CVE-2026-80779 (GCVE-0-2026-80779)
Vulnerability from cvelistv5
Published
2026-09-04 15:12
Modified
2026-10-19 08:43
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net/ionic: avoid OOB TX partner lookup for hwstamp RXQ The dedicated hardware timestamp RX queue is allocated with q->index equal to lif->ionic->nrxqs_per_lif. The normal txqcqs array only contains the regular queue pairs, so using that index to set rxq->partner can read one entry past txqcqs[] and then write through the derived pointer. Only link RX/TX partners for normal queue-pair indexes. Leave the hwstamp RX queue unpaired, and make the XDP_TX path abort cleanly if an RX queue has no TX partner.
References
Impacted products
Vendor Product Version
Linux Linux Version: 8eeed8373e1cca836799bf8e4a05cffa8e444908
Version: 8eeed8373e1cca836799bf8e4a05cffa8e444908
Version: 8eeed8373e1cca836799bf8e4a05cffa8e444908
Version: 8eeed8373e1cca836799bf8e4a05cffa8e444908
Version: 8eeed8373e1cca836799bf8e4a05cffa8e444908
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/pensando/ionic/ionic_lif.c",
            "drivers/net/ethernet/pensando/ionic/ionic_txrx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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          "versions": [
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        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/pensando/ionic/ionic_lif.c",
            "drivers/net/ethernet/pensando/ionic/ionic_txrx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
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              "status": "unaffected",
              "version": "0",
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.18.47",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "7.1.11",
              "versionType": "semver"
            },
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              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.1",
              "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": "6.12.106",
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                },
                {
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                },
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              ],
              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/ionic: avoid OOB TX partner lookup for hwstamp RXQ\n\nThe dedicated hardware timestamp RX queue is allocated with q-\u003eindex\nequal to lif-\u003eionic-\u003enrxqs_per_lif. The normal txqcqs array only\ncontains the regular queue pairs, so using that index to set rxq-\u003epartner\ncan read one entry past txqcqs[] and then write through the derived\npointer.\nOnly link RX/TX partners for normal queue-pair indexes. Leave the hwstamp\nRX queue unpaired, and make the XDP_TX path abort cleanly if an RX queue\nhas no TX partner."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:43:34.624Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/881a805a8029ba48c0ce81c6674910f8d83f7afb"
        },
        {
          "url": "https://git.kernel.org/stable/c/39fc615e355b65b8d43be30da57aa95ae6eaf688"
        },
        {
          "url": "https://git.kernel.org/stable/c/f3868046e8e2e761d4d943a232bd109ff22a7d5b"
        },
        {
          "url": "https://git.kernel.org/stable/c/ea081b4435515ac7177eb598a3c0678d1b9e7911"
        },
        {
          "url": "https://git.kernel.org/stable/c/d92255b405fb6f5acca408239ccd742e0a42c9cb"
        }
      ],
      "title": "net/ionic: avoid OOB TX partner lookup for hwstamp RXQ",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80779",
    "datePublished": "2026-09-04T15:12:51.103Z",
    "dateReserved": "2026-08-26T14:34:25.792Z",
    "dateUpdated": "2026-10-19T08:43:34.624Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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