{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "662fbcec32f4af6bdcf5b4006b792ebe9543d945"
            },
            {
              "fixed": "0867b0f2513ebc1c475af9898c97f4772a68d964"
            },
            {
              "fixed": "c6b440cf766a557b08d25f1b571b3d57d039686e"
            },
            {
              "fixed": "e8a4c9fc437b16aef38f86ce3275677e36924259"
            },
            {
              "fixed": "ebc295ce343600c2d60c1e1e0c5d192080217457"
            },
            {
              "fixed": "3be28e2c9cd0230cb51fd4967df095273afd3848"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.6.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72330.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/tls: Consume empty data records in tls_sw_read_sock()\n\nA peer may send a zero-length TLS application_data record; TLS 1.3\nexplicitly permits these as a traffic-analysis countermeasure (RFC\n8446, Section 5.1). After decryption such a record has full_len ==\n0. tls_sw_read_sock() hands it to the read_actor, which has no\npayload to consume and returns zero. The loop treats a zero return\nas backpressure (used \u003c= 0), requeues the skb at the head of\nrx_list, and stops. rx_list is serviced head-first on the next\ncall, so the empty record is dequeued, fails the same way, and is\nrequeued again; every later record on the connection is blocked\nbehind it.\n\ntls_sw_recvmsg() does not stall on this: a zero-length data record\ncopies nothing and falls through to consume_skb(). Mirror that in\nthe read_sock() path by recognizing an empty data record before\nthe actor runs, consuming it, and continuing.",
  "id": "CVE-2026-72330",
  "modified": "2026-08-18T03:31:20.820238535Z",
  "published": "2026-08-15T05:55:40.555Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0867b0f2513ebc1c475af9898c97f4772a68d964"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3be28e2c9cd0230cb51fd4967df095273afd3848"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c6b440cf766a557b08d25f1b571b3d57d039686e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e8a4c9fc437b16aef38f86ce3275677e36924259"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ebc295ce343600c2d60c1e1e0c5d192080217457"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72330.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72330"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net/tls: Consume empty data records in tls_sw_read_sock()"
}