CVE-2026-97981 (GCVE-0-2026-97981)
Vulnerability from cvelistv5
Published
2026-09-25 10:23
Modified
2026-10-19 09:11
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: cortina: Count dropped frames as NAPI work The RX loop only consumes budget when it successfully delivers a frame. Error paths keep consuming descriptors without reducing the budget, so a stream of bad frames can process the entire receive ring in one poll. Move the budget accounting to a common end-of-frame path. This counts each completed frame as NAPI work whether it was delivered or dropped, matching the behavior of the vendor driver.
References
Impacted products
Vendor Product Version
Linux Linux Version: 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88
Version: 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88
Version: 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88
Version: 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88
Version: 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88
Version: 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88
Version: 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88
Version: 4d5ae32f5e1e13f7f36d6439ec3257993b9f5b88
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/cortina/gemini.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          "product": "Linux",
          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.16"
            },
            {
              "lessThan": "4.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "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",
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            {
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              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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                  "vulnerable": true
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                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: ethernet: cortina: Count dropped frames as NAPI work\n\nThe RX loop only consumes budget when it successfully delivers a frame.\nError paths keep consuming descriptors without reducing the budget, so a\nstream of bad frames can process the entire receive ring in one poll.\n\nMove the budget accounting to a common end-of-frame path. This counts\neach completed frame as NAPI work whether it was delivered or dropped,\nmatching the behavior of the vendor driver."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:11:48.414Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/620b7184808b25cf58268856f892b9ba83c181fd"
        },
        {
          "url": "https://git.kernel.org/stable/c/9620e2ce9b5998ebbf157241f296f8ddb92285c2"
        },
        {
          "url": "https://git.kernel.org/stable/c/27b5753077d1cfda5fe201d2ba602de76a9a09b1"
        },
        {
          "url": "https://git.kernel.org/stable/c/e858b9b1ea3cbbc353189d07dec40dc16967e290"
        },
        {
          "url": "https://git.kernel.org/stable/c/58140f1cebb776d174dc6ff41c15401654a5b1ea"
        },
        {
          "url": "https://git.kernel.org/stable/c/cceb6cd7f0e5ed2944a9ca22443d7b9da82f60ab"
        },
        {
          "url": "https://git.kernel.org/stable/c/5754e0c0758805096ecfeaf4c1b146ad51ed246f"
        },
        {
          "url": "https://git.kernel.org/stable/c/b856c552f556bc0341c1dbe0bf88e630fd1dc4b7"
        }
      ],
      "title": "net: ethernet: cortina: Count dropped frames as NAPI work",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-97981",
    "datePublished": "2026-09-25T10:23:17.703Z",
    "dateReserved": "2026-09-25T10:18:58.208Z",
    "dateUpdated": "2026-10-19T09:11:48.414Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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