{
  "cveId": "CVE-2026-98257",
  "url": "https://patchblox.com/security/cve/CVE-2026-98257",
  "summary": "CVE-2026-98257 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-98257, released October 6, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "rds: ib: use rds_conn_drop() on protocol version mismatch",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  rds: ib: use rds_conn_drop() on protocol version mismatch  rds_ib_cm_connect_complete() runs from the RDMA-CM event handler with conn-\u003Ec_cm_lock held.  When the peer negotiates a protocol version older than RDS_PROTOCOL_COMPAT_VERSION, the handler calls rds_conn_destroy(), which is only safe in the rmmod path: it synchronously tears the connection down and flush_work()es the shutdown work cp_down_w.  That shutdown work (rds_conn_shutdown()) needs cp_cm_lock, which is the very lock the event handler still holds, so the flush never completes: the two workers wait on each other and the RDS connection workqueues stall for good.  All other RDMA-CM failure paths (REJECTED, CONNECT_ERROR, DISCONNECTED) use rds_conn_drop(), which marks the connection RDS_CONN_ERROR and schedules the shutdown work asynchronously.  Use it here as well.",
  "published": "2026-10-06T09:18:14Z",
  "severity": "Moderate",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00501,
  "epssPercentile": 0.43192,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-98257",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.1.190-1",
      "fix": "DEBIAN-CVE-2026-98257",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98257",
      "released": "2026-10-06T21:56:27Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.113-1",
      "fix": "DEBIAN-CVE-2026-98257",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98257",
      "released": "2026-10-06T21:56:27Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.8-1",
      "fix": "DEBIAN-CVE-2026-98257",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98257",
      "released": "2026-10-06T21:56:27Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.113-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-98257",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-98257",
      "released": "2026-10-06T21:56:27Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}