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CVE-2026-93151 (GCVE-0-2026-93151)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:11 – Updated: 2026-09-17 16:11
VLAI
Title
nvmet-rdma: fix response resource leak on queue teardown
Summary
In the Linux kernel, the following vulnerability has been resolved: nvmet-rdma: fix response resource leak on queue teardown When an nvme target with rdma transport is removed while I/Os are in flight, a response can be posted but its send completion is never delivered before the connection is torn down. As a result nvmet_rdma_send_done() and nvmet_rdma_release_rsp() are never called for the response, and this leaks the allocated RDMA read/write context and request SGLs. These leaks are recreated by running blktests nvme/061 with the rdma transport and the siw driver. Kernel kmemleak feature reports them as follows: unreferenced object 0xffff88812bc490c0 (size 32): comm "kworker/2:1H", pid 409, jiffies 4307744490 backtrace (crc 89afd339): __kmalloc_noprof+0x5f9/0x890 sgl_alloc_order+0x7b/0x380 nvmet_req_alloc_sgls+0x290/0x4f0 [nvmet] nvmet_rdma_map_sgl_keyed+0x241/0x12e0 [nvmet_rdma] nvmet_rdma_handle_command+0x73e/0xb80 [nvmet_rdma] __ib_process_cq+0x149/0x4c0 [ib_core] ib_cq_poll_work+0x49/0x160 [ib_core] process_one_work+0x8b2/0x1640 worker_thread+0x5fd/0xfe0 kthread+0x367/0x460 ret_from_fork+0x655/0x9d0 ret_from_fork_asm+0x1a/0x30 unreferenced object 0xffff88814bd05e80 (size 64): comm "kworker/3:1H", pid 148, jiffies 4295195428 backtrace (crc e35510cb): __kmalloc_noprof+0x5f9/0x890 rdma_rw_ctx_init+0x333/0x1fa0 [ib_core] nvmet_rdma_map_sgl_keyed+0x5c8/0x12e0 [nvmet_rdma] nvmet_rdma_handle_command+0x73e/0xb80 [nvmet_rdma] __ib_process_cq+0x149/0x4c0 [ib_core] ib_cq_poll_work+0x49/0x160 [ib_core] process_one_work+0x8b2/0x1640 worker_thread+0x5fd/0xfe0 kthread+0x367/0x460 ret_from_fork+0x655/0x9d0 ret_from_fork_asm+0x1a/0x30 To avoid the memory leaks, reclaim the memory of the in-flight responses when the queue QP is torn down. Call nvmet_rdma_free_rsp_resources() that frees up the RDMA read/write context and the request SGLs of such responses.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8f000cac6e7a6edca7ab93bafc7ed28b27c1545b , < 91cfa74f1f3772e8c3662c064a45d8633e00c78e (git)
Affected: 8f000cac6e7a6edca7ab93bafc7ed28b27c1545b , < 156ec10a8be2c33b0c279d8b2f4fe8e16fa89ef7 (git)
Affected: 8f000cac6e7a6edca7ab93bafc7ed28b27c1545b , < 9584b3c30e4ee8ca315bdc12249cc6c47cf1a482 (git)
Affected: 8f000cac6e7a6edca7ab93bafc7ed28b27c1545b , < 5cc3b21729d45b5af8f79891f9dedb7e6b6dbd08 (git)
Affected: 8f000cac6e7a6edca7ab93bafc7ed28b27c1545b , < ca795fc1d8a1a4ab0e6bd1d27c9adb78d4ed1a1c (git)
Affected: 8f000cac6e7a6edca7ab93bafc7ed28b27c1545b , < d553a9dc1c45666e76d8d2ac9a4f8ff0cbf53a50 (git)
Affected: 8f000cac6e7a6edca7ab93bafc7ed28b27c1545b , < 0114dd303b373522dea06053aabae34bdd33a7c4 (git)
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Linux Linux Affected: 4.8
Unaffected: 0 , < 4.8 (semver)
Unaffected: 5.15.221 , ≤ 5.15.* (semver)
Unaffected: 6.1.188 , ≤ 6.1.* (semver)
Unaffected: 6.6.157 , ≤ 6.6.* (semver)
Unaffected: 6.12.110 , ≤ 6.12.* (semver)
Unaffected: 6.18.52 , ≤ 6.18.* (semver)
Unaffected: 7.2.6 , ≤ 7.2.* (semver)
Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/target/rdma.c"
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              "version": "6.1.188",
              "versionType": "semver"
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              "version": "6.6.157",
              "versionType": "semver"
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              "version": "7.2.6",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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          "nodes": [
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              "cpeMatch": [
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                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "4.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-rdma: fix response resource leak on queue teardown\n\nWhen an nvme target with rdma transport is removed while I/Os are in\nflight, a response can be posted but its send completion is never\ndelivered before the connection is torn down. As a result\nnvmet_rdma_send_done() and nvmet_rdma_release_rsp() are never called for\nthe response, and this leaks the allocated RDMA read/write context and\nrequest SGLs.\n\nThese leaks are recreated by running blktests nvme/061 with the rdma\ntransport and the siw driver. Kernel kmemleak feature reports them as\nfollows:\n\n  unreferenced object 0xffff88812bc490c0 (size 32):\n    comm \"kworker/2:1H\", pid 409, jiffies 4307744490\n    backtrace (crc 89afd339):\n      __kmalloc_noprof+0x5f9/0x890\n      sgl_alloc_order+0x7b/0x380\n      nvmet_req_alloc_sgls+0x290/0x4f0 [nvmet]\n      nvmet_rdma_map_sgl_keyed+0x241/0x12e0 [nvmet_rdma]\n      nvmet_rdma_handle_command+0x73e/0xb80 [nvmet_rdma]\n      __ib_process_cq+0x149/0x4c0 [ib_core]\n      ib_cq_poll_work+0x49/0x160 [ib_core]\n      process_one_work+0x8b2/0x1640\n      worker_thread+0x5fd/0xfe0\n      kthread+0x367/0x460\n      ret_from_fork+0x655/0x9d0\n      ret_from_fork_asm+0x1a/0x30\n\n  unreferenced object 0xffff88814bd05e80 (size 64):\n    comm \"kworker/3:1H\", pid 148, jiffies 4295195428\n    backtrace (crc e35510cb):\n      __kmalloc_noprof+0x5f9/0x890\n      rdma_rw_ctx_init+0x333/0x1fa0 [ib_core]\n      nvmet_rdma_map_sgl_keyed+0x5c8/0x12e0 [nvmet_rdma]\n      nvmet_rdma_handle_command+0x73e/0xb80 [nvmet_rdma]\n      __ib_process_cq+0x149/0x4c0 [ib_core]\n      ib_cq_poll_work+0x49/0x160 [ib_core]\n      process_one_work+0x8b2/0x1640\n      worker_thread+0x5fd/0xfe0\n      kthread+0x367/0x460\n      ret_from_fork+0x655/0x9d0\n      ret_from_fork_asm+0x1a/0x30\n\nTo avoid the memory leaks, reclaim the memory of the in-flight responses\nwhen the queue QP is torn down. Call nvmet_rdma_free_rsp_resources()\nthat frees up the RDMA read/write context and the request SGLs of such\nresponses."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:11:47.559Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/91cfa74f1f3772e8c3662c064a45d8633e00c78e"
        },
        {
          "url": "https://git.kernel.org/stable/c/156ec10a8be2c33b0c279d8b2f4fe8e16fa89ef7"
        },
        {
          "url": "https://git.kernel.org/stable/c/9584b3c30e4ee8ca315bdc12249cc6c47cf1a482"
        },
        {
          "url": "https://git.kernel.org/stable/c/5cc3b21729d45b5af8f79891f9dedb7e6b6dbd08"
        },
        {
          "url": "https://git.kernel.org/stable/c/ca795fc1d8a1a4ab0e6bd1d27c9adb78d4ed1a1c"
        },
        {
          "url": "https://git.kernel.org/stable/c/d553a9dc1c45666e76d8d2ac9a4f8ff0cbf53a50"
        },
        {
          "url": "https://git.kernel.org/stable/c/0114dd303b373522dea06053aabae34bdd33a7c4"
        }
      ],
      "title": "nvmet-rdma: fix response resource leak on queue teardown",
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93151",
    "datePublished": "2026-09-17T16:11:47.559Z",
    "dateReserved": "2026-09-17T16:02:15.089Z",
    "dateUpdated": "2026-09-17T16:11:47.559Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-93151\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-09-17T17:18:10.337\",\"lastModified\":\"2026-09-17T17:18:10.337\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nnvmet-rdma: fix response resource leak on queue teardown\\n\\nWhen an nvme target with rdma transport is removed while I/Os are in\\nflight, a response can be posted but its send completion is never\\ndelivered before the connection is torn down. As a result\\nnvmet_rdma_send_done() and nvmet_rdma_release_rsp() are never called for\\nthe response, and this leaks the allocated RDMA read/write context and\\nrequest SGLs.\\n\\nThese leaks are recreated by running blktests nvme/061 with the rdma\\ntransport and the siw driver. Kernel kmemleak feature reports them as\\nfollows:\\n\\n  unreferenced object 0xffff88812bc490c0 (size 32):\\n    comm \\\"kworker/2:1H\\\", pid 409, jiffies 4307744490\\n    backtrace (crc 89afd339):\\n      __kmalloc_noprof+0x5f9/0x890\\n      sgl_alloc_order+0x7b/0x380\\n      nvmet_req_alloc_sgls+0x290/0x4f0 [nvmet]\\n      nvmet_rdma_map_sgl_keyed+0x241/0x12e0 [nvmet_rdma]\\n      nvmet_rdma_handle_command+0x73e/0xb80 [nvmet_rdma]\\n      __ib_process_cq+0x149/0x4c0 [ib_core]\\n      ib_cq_poll_work+0x49/0x160 [ib_core]\\n      process_one_work+0x8b2/0x1640\\n      worker_thread+0x5fd/0xfe0\\n      kthread+0x367/0x460\\n      ret_from_fork+0x655/0x9d0\\n      ret_from_fork_asm+0x1a/0x30\\n\\n  unreferenced object 0xffff88814bd05e80 (size 64):\\n    comm \\\"kworker/3:1H\\\", pid 148, jiffies 4295195428\\n    backtrace (crc e35510cb):\\n      __kmalloc_noprof+0x5f9/0x890\\n      rdma_rw_ctx_init+0x333/0x1fa0 [ib_core]\\n      nvmet_rdma_map_sgl_keyed+0x5c8/0x12e0 [nvmet_rdma]\\n      nvmet_rdma_handle_command+0x73e/0xb80 [nvmet_rdma]\\n      __ib_process_cq+0x149/0x4c0 [ib_core]\\n      ib_cq_poll_work+0x49/0x160 [ib_core]\\n      process_one_work+0x8b2/0x1640\\n      worker_thread+0x5fd/0xfe0\\n      kthread+0x367/0x460\\n      ret_from_fork+0x655/0x9d0\\n      ret_from_fork_asm+0x1a/0x30\\n\\nTo avoid the memory leaks, reclaim the memory of the in-flight responses\\nwhen the queue QP is torn down. Call nvmet_rdma_free_rsp_resources()\\nthat frees up the RDMA read/write context and the request SGLs of such\\nresponses.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/nvme/target/rdma.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"8f000cac6e7a6edca7ab93bafc7ed28b27c1545b\",\"lessThan\":\"91cfa74f1f3772e8c3662c064a45d8633e00c78e\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8f000cac6e7a6edca7ab93bafc7ed28b27c1545b\",\"lessThan\":\"156ec10a8be2c33b0c279d8b2f4fe8e16fa89ef7\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8f000cac6e7a6edca7ab93bafc7ed28b27c1545b\",\"lessThan\":\"9584b3c30e4ee8ca315bdc12249cc6c47cf1a482\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8f000cac6e7a6edca7ab93bafc7ed28b27c1545b\",\"lessThan\":\"5cc3b21729d45b5af8f79891f9dedb7e6b6dbd08\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8f000cac6e7a6edca7ab93bafc7ed28b27c1545b\",\"lessThan\":\"ca795fc1d8a1a4ab0e6bd1d27c9adb78d4ed1a1c\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8f000cac6e7a6edca7ab93bafc7ed28b27c1545b\",\"lessThan\":\"d553a9dc1c45666e76d8d2ac9a4f8ff0cbf53a50\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"8f000cac6e7a6edca7ab93bafc7ed28b27c1545b\",\"lessThan\":\"0114dd303b373522dea06053aabae34bdd33a7c4\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/nvme/target/rdma.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"4.8\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"4.8\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.221\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.188\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.157\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.110\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.52\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2.6\",\"lessThanOrEqual\":\"7.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.3-rc1\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/0114dd303b373522dea06053aabae34bdd33a7c4\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/156ec10a8be2c33b0c279d8b2f4fe8e16fa89ef7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5cc3b21729d45b5af8f79891f9dedb7e6b6dbd08\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/91cfa74f1f3772e8c3662c064a45d8633e00c78e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/9584b3c30e4ee8ca315bdc12249cc6c47cf1a482\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/ca795fc1d8a1a4ab0e6bd1d27c9adb78d4ed1a1c\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d553a9dc1c45666e76d8d2ac9a4f8ff0cbf53a50\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}



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