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

Vulnerability from cvelistv5 – Published: 2026-09-04 15:12 – Updated: 2026-09-04 15:12
VLAI
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
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8eeed8373e1cca836799bf8e4a05cffa8e444908 , < 881a805a8029ba48c0ce81c6674910f8d83f7afb (git)
Affected: 8eeed8373e1cca836799bf8e4a05cffa8e444908 , < 39fc615e355b65b8d43be30da57aa95ae6eaf688 (git)
Affected: 8eeed8373e1cca836799bf8e4a05cffa8e444908 , < f3868046e8e2e761d4d943a232bd109ff22a7d5b (git)
Affected: 8eeed8373e1cca836799bf8e4a05cffa8e444908 , < ea081b4435515ac7177eb598a3c0678d1b9e7911 (git)
Affected: 8eeed8373e1cca836799bf8e4a05cffa8e444908 , < d92255b405fb6f5acca408239ccd742e0a42c9cb (git)
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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)
guessed Create a notification for this product.
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{
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        {
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          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/pensando/ionic/ionic_lif.c",
            "drivers/net/ethernet/pensando/ionic/ionic_txrx.c"
          ],
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          "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."
        }
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    "dateReserved": "2026-08-26T14:34:25.792Z",
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          }
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      "cve": "CVE-2026-80779",
      "id": "CVE-2026-80779",
      "initial_release_date": "2026-09-05T00:27:40Z",
      "product_status:known_affected": "51",
      "product_status:known_not_affected": "302",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-80779",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-80779.json",
      "version": "6"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.