Vulnerability-Lookup

GHSA-5565-RHHW-MPQW

Vulnerability from github – Published: 2026-09-04 18:31 – Updated: 2026-09-04 18:31

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-80779"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-04T16:18:03Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-5565-rhhw-mpqw",
  "modified": "2026-09-04T18:31:25Z",
  "published": "2026-09-04T18:31:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80779"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39fc615e355b65b8d43be30da57aa95ae6eaf688"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/881a805a8029ba48c0ce81c6674910f8d83f7afb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d92255b405fb6f5acca408239ccd742e0a42c9cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ea081b4435515ac7177eb598a3c0678d1b9e7911"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f3868046e8e2e761d4d943a232bd109ff22a7d5b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-80779 (GCVE-0-2026-80779)

Vulnerability from cvelistv5 – Published: 2026-09-04 15:12 – Updated: 2026-09-04 15:12

Title

net/ionic: avoid OOB TX partner lookup for hwstamp RXQ

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.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/881a805a8029ba48c…
https://git.kernel.org/stable/c/39fc615e355b65b8d…
https://git.kernel.org/stable/c/f3868046e8e2e761d…
https://git.kernel.org/stable/c/ea081b4435515ac71…
https://git.kernel.org/stable/c/d92255b405fb6f5ac…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 8eeed8373e1cca836799bf8e4a05cffa8e444908 , < 881a805a8029ba48c0ce81c6674910f8d83f7afb (git) Affected: 8eeed8373e1cca836799bf8e4a05cffa8e444908 , < 39fc615e355b65b8d43be30da57aa95ae6eaf688 (git) Affected: 8eeed8373e1cca836799bf8e4a05cffa8e444908 , < f3868046e8e2e761d4d943a232bd109ff22a7d5b (git) Affected: 8eeed8373e1cca836799bf8e4a05cffa8e444908 , < ea081b4435515ac7177eb598a3c0678d1b9e7911 (git) Affected: 8eeed8373e1cca836799bf8e4a05cffa8e444908 , < d92255b405fb6f5acca408239ccd742e0a42c9cb (git)
Linux	Linux	Affected: 6.9 Unaffected: 0 , < 6.9 (semver) Unaffected: 6.12.106 , ≤ 6.12.* (semver) Unaffected: 6.18.47 , ≤ 6.18.* (semver) Unaffected: 7.1.11 , ≤ 7.1.* (semver) Unaffected: 7.2.1 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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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",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
            },
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              "versionType": "git"
            },
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              "status": "affected",
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              "versionType": "git"
            }
          ]
        },
        {
          "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"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.106",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.47",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.106",
                  "versionStartIncluding": "6.9",
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                },
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                },
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      "descriptions": [
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          "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": "2026-09-04T15:12:51.103Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
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        },
        {
          "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",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80779",
    "datePublished": "2026-09-04T15:12:51.103Z",
    "dateReserved": "2026-08-26T14:34:25.792Z",
    "dateUpdated": "2026-09-04T15:12:51.103Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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