net/rds: No shortcut out of RDS_CONN_ERROR

{
  "id": "735ee44a24245567bb8026d0182eb7f18fe925206c82fddc7bb87ead713b7b7b",
  "url": "https://osv.dev/vulnerability/CVE-2026-43226",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "net/rds: No shortcut out of RDS_CONN_ERROR",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: net/rds: No shortcut out of RDS_CONN_ERROR RDS connections carry a state \"rds_conn_path::cp_state\" and transitions from one state to another and are conditional upon an expected state: \"rds_conn_path_transition.\" There is one exception to this conditionality, which is \"RDS_CONN_ERROR\" that can be enforced by \"rds_conn_path_drop\" regardless of what state the condition is currently in. But as soon as a connection enters state \"RDS_CONN_ERROR\", the connection handling code expects it to go through the shutdown-path. The RDS/TCP multipath changes added a shortcut out of \"RDS_CONN_ERROR\" straight back to \"RDS_CONN_CONNECTING\" via \"rds_tcp_accept_one_path\" (e.g. after \"rds_tcp_state_change\"). A subsequent \"rds_tcp_reset_callbacks\" can then transition the state to \"RDS_CONN_RESETTING\" with a shutdown-worker queued. That'll trip up \"rds_conn_init_shutdown\", which was never adjusted to handle \"RDS_CONN_RESETTING\" and subsequently drops the connection with the dreaded \"DR_INV_CONN_STATE\", which leaves \"RDS_SHUTDOWN_WORK_QUEUED\" on forever. So we do two things here: a) Don't shortcut \"RDS_CONN_ERROR\", but take the longer path through the shutdown code. b) Add \"RDS_CONN_RESETTING\" to the expected states in \"rds_conn_init_shutdown\" so that we won't error out and get stuck, if we ever hit weird state transitions like this again.\"",
    "evidence": "osv:CVE-2026-43226",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.252",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.202",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.165",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.128",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.75",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.16",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.19.6",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-43226",
      "aliases": [
        "CVE-2026-43226"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
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              "type": "GIT",
              "events": [
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                {
                  "fixed": "a179ac7be8f5a650d0068040705f4cddd6ca369c"
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                {
                  "fixed": "19e384a7d00d888303a8285977cdf1970c6cccd6"
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                  "fixed": "f0f729bdffb08af32e0f54521b81b8a9e0321f16"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-43226.json"
          }
        },
        {
          "ranges": [
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              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "4.8.0"
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                {
                  "fixed": "5.10.252"
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          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
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        }
      ],
      "modified": "2026-10-28T02:30:30.665097769Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/19e384a7d00d888303a8285977cdf1970c6cccd6",
        "https://git.kernel.org/stable/c/81248b1eb3c5954cc1fc7b33b7c03e34d20cb8c8",
        "https://git.kernel.org/stable/c/899ef00963ce76f9fc421a7d02335fe4ead6389b",
        "https://git.kernel.org/stable/c/9bcd7c00691a2db9745817d5ea79262a503b135c",
        "https://git.kernel.org/stable/c/9ff599a9be784a808c36765086e3db2144aa3b66",
        "https://git.kernel.org/stable/c/a179ac7be8f5a650d0068040705f4cddd6ca369c",
        "https://git.kernel.org/stable/c/ad22d24be635c6beab6a1fdd3f8b1f3c478d15da",
        "https://git.kernel.org/stable/c/f0f729bdffb08af32e0f54521b81b8a9e0321f16",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43226.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-43226",
        "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/2026/43xxx/CVE-2026-43226.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-43226",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497454,
  "published_at": "2026-05-06T11:28:24.952+00:00"
}