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RDMA/rtrs-clt: Fix CQ pool leak when connect is interrupted

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: RDMA/rtrs-clt: Fix CQ pool leak when connect is interrupted The client borrows shared CQ credits in the ADDR_RESOLVED handler via ib_cq_pool_get(), before the peer is connected. create_cm() can return -ERESTARTSYS from wait_event_interruptible_timeout() without destroying the CM ID. The init_conns() and stop-and-destroy paths then call destroy_con_cq_qp() while cq is still NULL (no PUT) and only afterwards rdma_destroy_id(). CMA serializes the handler against rdma_destroy_id() with handler_mutex, but that does not order the GET against destroy_con_cq_qp(). If ADDR_RESOLVED has already passed the DESTROYING check, it can take con_mutex, GET credits, and then lose the con to kfree. Device unregister later hits WARN_ON(cq->cqe_used) in ib_cq_pool_cleanup(). Set a per-connection flag under con_mutex before CQ/QP teardown so a racing ADDR_RESOLVED cannot borrow credits after teardown has begun.

Announced Source revision 1
Original source ↗

CVE-2026-98352

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-98352

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3b89e92c2a95a39c38a3808f4528e502a39bd94d",
        "lessThan": "a82cca40139d9fcae8208901856bd5bb4051f097",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3b89e92c2a95a39c38a3808f4528e502a39bd94d",
        "lessThan": "74c4ed55e61f1b65ddbebc5b635d136461a1c3da",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3b89e92c2a95a39c38a3808f4528e502a39bd94d",
        "lessThan": "6f8020fe7465f49e234a576c04e415e9d08c7878",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3b89e92c2a95a39c38a3808f4528e502a39bd94d",
        "lessThan": "31024e158b45358370a0a14ed96589e6aa62d6cb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3b89e92c2a95a39c38a3808f4528e502a39bd94d",
        "lessThan": "8f253d5893f991742464b9e7203c43fc08d0aa11",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3b89e92c2a95a39c38a3808f4528e502a39bd94d",
        "lessThan": "bf88ac4867050112a6c819c8d1a7209bf48ef427",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "3b89e92c2a95a39c38a3808f4528e502a39bd94d",
        "lessThan": "2ae16aaa78b5edc6e6d0904c84fd9cdfb762bcda",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/infiniband/ulp/rtrs/rtrs-clt.c",
      "drivers/infiniband/ulp/rtrs/rtrs-clt.h"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.13"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.13",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.15.222",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.189",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.158",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.112",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.54",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.8",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/infiniband/ulp/rtrs/rtrs-clt.c",
      "drivers/infiniband/ulp/rtrs/rtrs-clt.h"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-98352

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#38431 · Revision 1
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