CVE-2022-50135 (GCVE-0-2022-50135)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:02 – Updated: 2025-06-18 11:02
VLAI?
Title
RDMA/rxe: Fix BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup The function rxe_create_qp calls rxe_qp_from_init. If some error occurs, the error handler of function rxe_qp_from_init will set both scq and rcq to NULL. Then rxe_create_qp calls rxe_put to handle qp. In the end, rxe_qp_do_cleanup is called by rxe_put. rxe_qp_do_cleanup directly accesses scq and rcq before checking them. This will cause null-ptr-deref error. The call graph is as below: rxe_create_qp { ... rxe_qp_from_init { ... err1: ... qp->rcq = NULL; <---rcq is set to NULL qp->scq = NULL; <---scq is set to NULL ... } qp_init: rxe_put{ ... rxe_qp_do_cleanup { ... atomic_dec(&qp->scq->num_wq); <--- scq is accessed ... atomic_dec(&qp->rcq->num_wq); <--- rcq is accessed } }
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 4703b4f0d94a5f887297713a2f6c2916a1ef08fd , < 8598b9d0a364c1663c96fc0fab9df0d36c809aea (git)
Affected: 4703b4f0d94a5f887297713a2f6c2916a1ef08fd , < 37da51efe6eaa0560f46803c8c436a48a2084da7 (git)
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    Linux Linux Affected: 5.19
Unaffected: 0 , < 5.19 (semver)
Unaffected: 5.19.2 , ≤ 5.19.* (semver)
Unaffected: 6.0 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/sw/rxe/rxe_qp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "8598b9d0a364c1663c96fc0fab9df0d36c809aea",
              "status": "affected",
              "version": "4703b4f0d94a5f887297713a2f6c2916a1ef08fd",
              "versionType": "git"
            },
            {
              "lessThan": "37da51efe6eaa0560f46803c8c436a48a2084da7",
              "status": "affected",
              "version": "4703b4f0d94a5f887297713a2f6c2916a1ef08fd",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/sw/rxe/rxe_qp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.19"
            },
            {
              "lessThan": "5.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.19.*",
              "status": "unaffected",
              "version": "5.19.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.2",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0",
                  "versionStartIncluding": "5.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup\n\nThe function rxe_create_qp calls rxe_qp_from_init. If some error\noccurs, the error handler of function rxe_qp_from_init will set\nboth scq and rcq to NULL.\n\nThen rxe_create_qp calls rxe_put to handle qp. In the end,\nrxe_qp_do_cleanup is called by rxe_put. rxe_qp_do_cleanup directly\naccesses scq and rcq before checking them. This will cause\nnull-ptr-deref error.\n\nThe call graph is as below:\n\nrxe_create_qp {\n  ...\n  rxe_qp_from_init {\n    ...\n  err1:\n    ...\n    qp-\u003ercq = NULL;  \u003c---rcq is set to NULL\n    qp-\u003escq = NULL;  \u003c---scq is set to NULL\n    ...\n  }\n\nqp_init:\n  rxe_put{\n    ...\n    rxe_qp_do_cleanup {\n      ...\n      atomic_dec(\u0026qp-\u003escq-\u003enum_wq); \u003c--- scq is accessed\n      ...\n      atomic_dec(\u0026qp-\u003ercq-\u003enum_wq); \u003c--- rcq is accessed\n    }\n}"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-18T11:02:59.440Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8598b9d0a364c1663c96fc0fab9df0d36c809aea"
        },
        {
          "url": "https://git.kernel.org/stable/c/37da51efe6eaa0560f46803c8c436a48a2084da7"
        }
      ],
      "title": "RDMA/rxe: Fix BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-50135",
    "datePublished": "2025-06-18T11:02:59.440Z",
    "dateReserved": "2025-06-18T10:57:27.421Z",
    "dateUpdated": "2025-06-18T11:02:59.440Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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