{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "3f52c2cb7e3ada37513dabb69a22cf917dba754f"
            },
            {
              "fixed": "20a57de2e79b797ed75382659d52bf4c7d9cb446"
            },
            {
              "fixed": "e4ab0fd1c91882f2a7846b1817781c8741f7f315"
            },
            {
              "fixed": "d8c2aa3c4a1ec530a485e46a1c4f1a118bb00156"
            },
            {
              "fixed": "7c31f7a599cf00fad3c204092a91a924126c67e4"
            },
            {
              "fixed": "6d931680a9851481c3243689488eafed08eeff71"
            },
            {
              "fixed": "09822d3d6f68a0cdc4626e0c507324a4927f55a9"
            },
            {
              "fixed": "5c14a19d5b1645cce1cb1252833d70b23635b632"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.209"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.175"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.136"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.83"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.24"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43098.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfc: s3fwrn5: allocate rx skb before consuming bytes\n\ns3fwrn82_uart_read() reports the number of accepted bytes to the serdev\ncore. The current code consumes bytes into recv_skb and may already\ndeliver a complete frame before allocating a fresh receive buffer.\n\nIf that alloc_skb() fails, the callback returns 0 even though it has\nalready consumed bytes, and it leaves recv_skb as NULL for the next\nreceive callback. That breaks the receive_buf() accounting contract and\ncan also lead to a NULL dereference on the next skb_put_u8().\n\nAllocate the receive skb lazily before consuming the next byte instead.\nIf allocation fails, return the number of bytes already accepted.",
  "id": "CVE-2026-43098",
  "modified": "2026-07-08T05:38:27.589941963Z",
  "published": "2026-05-06T07:40:28.845Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/09822d3d6f68a0cdc4626e0c507324a4927f55a9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/20a57de2e79b797ed75382659d52bf4c7d9cb446"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5c14a19d5b1645cce1cb1252833d70b23635b632"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6d931680a9851481c3243689488eafed08eeff71"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7c31f7a599cf00fad3c204092a91a924126c67e4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d8c2aa3c4a1ec530a485e46a1c4f1a118bb00156"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e4ab0fd1c91882f2a7846b1817781c8741f7f315"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43098.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43098"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "nfc: s3fwrn5: allocate rx skb before consuming bytes"
}