CVE-2026-90415 (GCVE-0-2026-90415)
Vulnerability from cvelistv5
Published
2026-09-17 16:09
Modified
2026-10-19 09:03
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/cxgb4: free STAG index when TPT entry write fails write_tpt_entry() allocates a new STAG index with c4iw_get_resource() and bumps stats.stag.cur before programming the entry. When write_adapter_mem() fails, it returns the error without releasing the index or reversing the statistic. No MR is inserted into rhp->mrs, so deregistration never reclaims it, leaking the index until device teardown. Record whether this call allocated the index and, on a failed write, return it to tpt_table and decrement stats.stag.cur. Key the rollback on both the write error and that flag, not the error alone: a non-reset update carries a caller-owned STAG that this call did not allocate and must not free.
References
Impacted products
Vendor Product Version
Linux Linux Version: ec3eead217181d7360a11317a888ceb30807867c
Version: ec3eead217181d7360a11317a888ceb30807867c
Version: ec3eead217181d7360a11317a888ceb30807867c
Version: ec3eead217181d7360a11317a888ceb30807867c
Version: ec3eead217181d7360a11317a888ceb30807867c
Version: ec3eead217181d7360a11317a888ceb30807867c
Version: ec3eead217181d7360a11317a888ceb30807867c
Version: ec3eead217181d7360a11317a888ceb30807867c
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/cxgb4/mem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5fe4731bfbd8d83c4a14b4af3a27329969ce8a99",
              "status": "affected",
              "version": "ec3eead217181d7360a11317a888ceb30807867c",
              "versionType": "git"
            },
            {
              "lessThan": "8f6976d635d190e3d7af7103daaa581cf1ccc12e",
              "status": "affected",
              "version": "ec3eead217181d7360a11317a888ceb30807867c",
              "versionType": "git"
            },
            {
              "lessThan": "9eeafcda1d6c11f0eec532243c4e96ec8c632bd7",
              "status": "affected",
              "version": "ec3eead217181d7360a11317a888ceb30807867c",
              "versionType": "git"
            },
            {
              "lessThan": "5a21e5114cec4cd3f8a2843d4c46bc49634d6e96",
              "status": "affected",
              "version": "ec3eead217181d7360a11317a888ceb30807867c",
              "versionType": "git"
            },
            {
              "lessThan": "2f17ca7ab5269ac2504e1039c3921373dccd7712",
              "status": "affected",
              "version": "ec3eead217181d7360a11317a888ceb30807867c",
              "versionType": "git"
            },
            {
              "lessThan": "a2e37d1ab773be3cd26b1c19593ca2dbcece9c57",
              "status": "affected",
              "version": "ec3eead217181d7360a11317a888ceb30807867c",
              "versionType": "git"
            },
            {
              "lessThan": "a64e2beb450179a5d43034af8d5476a11eac1486",
              "status": "affected",
              "version": "ec3eead217181d7360a11317a888ceb30807867c",
              "versionType": "git"
            },
            {
              "lessThan": "fdfb5cea4bf070cdb31d997efd87bb684df041fd",
              "status": "affected",
              "version": "ec3eead217181d7360a11317a888ceb30807867c",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/cxgb4/mem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.5"
            },
            {
              "lessThan": "3.5",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "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",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.270",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.221",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "3.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/cxgb4: free STAG index when TPT entry write fails\n\nwrite_tpt_entry() allocates a new STAG index with c4iw_get_resource() and\nbumps stats.stag.cur before programming the entry.  When\nwrite_adapter_mem() fails, it returns the error without releasing the index\nor reversing the statistic.  No MR is inserted into rhp-\u003emrs, so\nderegistration never reclaims it, leaking the index until device teardown.\n\nRecord whether this call allocated the index and, on a failed write, return\nit to tpt_table and decrement stats.stag.cur.  Key the rollback on both the\nwrite error and that flag, not the error alone: a non-reset update carries\na caller-owned STAG that this call did not allocate and must not free."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:03:19.452Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/5fe4731bfbd8d83c4a14b4af3a27329969ce8a99"
        },
        {
          "url": "https://git.kernel.org/stable/c/8f6976d635d190e3d7af7103daaa581cf1ccc12e"
        },
        {
          "url": "https://git.kernel.org/stable/c/9eeafcda1d6c11f0eec532243c4e96ec8c632bd7"
        },
        {
          "url": "https://git.kernel.org/stable/c/5a21e5114cec4cd3f8a2843d4c46bc49634d6e96"
        },
        {
          "url": "https://git.kernel.org/stable/c/2f17ca7ab5269ac2504e1039c3921373dccd7712"
        },
        {
          "url": "https://git.kernel.org/stable/c/a2e37d1ab773be3cd26b1c19593ca2dbcece9c57"
        },
        {
          "url": "https://git.kernel.org/stable/c/a64e2beb450179a5d43034af8d5476a11eac1486"
        },
        {
          "url": "https://git.kernel.org/stable/c/fdfb5cea4bf070cdb31d997efd87bb684df041fd"
        }
      ],
      "title": "RDMA/cxgb4: free STAG index when TPT entry write fails",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90415",
    "datePublished": "2026-09-17T16:09:40.714Z",
    "dateReserved": "2026-09-11T19:38:34.813Z",
    "dateUpdated": "2026-10-19T09:03:19.452Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.