net/tls: Fail tls_sw_splice_read() after a failed async decrypt

{
  "id": "6a35defa9efe3fb714d89ec4019a66ab4202b102067c6cc808360a71b415c1c3",
  "url": "https://osv.dev/vulnerability/CVE-2026-80904",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net/tls: Fail tls_sw_splice_read() after a failed async decrypt",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net/tls: Fail tls_sw_splice_read() after a failed async decrypt When an async decrypt fails, tls_decrypt_done() records the error in ctx->async_wait.err and calls tls_err_abort(), which stores it in sk_err. tls_sw_recvmsg() and tls_sw_read_sock() each read async_wait.err once they hold the reader lock and fail the call: a record that did not authenticate breaks the connection. tls_sw_splice_read() has no such check, and sk_err does not stand in for one. tls_rx_rec_wait() tests sk_err only inside the loop it skips whenever a record is already parsed, and the first reader to reach sock_error() clears it, while async_wait.err persists. A splice therefore keeps delivering records on a connection that recvmsg() and read_sock() refuse to read. Read async_wait.err in tls_sw_splice_read() as the other two readers do.",
    "evidence": "osv:CVE-2026-80904",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
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            "value": "6.1.184",
            "evidence": "/affected/1/ranges"
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          {
            "value": "6.6.153",
            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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            "value": "7.1.10",
            "evidence": "/affected/1/ranges"
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    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-80904",
      "aliases": [
        "CVE-2026-80904"
      ],
      "affected": [
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                  "fixed": "18ae1e95f20867106a28820c208a9cec99dda861"
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                  "fixed": "82d9269f01ebfd835b6256aa17016a974cbbc647"
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                  "fixed": "4b177911eb9f799e9841c2f87c75b08cb112757a"
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                  "fixed": "976df67f463db1fddaf2a32fb04f57ad2891a23d"
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
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      ],
      "modified": "2026-10-28T02:30:37.773868275Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/06c2a53604fa1dc4820063828d7dadb3675b7af8",
        "https://git.kernel.org/stable/c/18ae1e95f20867106a28820c208a9cec99dda861",
        "https://git.kernel.org/stable/c/4b177911eb9f799e9841c2f87c75b08cb112757a",
        "https://git.kernel.org/stable/c/82d9269f01ebfd835b6256aa17016a974cbbc647",
        "https://git.kernel.org/stable/c/976df67f463db1fddaf2a32fb04f57ad2891a23d",
        "https://git.kernel.org/stable/c/a808aadff634c7a408b2ab84d5919e9a741fdb5b",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80904.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-80904",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80904.json"
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    "related_cves": [
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        "value": "CVE-2026-80904",
        "evidence": "/id"
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    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 505326,
  "published_at": "2026-09-04T17:19:14.391+00:00"
}