CVE-2026-23122 (GCVE-0-2026-23122)
Vulnerability from cvelistv5
Published
2026-02-14 15:09
Modified
2026-05-11 22:00
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: igc: Reduce TSN TX packet buffer from 7KB to 5KB per queue The previous 7 KB per queue caused TX unit hangs under heavy timestamping load. Reducing to 5 KB avoids these hangs and matches the TSN recommendation in I225/I226 SW User Manual Section 7.5.4. The 8 KB "freed" by this change is currently unused. This reduction is not expected to impact throughput, as the i226 is PCIe-limited for small TSN packets rather than TX-buffer-limited.
References
Impacted products
Vendor Product Version
Linux Linux Version: 0d58cdc902dace2298406b3972def04f55e3d775
Version: 0d58cdc902dace2298406b3972def04f55e3d775
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/igc/igc_defines.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "88037973c8ef6032bf84e9955595f8b20bc14c21",
              "status": "affected",
              "version": "0d58cdc902dace2298406b3972def04f55e3d775",
              "versionType": "git"
            },
            {
              "lessThan": "8ad1b6c1e63d25f5465b7a8aa403bdcee84b86f9",
              "status": "affected",
              "version": "0d58cdc902dace2298406b3972def04f55e3d775",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/intel/igc/igc_defines.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.16"
            },
            {
              "lessThan": "6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.8",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19",
                  "versionStartIncluding": "6.16",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nigc: Reduce TSN TX packet buffer from 7KB to 5KB per queue\n\nThe previous 7 KB per queue caused TX unit hangs under heavy\ntimestamping load. Reducing to 5 KB avoids these hangs and matches\nthe TSN recommendation in I225/I226 SW User Manual Section 7.5.4.\n\nThe 8 KB \"freed\" by this change is currently unused. This reduction\nis not expected to impact throughput, as the i226 is PCIe-limited\nfor small TSN packets rather than TX-buffer-limited."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:00:33.309Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/88037973c8ef6032bf84e9955595f8b20bc14c21"
        },
        {
          "url": "https://git.kernel.org/stable/c/8ad1b6c1e63d25f5465b7a8aa403bdcee84b86f9"
        }
      ],
      "title": "igc: Reduce TSN TX packet buffer from 7KB to 5KB per queue",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-23122",
    "datePublished": "2026-02-14T15:09:52.592Z",
    "dateReserved": "2026-01-13T15:37:45.970Z",
    "dateUpdated": "2026-05-11T22:00:33.309Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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