Vulnerability-Lookup

CVE-2026-92511 (GCVE-0-2026-92511)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:10 – Updated: 2026-09-17 16:10

Title

RDMA/core: Fix potential use after free in ib_destroy_cq_user()

Summary

In the Linux kernel, the following vulnerability has been resolved: RDMA/core: Fix potential use after free in ib_destroy_cq_user() When accessing a CQ via the netlink path the only synchronization mechanism for the said CQ is rdma_restrack_get(). Currently, rdma_restrack_del() is invoked at the end of ib_destroy_cq_user(), which is too late, since by that point vendor-specific resources associated with the CQ might already be freed. This can leave a short window where the CQ remains accessible through restrack, leading to a potential use-after-free. Fix this by moving the rdma_restrack_begin_del() call to the start of ib_destroy_cq_user(), ensuring that the CQ is removed from restrack before its internal resources are released. This guarantees that no new users hold references to a CQ that is in the process of destruction. In addition, this change preserves the intended inverted order between create and destroy routines: resources are added to restrack at the end of successful creation, and hence shall be removed from the restrack first thing during the destruction flow, which keeps the lifecycle management consistent and predictable.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

6 references

URL	Tags
https://git.kernel.org/stable/c/42f7a0c7a94003059…
https://git.kernel.org/stable/c/253c2ed71a532c70f…
https://git.kernel.org/stable/c/b85a148731eceffac…
https://git.kernel.org/stable/c/197c262dbf94c0f7a…
https://git.kernel.org/stable/c/8a72a6aad84b3928d…
https://git.kernel.org/stable/c/3481bec4dfc4aee24…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 08f294a1524bc3211a28091daa6c7513828c7d33 , < 42f7a0c7a94003059540cce448acabfa62ad119d (git) Affected: 08f294a1524bc3211a28091daa6c7513828c7d33 , < 253c2ed71a532c70fa0e64317ceb02bb1a50c84c (git) Affected: 08f294a1524bc3211a28091daa6c7513828c7d33 , < b85a148731eceffacb6a030950187d785175607f (git) Affected: 08f294a1524bc3211a28091daa6c7513828c7d33 , < 197c262dbf94c0f7ab7ac54b66f892ce9f343232 (git) Affected: 08f294a1524bc3211a28091daa6c7513828c7d33 , < 8a72a6aad84b3928dbb5e564bff1f56a7ec222ae (git) Affected: 08f294a1524bc3211a28091daa6c7513828c7d33 , < 3481bec4dfc4aee24ffea5a547ee95b70b67d9d5 (git)	guessed
Linux	Linux	Affected: 4.16 Unaffected: 0 , < 4.16 (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)	guessed

Show details on NVD website

JSON

To clipboard

{
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      "affected": [
        {
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          "product": "Linux",
          "programFiles": [
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          "vendor": "Linux",
          "versions": [
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          "versions": [
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            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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            {
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "4.16",
                  "vulnerable": true
                },
                {
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Fix potential use after free in ib_destroy_cq_user()\n\nWhen accessing a CQ via the netlink path the only synchronization\nmechanism for the said CQ is rdma_restrack_get().\nCurrently, rdma_restrack_del() is invoked at the end of\nib_destroy_cq_user(), which is too late, since by that point\nvendor-specific resources associated with the CQ might already be\nfreed. This can leave a short window where the CQ remains accessible\nthrough restrack, leading to a potential use-after-free.\n\nFix this by moving the rdma_restrack_begin_del() call to the start of\nib_destroy_cq_user(), ensuring that the CQ is removed from restrack\nbefore its internal resources are released. This guarantees that no new\nusers hold references to a CQ that is in the process of destruction.\n\nIn addition, this change preserves the intended inverted order\nbetween create and destroy routines: resources are added to\nrestrack at the end of successful creation, and hence shall be removed\nfrom the restrack first thing during the destruction flow, which keeps\nthe lifecycle management consistent and predictable."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:10:21.449Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/42f7a0c7a94003059540cce448acabfa62ad119d"
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        {
          "url": "https://git.kernel.org/stable/c/253c2ed71a532c70fa0e64317ceb02bb1a50c84c"
        },
        {
          "url": "https://git.kernel.org/stable/c/b85a148731eceffacb6a030950187d785175607f"
        },
        {
          "url": "https://git.kernel.org/stable/c/197c262dbf94c0f7ab7ac54b66f892ce9f343232"
        },
        {
          "url": "https://git.kernel.org/stable/c/8a72a6aad84b3928dbb5e564bff1f56a7ec222ae"
        },
        {
          "url": "https://git.kernel.org/stable/c/3481bec4dfc4aee24ffea5a547ee95b70b67d9d5"
        }
      ],
      "title": "RDMA/core: Fix potential use after free in ib_destroy_cq_user()",
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      }
    }
  },
  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-92511",
    "datePublished": "2026-09-17T16:10:21.449Z",
    "dateReserved": "2026-09-16T12:21:13.872Z",
    "dateUpdated": "2026-09-17T16:10:21.449Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
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        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/infiniband/core/verbs.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "42f7a0c7a94003059540cce448acabfa62ad119d",
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                    "versionType": "git"
                  },
                  {
                    "lessThan": "253c2ed71a532c70fa0e64317ceb02bb1a50c84c",
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                    "versionType": "git"
                  },
                  {
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                    "versionType": "git"
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                    "versionType": "git"
                  },
                  {
                    "lessThan": "8a72a6aad84b3928dbb5e564bff1f56a7ec222ae",
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                    "versionType": "git"
                  },
                  {
                    "lessThan": "3481bec4dfc4aee24ffea5a547ee95b70b67d9d5",
                    "status": "affected",
                    "version": "08f294a1524bc3211a28091daa6c7513828c7d33",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/infiniband/core/verbs.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "4.16"
                  },
                  {
                    "lessThan": "4.16",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.188",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.157",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.110",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.52",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.2.*",
                    "status": "unaffected",
                    "version": "7.2.6",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
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                    "version": "7.3-rc1",
                    "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/core: Fix potential use after free in ib_destroy_cq_user()\n\nWhen accessing a CQ via the netlink path the only synchronization\nmechanism for the said CQ is rdma_restrack_get().\nCurrently, rdma_restrack_del() is invoked at the end of\nib_destroy_cq_user(), which is too late, since by that point\nvendor-specific resources associated with the CQ might already be\nfreed. This can leave a short window where the CQ remains accessible\nthrough restrack, leading to a potential use-after-free.\n\nFix this by moving the rdma_restrack_begin_del() call to the start of\nib_destroy_cq_user(), ensuring that the CQ is removed from restrack\nbefore its internal resources are released. This guarantees that no new\nusers hold references to a CQ that is in the process of destruction.\n\nIn addition, this change preserves the intended inverted order\nbetween create and destroy routines: resources are added to\nrestrack at the end of successful creation, and hence shall be removed\nfrom the restrack first thing during the destruction flow, which keeps\nthe lifecycle management consistent and predictable."
          }
        ],
        "id": "CVE-2026-92511",
        "lastModified": "2026-09-17T17:17:53.850",
        "metrics": {},
        "published": "2026-09-17T17:17:53.850",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/197c262dbf94c0f7ab7ac54b66f892ce9f343232"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/253c2ed71a532c70fa0e64317ceb02bb1a50c84c"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/3481bec4dfc4aee24ffea5a547ee95b70b67d9d5"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/42f7a0c7a94003059540cce448acabfa62ad119d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}

FKIE_CVE-2026-92511

Vulnerability from fkie_nvd - Published: 2026-09-17 17:17 - Updated: 2026-09-17 17:17

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/197c262dbf94c0f7ab7ac54b66f892ce9f343232
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/253c2ed71a532c70fa0e64317ceb02bb1a50c84c
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3481bec4dfc4aee24ffea5a547ee95b70b67d9d5
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/42f7a0c7a94003059540cce448acabfa62ad119d
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8a72a6aad84b3928dbb5e564bff1f56a7ec222ae
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b85a148731eceffacb6a030950187d785175607f

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/core/verbs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "42f7a0c7a94003059540cce448acabfa62ad119d",
              "status": "affected",
              "version": "08f294a1524bc3211a28091daa6c7513828c7d33",
              "versionType": "git"
            },
            {
              "lessThan": "253c2ed71a532c70fa0e64317ceb02bb1a50c84c",
              "status": "affected",
              "version": "08f294a1524bc3211a28091daa6c7513828c7d33",
              "versionType": "git"
            },
            {
              "lessThan": "b85a148731eceffacb6a030950187d785175607f",
              "status": "affected",
              "version": "08f294a1524bc3211a28091daa6c7513828c7d33",
              "versionType": "git"
            },
            {
              "lessThan": "197c262dbf94c0f7ab7ac54b66f892ce9f343232",
              "status": "affected",
              "version": "08f294a1524bc3211a28091daa6c7513828c7d33",
              "versionType": "git"
            },
            {
              "lessThan": "8a72a6aad84b3928dbb5e564bff1f56a7ec222ae",
              "status": "affected",
              "version": "08f294a1524bc3211a28091daa6c7513828c7d33",
              "versionType": "git"
            },
            {
              "lessThan": "3481bec4dfc4aee24ffea5a547ee95b70b67d9d5",
              "status": "affected",
              "version": "08f294a1524bc3211a28091daa6c7513828c7d33",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/core/verbs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.16"
            },
            {
              "lessThan": "4.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "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/core: Fix potential use after free in ib_destroy_cq_user()\n\nWhen accessing a CQ via the netlink path the only synchronization\nmechanism for the said CQ is rdma_restrack_get().\nCurrently, rdma_restrack_del() is invoked at the end of\nib_destroy_cq_user(), which is too late, since by that point\nvendor-specific resources associated with the CQ might already be\nfreed. This can leave a short window where the CQ remains accessible\nthrough restrack, leading to a potential use-after-free.\n\nFix this by moving the rdma_restrack_begin_del() call to the start of\nib_destroy_cq_user(), ensuring that the CQ is removed from restrack\nbefore its internal resources are released. This guarantees that no new\nusers hold references to a CQ that is in the process of destruction.\n\nIn addition, this change preserves the intended inverted order\nbetween create and destroy routines: resources are added to\nrestrack at the end of successful creation, and hence shall be removed\nfrom the restrack first thing during the destruction flow, which keeps\nthe lifecycle management consistent and predictable."
    }
  ],
  "id": "CVE-2026-92511",
  "lastModified": "2026-09-17T17:17:53.850",
  "metrics": {},
  "published": "2026-09-17T17:17:53.850",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/197c262dbf94c0f7ab7ac54b66f892ce9f343232"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/253c2ed71a532c70fa0e64317ceb02bb1a50c84c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3481bec4dfc4aee24ffea5a547ee95b70b67d9d5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/42f7a0c7a94003059540cce448acabfa62ad119d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8a72a6aad84b3928dbb5e564bff1f56a7ec222ae"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b85a148731eceffacb6a030950187d785175607f"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-RX24-HF7H-RF8W

Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32

Details

In the Linux kernel, the following vulnerability has been resolved:

RDMA/core: Fix potential use after free in ib_destroy_cq_user()

When accessing a CQ via the netlink path the only synchronization mechanism for the said CQ is rdma_restrack_get(). Currently, rdma_restrack_del() is invoked at the end of ib_destroy_cq_user(), which is too late, since by that point vendor-specific resources associated with the CQ might already be freed. This can leave a short window where the CQ remains accessible through restrack, leading to a potential use-after-free.

Fix this by moving the rdma_restrack_begin_del() call to the start of ib_destroy_cq_user(), ensuring that the CQ is removed from restrack before its internal resources are released. This guarantees that no new users hold references to a CQ that is in the process of destruction.

In addition, this change preserves the intended inverted order between create and destroy routines: resources are added to restrack at the end of successful creation, and hence shall be removed from the restrack first thing during the destruction flow, which keeps the lifecycle management consistent and predictable.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-92511"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:17:53Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/core: Fix potential use after free in ib_destroy_cq_user()\n\nWhen accessing a CQ via the netlink path the only synchronization\nmechanism for the said CQ is rdma_restrack_get().\nCurrently, rdma_restrack_del() is invoked at the end of\nib_destroy_cq_user(), which is too late, since by that point\nvendor-specific resources associated with the CQ might already be\nfreed. This can leave a short window where the CQ remains accessible\nthrough restrack, leading to a potential use-after-free.\n\nFix this by moving the rdma_restrack_begin_del() call to the start of\nib_destroy_cq_user(), ensuring that the CQ is removed from restrack\nbefore its internal resources are released. This guarantees that no new\nusers hold references to a CQ that is in the process of destruction.\n\nIn addition, this change preserves the intended inverted order\nbetween create and destroy routines: resources are added to\nrestrack at the end of successful creation, and hence shall be removed\nfrom the restrack first thing during the destruction flow, which keeps\nthe lifecycle management consistent and predictable.",
  "id": "GHSA-rx24-hf7h-rf8w",
  "modified": "2026-09-17T18:32:07Z",
  "published": "2026-09-17T18:32:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-92511"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/197c262dbf94c0f7ab7ac54b66f892ce9f343232"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/253c2ed71a532c70fa0e64317ceb02bb1a50c84c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3481bec4dfc4aee24ffea5a547ee95b70b67d9d5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/42f7a0c7a94003059540cce448acabfa62ad119d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8a72a6aad84b3928dbb5e564bff1f56a7ec222ae"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b85a148731eceffacb6a030950187d785175607f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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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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Action not permitted

CVE-2026-92511 (GCVE-0-2026-92511)

FKIE_CVE-2026-92511

GHSA-RX24-HF7H-RF8W

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