CVE-2026-93103 (GCVE-0-2026-93103)
Vulnerability from cvelistv5
Published
2026-09-17 16:11
Modified
2026-10-19 09:05
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: RDMA/hfi1: Preserve unit 0 on allocation failure hfi1_free_devdata() assumes that the device was inserted into the unit table and unconditionally erases dd->unit. If xa_alloc_irq() fails, the zero-initialized unit remains zero, so full cleanup can remove an unrelated device from index 0. Release only the rdmavt allocation and return immediately while the unit table has not acquired the device.
References
Impacted products
Vendor Product Version
Linux Linux Version: 03b92789e5cfdac66805c1a98f1ec67336199d56
Version: 03b92789e5cfdac66805c1a98f1ec67336199d56
Version: 03b92789e5cfdac66805c1a98f1ec67336199d56
Version: 03b92789e5cfdac66805c1a98f1ec67336199d56
Version: 03b92789e5cfdac66805c1a98f1ec67336199d56
Version: 03b92789e5cfdac66805c1a98f1ec67336199d56
Version: 03b92789e5cfdac66805c1a98f1ec67336199d56
Version: 03b92789e5cfdac66805c1a98f1ec67336199d56
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/hfi1/init.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.2"
            },
            {
              "lessThan": "5.2",
              "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"
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            {
              "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": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.270",
                  "versionStartIncluding": "5.2",
                  "vulnerable": true
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                {
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                {
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/hfi1: Preserve unit 0 on allocation failure\n\nhfi1_free_devdata() assumes that the device was inserted into the unit\ntable and unconditionally erases dd-\u003eunit. If xa_alloc_irq() fails, the\nzero-initialized unit remains zero, so full cleanup can remove an\nunrelated device from index 0.\n\nRelease only the rdmavt allocation and return immediately while the unit\ntable has not acquired the device."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:05:36.156Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/852637d3ee56aed8ea3ee8948eda21eca406c051"
        },
        {
          "url": "https://git.kernel.org/stable/c/3d0e5252b8d0345ef494763ca31e3ddd666e02cb"
        },
        {
          "url": "https://git.kernel.org/stable/c/0feb29d434e6cc0ebefec4f77be014c85ad751b0"
        },
        {
          "url": "https://git.kernel.org/stable/c/3f1e196eb66b8cd3882e373794d6cea46f150a20"
        },
        {
          "url": "https://git.kernel.org/stable/c/4ff9d58d34758e9633078b37e8d5289b513ff80e"
        },
        {
          "url": "https://git.kernel.org/stable/c/fd4d3ad5f244a867166d1e2da7ece3d82878ec81"
        },
        {
          "url": "https://git.kernel.org/stable/c/4204f5c0312ba136181a6e148ffa0bfaf95a4cc1"
        },
        {
          "url": "https://git.kernel.org/stable/c/2e3809ad8911f5d5581b3f046bd628417bface76"
        }
      ],
      "title": "RDMA/hfi1: Preserve unit 0 on allocation failure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93103",
    "datePublished": "2026-09-17T16:11:15.105Z",
    "dateReserved": "2026-09-17T16:02:15.085Z",
    "dateUpdated": "2026-10-19T09:05:36.156Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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