CVE-2026-98131

{
  "id": "CVE-2026-98131",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-25T11:17:44.500",
  "lastModified": "2026-10-21T13:21:23.907",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: stmmac: fix dma mapping leak in stmmac_tso_xmit()\n\nIn stmmac_tso_xmit(), if the DMA mapping of an skb fragment fails, the\nframe is dropped but the DMA mappings already created for the linear\npart and for the fragments mapped before the failure are never\nunmapped, leaking DMA mappings.\n\nFix the leak by walking back over the descriptors used by the frame and\nreleasing each of them with stmmac_free_tx_buffer(). Moreover, release\nthe descriptors with stmmac_release_tx_desc() unmapping the DMA buffers."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "f748be531d7012c456b97f66091d86b3675c5fef",
              "lessThan": "c5449b635362cb678d29d8f6ab54e65734d891ce",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f748be531d7012c456b97f66091d86b3675c5fef",
              "lessThan": "8a3257f142ae513d0c96d42f97386d4941bcec29",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f748be531d7012c456b97f66091d86b3675c5fef",
              "lessThan": "e85adaac3dc6317cae902372c6849189ec62cf7d",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "f748be531d7012c456b97f66091d86b3675c5fef",
              "lessThan": "a5d946466a95621fa2769720d59ea336003aa1a5",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "drivers/net/ethernet/stmicro/stmmac/stmmac_main.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "4.7",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "4.7",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.114",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.57",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.7",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "4.7",
              "versionEndExcluding": "7.2.7",
              "matchCriteriaId": "3FD17828-FF83-49FD-8B19-7DA480FB617B"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:7.3:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "11E35E1B-5DB4-4AB9-9706-CD73B799EADF"
            }
          ]
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  ],
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/8a3257f142ae513d0c96d42f97386d4941bcec29",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a5d946466a95621fa2769720d59ea336003aa1a5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://git.kernel.org/stable/c/c5449b635362cb678d29d8f6ab54e65734d891ce",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e85adaac3dc6317cae902372c6849189ec62cf7d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ]
    }
  ]
}