CVE-2026-98560 (GCVE-0-2026-98560)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:18 – Updated: 2026-10-19 09:21
VLAI
Title
net/rds: size a connection's path set by the transport it ends up with
Summary
In the Linux kernel, the following vulnerability has been resolved: net/rds: size a connection's path set by the transport it ends up with __rds_conn_create() computes npaths from the caller's transport before it decides whether a connection to one of the host's own addresses is to be handled by the loopback transport instead. That substitution is what an RDS/TCP socket sending to a local address gets, and after it the path init loop still runs for the TCP transport's RDS_MPATH_WORKERS paths and allocates an ordered workqueue for each, while rds_loop_conn_alloc() only ever provides transport data for path 0. rds_conn_destroy() sizes its teardown from c_trans, by then the loopback transport, so it visits path 0 only - and rds_conn_path_destroy() would skip the other paths anyway, since it returns before destroy_workqueue() for a path without transport data. kfree(c_path) then drops the last pointers to seven workqueues. That repeats for every such connection, on every netns teardown or module unload, and every distinct local destination address is a separate connection. Recompute npaths once the transport is final, so that creation and destruction agree on the set of paths. The c_path array stays sized for the caller's transport; the unused entries are freed with it.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6820 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 4716af3897e95997d08183d351cece2dec9ee0c0 , < 670f303169d2d36f315c40f6d3d18b5ee8498fea (git)
Affected: 4716af3897e95997d08183d351cece2dec9ee0c0 , < ba3d1f480c7a3fba963e7867ad6cc557c197acbc (git)
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Linux Linux Affected: 7.0
Unaffected: 0 , < 7.0 (semver)
Unaffected: 7.2.9 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "net/rds/connection.c"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rds: size a connection\u0027s path set by the transport it ends up with\n\n__rds_conn_create() computes npaths from the caller\u0027s transport before\nit decides whether a connection to one of the host\u0027s own addresses is\nto be handled by the loopback transport instead.  That substitution is\nwhat an RDS/TCP socket sending to a local address gets, and after it\nthe path init loop still runs for the TCP transport\u0027s RDS_MPATH_WORKERS\npaths and allocates an ordered workqueue for each, while\nrds_loop_conn_alloc() only ever provides transport data for path 0.\n\nrds_conn_destroy() sizes its teardown from c_trans, by then the\nloopback transport, so it visits path 0 only - and\nrds_conn_path_destroy() would skip the other paths anyway, since it\nreturns before destroy_workqueue() for a path without transport data.\nkfree(c_path) then drops the last pointers to seven workqueues.  That\nrepeats for every such connection, on every netns teardown or module\nunload, and every distinct local destination address is a separate\nconnection.\n\nRecompute npaths once the transport is final, so that creation and\ndestruction agree on the set of paths.  The c_path array stays sized\nfor the caller\u0027s transport; the unused entries are freed with it."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:21:44.401Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/670f303169d2d36f315c40f6d3d18b5ee8498fea"
        },
        {
          "url": "https://git.kernel.org/stable/c/ba3d1f480c7a3fba963e7867ad6cc557c197acbc"
        }
      ],
      "title": "net/rds: size a connection\u0027s path set by the transport it ends up with",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98560",
    "datePublished": "2026-10-18T15:18:27.162Z",
    "dateReserved": "2026-09-25T10:25:14.357Z",
    "dateUpdated": "2026-10-19T09:21:44.401Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/rds: size a connection\u0027s path set by the transport it ends up with\n\n__rds_conn_create() computes npaths from the caller\u0027s transport before\nit decides whether a connection to one of the host\u0027s own addresses is\nto be handled by the loopback transport instead.  That substitution is\nwhat an RDS/TCP socket sending to a local address gets, and after it\nthe path init loop still runs for the TCP transport\u0027s RDS_MPATH_WORKERS\npaths and allocates an ordered workqueue for each, while\nrds_loop_conn_alloc() only ever provides transport data for path 0.\n\nrds_conn_destroy() sizes its teardown from c_trans, by then the\nloopback transport, so it visits path 0 only - and\nrds_conn_path_destroy() would skip the other paths anyway, since it\nreturns before destroy_workqueue() for a path without transport data.\nkfree(c_path) then drops the last pointers to seven workqueues.  That\nrepeats for every such connection, on every netns teardown or module\nunload, and every distinct local destination address is a separate\nconnection.\n\nRecompute npaths once the transport is final, so that creation and\ndestruction agree on the set of paths.  The c_path array stays sized\nfor the caller\u0027s transport; the unused entries are freed with it."
          }
        ],
        "id": "CVE-2026-98560",
        "lastModified": "2026-10-19T10:19:12.577",
        "metrics": {},
        "published": "2026-10-18T16:17:08.143",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/670f303169d2d36f315c40f6d3d18b5ee8498fea"
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-10-30T08:20:38+00:00",
      "cve": "CVE-2026-98560",
      "id": "CVE-2026-98560",
      "initial_release_date": "2026-10-18T00:00:00+00:00",
      "product_status:known_affected": "14",
      "product_status:known_not_affected": "265",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net/rds: size a connection\u0027s path set by the transport it ends up with",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98560.json",
      "version": "3"
    }
  }
}



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