CVE-2026-97613 (GCVE-0-2026-97613)
Vulnerability from cvelistv5
Published
2026-09-25 10:22
Modified
2026-10-19 09:10
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: mana: Reserve extra CQ slot for the fence completion CQE The RX completion queue is sized to hold exactly one CQE per posted RX WQE. MANA_FENCE_RQ makes hardware post an additional CQE_RX_OBJECT_FENCE after the packet CQEs. The current sizing reserves no extra slot for it and in rare cases, CQ has no guaranteed slot for the fence CQE when it is full of packet CQEs. This can lead to dropping the fence completion while the driver waits holding RTNL lock throughout the timeout duration. Reserve one extra CQE slot for CQE_RX_OBJECT_FENCE. mana_gd_alloc_memory() requires queue_size to be a power-of-two and at least MANA_PAGE_SIZE; the reservation pushes cq_size past a power-of-two, so round up the CQ size in mana_create_rxq().
References
Impacted products
Vendor Product Version
Linux Linux Version: 6cc74443a7732d7e93bee3d0c3704a22cc7274d9
Version: 6cc74443a7732d7e93bee3d0c3704a22cc7274d9
Version: 6cc74443a7732d7e93bee3d0c3704a22cc7274d9
Version: 6cc74443a7732d7e93bee3d0c3704a22cc7274d9
Version: 6cc74443a7732d7e93bee3d0c3704a22cc7274d9
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/microsoft/mana/mana_en.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "f7d76b84b9206eef4320d8ab715d65f944535acf",
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              "versionType": "git"
            },
            {
              "lessThan": "62eb52454afcc1d390b8624c5d1ddc92cf382f39",
              "status": "affected",
              "version": "6cc74443a7732d7e93bee3d0c3704a22cc7274d9",
              "versionType": "git"
            },
            {
              "lessThan": "1e43c407624d2111c19d4d8ffe9b2191a0ec42de",
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              "versionType": "git"
            },
            {
              "lessThan": "6c739cb89ebd6cf225dac46d2721e11927a7ead4",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "80dd7e754b3aa9637a0758ad93fa209f9650ec48",
              "status": "affected",
              "version": "6cc74443a7732d7e93bee3d0c3704a22cc7274d9",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/microsoft/mana/mana_en.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "lessThan": "5.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "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": "6.6.158",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.111",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.7",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "5.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: mana: Reserve extra CQ slot for the fence completion CQE\n\nThe RX completion queue is sized to hold exactly one CQE per posted RX WQE.\nMANA_FENCE_RQ makes hardware post an additional CQE_RX_OBJECT_FENCE after\nthe packet CQEs. The current sizing reserves no extra slot for it and in\nrare cases, CQ has no guaranteed slot for the fence CQE when it is full of\npacket CQEs. This can lead to dropping the fence completion while the\ndriver waits holding RTNL lock throughout the timeout duration.\nReserve one extra CQE slot for CQE_RX_OBJECT_FENCE. mana_gd_alloc_memory()\nrequires queue_size to be a power-of-two and at least MANA_PAGE_SIZE;\nthe reservation pushes cq_size past a power-of-two, so round up the CQ size\nin mana_create_rxq()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:10:17.008Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/f7d76b84b9206eef4320d8ab715d65f944535acf"
        },
        {
          "url": "https://git.kernel.org/stable/c/62eb52454afcc1d390b8624c5d1ddc92cf382f39"
        },
        {
          "url": "https://git.kernel.org/stable/c/1e43c407624d2111c19d4d8ffe9b2191a0ec42de"
        },
        {
          "url": "https://git.kernel.org/stable/c/6c739cb89ebd6cf225dac46d2721e11927a7ead4"
        },
        {
          "url": "https://git.kernel.org/stable/c/80dd7e754b3aa9637a0758ad93fa209f9650ec48"
        }
      ],
      "title": "net: mana: Reserve extra CQ slot for the fence completion CQE",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97613",
    "datePublished": "2026-09-25T10:22:22.026Z",
    "dateReserved": "2026-09-24T16:01:01.158Z",
    "dateUpdated": "2026-10-19T09:10:17.008Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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