    "dateUpdated": "2026-09-17T16:07:32.717Z",
    "state": "PUBLISHED"
  },
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      "date": "2026-09-25",
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      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "nfc: pn533: hold a reference to the request skb during send_frame",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-90222.json",
      "version": "2"
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        "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"
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            "url": "https://git.kernel.org/stable/c/7a8e0a7aef80721da287ac246349aba7d98f6aed"
          },
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/7ee72c64b4b66b1b42dbddbca0a80a218f1b9297"
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/d329f61ad5786900334a54c2445dc99feda545bf"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-21T16:30:21Z",
      "cve": "CVE-2026-90222",
      "id": "CVE-2026-90222",
      "initial_release_date": "2026-09-18T00:19:42Z",
      "product_status:known_affected": "263",
      "product_status:known_not_affected": "84",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-90222",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-90222.json",
      "version": "4"
    }
  }
}



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