CVE-2026-90308

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/erdma: Hold QP references for AE and CM processing AE QP fatal events and iWARP CM paths load QPs from dev->qp_xa and then use or reference them outside the xarray lock. erdma_destroy_qp() can drop the destroy-path reference and free QP resources while such a lookup is in flight. Add erdma_qp_get_by_qpn() to acquire a kref under the xarray lock with kref_get_unless_zero(). Remove the QP from the xarray before dropping the destroy-path reference so no new lookup can acquire it while destruction waits for existing users.

Severity

HIGH

CVSS score

7.8 (v3.1)

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-09-17 17:17:28.520000

Last modified

2026-10-30 13:20:49.247000

View original CVE JSON

{
  "id": "CVE-2026-90308",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-17T17:17:28.520",
  "lastModified": "2026-10-30T13:20:49.247",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/erdma: Hold QP references for AE and CM processing\n\nAE QP fatal events and iWARP CM paths load QPs from dev->qp_xa\nand then use or reference them outside the xarray lock.\nerdma_destroy_qp() can drop the destroy-path reference and free QP\nresources while such a lookup is in flight.\n\nAdd erdma_qp_get_by_qpn() to acquire a kref under the xarray\nlock with kref_get_unless_zero(). Remove the QP from the xarray\nbefore dropping the destroy-path reference so no new lookup can acquire\nit while destruction waits for existing users."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/infiniband/hw/erdma/erdma_cm.c",
            "drivers/infiniband/hw/erdma/erdma_eq.c",
            "drivers/infiniband/hw/erdma/erdma_verbs.c",
            "drivers/infiniband/hw/erdma/erdma_verbs.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "155055771704f8cbb5c176a4309b7dc30a50450c",
              "lessThan": "92101d7bd67cf313d65baede27118614a283f6bf",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "155055771704f8cbb5c176a4309b7dc30a50450c",
              "lessThan": "233f1b7fe2980e4e238fe03dd3ceddfd082cb4c8",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "155055771704f8cbb5c176a4309b7dc30a50450c",
              "lessThan": "6e32f84b63c054e09392153125d7202abab2d14b",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "155055771704f8cbb5c176a4309b7dc30a50450c",
              "lessThan": "ec987c0654651036dad6a42f7fa2a6d7c16a3687",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "155055771704f8cbb5c176a4309b7dc30a50450c",
              "lessThan": "c92686867638cda954fdb2bdbac8a75e3aa6eaae",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "155055771704f8cbb5c176a4309b7dc30a50450c",
              "lessThan": "a52eeff32024f190b3bdc99088c7becccd4fa60b",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/infiniband/hw/erdma/erdma_cm.c",
            "drivers/infiniband/hw/erdma/erdma_eq.c",
            "drivers/infiniband/hw/erdma/erdma_verbs.c",
            "drivers/infiniband/hw/erdma/erdma_verbs.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.0",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.0",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.191",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.160",
              "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",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      }
    ]
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/233f1b7fe2980e4e238fe03dd3ceddfd082cb4c8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6e32f84b63c054e09392153125d7202abab2d14b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/92101d7bd67cf313d65baede27118614a283f6bf",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a52eeff32024f190b3bdc99088c7becccd4fa60b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c92686867638cda954fdb2bdbac8a75e3aa6eaae",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ec987c0654651036dad6a42f7fa2a6d7c16a3687",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}