CVE-2026-80880 (GCVE-0-2026-80880)
Vulnerability from cvelistv5
Published
2026-09-04 16:49
Modified
2026-09-04 16:49
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: IB/mlx5: Properly support implicit ODP rereg_mr Due to all the child mkeys in the implicit ODP configuration we cannot change anything in place for the parent mkey. Instead the whole thing needs to be rebuilt if any change is requested. If the user does not specify a translation then force the implicit values which will then fall through the logic into mlx5_ib_reg_user_mr() to allocate a completely new MR. Since implicit children were also touching the mr->pd, this removes another case where the access was racy.
References
Impacted products
Vendor Product Version
Linux Linux Version: ef3642c4f54d3493c92c71faf46139b2473bc532
Version: ef3642c4f54d3493c92c71faf46139b2473bc532
Version: ef3642c4f54d3493c92c71faf46139b2473bc532
Version: ef3642c4f54d3493c92c71faf46139b2473bc532
Version: ef3642c4f54d3493c92c71faf46139b2473bc532
Version: ef3642c4f54d3493c92c71faf46139b2473bc532
Version: ef3642c4f54d3493c92c71faf46139b2473bc532
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{
  "containers": {
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/infiniband/hw/mlx5/mr.c"
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          "versions": [
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              "version": "7.2",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nIB/mlx5: Properly support implicit ODP rereg_mr\n\nDue to all the child mkeys in the implicit ODP configuration we cannot\nchange anything in place for the parent mkey. Instead the whole thing\nneeds to be rebuilt if any change is requested. If the user does not\nspecify a translation then force the implicit values which will then fall\nthrough the logic into mlx5_ib_reg_user_mr() to allocate a completely new\nMR.\n\nSince implicit children were also touching the mr-\u003epd, this removes\nanother case where the access was racy."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-04T16:49:05.562Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cbc9982c8573fb9e35040063aa78c8ebe768a1ff"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee914ef54a7e707453ecb43eb30fb0a5c6dd0d69"
        },
        {
          "url": "https://git.kernel.org/stable/c/94f7e50eb6b2ce7fbd9aeac1db22460d2013a3fb"
        },
        {
          "url": "https://git.kernel.org/stable/c/eb7cb798e563b3f3b3baeb9cc6f7455764267e50"
        },
        {
          "url": "https://git.kernel.org/stable/c/d4f84bfa089fe71f775d25beb29303e844494c25"
        },
        {
          "url": "https://git.kernel.org/stable/c/5d02b9a2efd11d28d2a8feac7769686b1b871d9c"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee7a8335069150c3f1893a697ab30bbeca00d796"
        }
      ],
      "title": "IB/mlx5: Properly support implicit ODP rereg_mr",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80880",
    "datePublished": "2026-09-04T16:49:05.562Z",
    "dateReserved": "2026-08-26T14:34:25.799Z",
    "dateUpdated": "2026-09-04T16:49:05.562Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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