CVE-2026-98618 (GCVE-0-2026-98618)

Vulnerability from cvelistv5 – Published: 2026-10-18 15:19 – Updated: 2026-10-19 09:22
VLAI
Title
eth: fbnic: Handle maximum standalone channels
Summary
In the Linux kernel, the following vulnerability has been resolved: eth: fbnic: Handle maximum standalone channels Standalone channels use one NAPI vector for each Tx and Rx queue. fbnic's allocation path excludes FBNIC_MAX_TXQS from that layout. A 64-Tx/64-Rx configuration therefore records 128 vectors but allocates only 64, leaving NULL entries that resource setup dereferences. Include the maximum vector count in standalone allocation.
Severity
No CVSS data available.
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6820 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: bc6107771bb4be3009168cfda24d22131c026fe8 , < 9843e5fabd6ab296df9c025b1d0e5bf79a6b8a08 (git)
Affected: bc6107771bb4be3009168cfda24d22131c026fe8 , < 6c903188b67617070017305a325fa326f270a43d (git)
Affected: bc6107771bb4be3009168cfda24d22131c026fe8 , < 16ff1023213cc39c1a7ce737205c2a1a53c3a716 (git)
Affected: bc6107771bb4be3009168cfda24d22131c026fe8 , < 1f4c73064a50f53d596c6f1d06d2d700f43c4b32 (git)
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Linux Linux Affected: 6.11
Unaffected: 0 , < 6.11 (semver)
Unaffected: 6.12.112 , ≤ 6.12.* (semver)
Unaffected: 6.18.55 , ≤ 6.18.* (semver)
Unaffected: 7.2.9 , ≤ 7.2.* (semver)
Unaffected: 7.3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/meta/fbnic/fbnic_txrx.c"
          ],
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          "vendor": "Linux",
          "versions": [
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          ],
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            }
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      ],
      "cpeApplicability": [
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                },
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                  "versionStartIncluding": "6.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\neth: fbnic: Handle maximum standalone channels\n\nStandalone channels use one NAPI vector for each Tx and Rx queue.\nfbnic\u0027s allocation path excludes FBNIC_MAX_TXQS from that layout. A\n64-Tx/64-Rx configuration therefore records 128 vectors but allocates\nonly 64, leaving NULL entries that resource setup dereferences.\n\nInclude the maximum vector count in standalone allocation."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:22:46.174Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/9843e5fabd6ab296df9c025b1d0e5bf79a6b8a08"
        },
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          "url": "https://git.kernel.org/stable/c/6c903188b67617070017305a325fa326f270a43d"
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          "url": "https://git.kernel.org/stable/c/16ff1023213cc39c1a7ce737205c2a1a53c3a716"
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      "title": "eth: fbnic: Handle maximum standalone channels",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98618",
    "datePublished": "2026-10-18T15:19:38.631Z",
    "dateReserved": "2026-09-25T10:25:14.360Z",
    "dateUpdated": "2026-10-19T09:22:46.174Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
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      "date": "2026-11-02",
      "epss": "0.002",
      "percentile": "0.09882"
    },
    "microsoft_vex": {
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      "cve": "CVE-2026-98618",
      "id": "msrc_CVE-2026-98618",
      "initial_release_date": "2026-10-20T22:24:33.000Z",
      "product_status:under_investigation": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "eth: fbnic: Handle maximum standalone channels",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-98618.json",
      "version": "2"
    },
    "nvd": {
      "cve": {
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          {
            "affectedData": [
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                "programFiles": [
                  "drivers/net/ethernet/meta/fbnic/fbnic_txrx.c"
                ],
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                ],
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        "cveTags": [],
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          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\neth: fbnic: Handle maximum standalone channels\n\nStandalone channels use one NAPI vector for each Tx and Rx queue.\nfbnic\u0027s allocation path excludes FBNIC_MAX_TXQS from that layout. A\n64-Tx/64-Rx configuration therefore records 128 vectors but allocates\nonly 64, leaving NULL entries that resource setup dereferences.\n\nInclude the maximum vector count in standalone allocation."
          }
        ],
        "id": "CVE-2026-98618",
        "lastModified": "2026-10-19T10:19:25.863",
        "metrics": {},
        "published": "2026-10-18T16:17:14.690",
        "references": [
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: eth: fbnic: Handle maximum standalone channels",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-98618.json",
      "version": "3"
    }
  }
}



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