FKIE_CVE-2026-98352

Vulnerability from fkie_nvd - Published: 2026-10-06 09:18 - Updated: 2026-10-06 09:18
Severity
Summary
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.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2ae16aaa78b5edc6e6d0904c84fd9cdfb762bcda
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/31024e158b45358370a0a14ed96589e6aa62d6cb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6f8020fe7465f49e234a576c04e415e9d08c7878
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/74c4ed55e61f1b65ddbebc5b635d136461a1c3da
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8f253d5893f991742464b9e7203c43fc08d0aa11
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a82cca40139d9fcae8208901856bd5bb4051f097
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bf88ac4867050112a6c819c8d1a7209bf48ef427
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/ulp/rtrs/rtrs-clt.c",
            "drivers/infiniband/ulp/rtrs/rtrs-clt.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "a82cca40139d9fcae8208901856bd5bb4051f097",
              "status": "affected",
              "version": "3b89e92c2a95a39c38a3808f4528e502a39bd94d",
              "versionType": "git"
            },
            {
              "lessThan": "74c4ed55e61f1b65ddbebc5b635d136461a1c3da",
              "status": "affected",
              "version": "3b89e92c2a95a39c38a3808f4528e502a39bd94d",
              "versionType": "git"
            },
            {
              "lessThan": "6f8020fe7465f49e234a576c04e415e9d08c7878",
              "status": "affected",
              "version": "3b89e92c2a95a39c38a3808f4528e502a39bd94d",
              "versionType": "git"
            },
            {
              "lessThan": "31024e158b45358370a0a14ed96589e6aa62d6cb",
              "status": "affected",
              "version": "3b89e92c2a95a39c38a3808f4528e502a39bd94d",
              "versionType": "git"
            },
            {
              "lessThan": "8f253d5893f991742464b9e7203c43fc08d0aa11",
              "status": "affected",
              "version": "3b89e92c2a95a39c38a3808f4528e502a39bd94d",
              "versionType": "git"
            },
            {
              "lessThan": "bf88ac4867050112a6c819c8d1a7209bf48ef427",
              "status": "affected",
              "version": "3b89e92c2a95a39c38a3808f4528e502a39bd94d",
              "versionType": "git"
            },
            {
              "lessThan": "2ae16aaa78b5edc6e6d0904c84fd9cdfb762bcda",
              "status": "affected",
              "version": "3b89e92c2a95a39c38a3808f4528e502a39bd94d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/ulp/rtrs/rtrs-clt.c",
            "drivers/infiniband/ulp/rtrs/rtrs-clt.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rtrs-clt: Fix CQ pool leak when connect is interrupted\n\nThe client borrows shared CQ credits in the ADDR_RESOLVED handler via\nib_cq_pool_get(), before the peer is connected. create_cm() can return\n-ERESTARTSYS from wait_event_interruptible_timeout() without destroying\nthe CM ID. The init_conns() and stop-and-destroy paths then call\ndestroy_con_cq_qp() while cq is still NULL (no PUT) and only afterwards\nrdma_destroy_id().\n\nCMA serializes the handler against rdma_destroy_id() with handler_mutex,\nbut that does not order the GET against destroy_con_cq_qp(). If\nADDR_RESOLVED has already passed the DESTROYING check, it can take\ncon_mutex, GET credits, and then lose the con to kfree. Device\nunregister later hits WARN_ON(cq-\u003ecqe_used) in ib_cq_pool_cleanup().\n\nSet a per-connection flag under con_mutex before CQ/QP teardown so a\nracing ADDR_RESOLVED cannot borrow credits after teardown has begun."
    }
  ],
  "id": "CVE-2026-98352",
  "lastModified": "2026-10-06T09:18:28.587",
  "metrics": {},
  "published": "2026-10-06T09:18:28.587",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2ae16aaa78b5edc6e6d0904c84fd9cdfb762bcda"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/31024e158b45358370a0a14ed96589e6aa62d6cb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6f8020fe7465f49e234a576c04e415e9d08c7878"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/74c4ed55e61f1b65ddbebc5b635d136461a1c3da"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8f253d5893f991742464b9e7203c43fc08d0aa11"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a82cca40139d9fcae8208901856bd5bb4051f097"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bf88ac4867050112a6c819c8d1a7209bf48ef427"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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