CVE-2026-80609 (GCVE-0-2026-80609)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:48 – Updated: 2026-08-29 06:21
VLAI
Title
qede: fix out-of-bounds check for cqe->len_list[]
Summary
In the Linux kernel, the following vulnerability has been resolved: qede: fix out-of-bounds check for cqe->len_list[] Move index check before element access.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ecbb12caf399d7cf364b7553ed5aebeaa2f255bc , < 6d203bdd227fca1787f8a80cf84b990936633c5a (git)
Affected: a778912b4a53587ea07d85526d152f85d109cbfe , < bd3a6a083b408e96437dbd86ff543ba9ec3a788b (git)
Affected: f0923011c1261b33a2ac1de349256d39cb750dd0 , < e30af53dca803893a29eb3bbe0539752ba435410 (git)
Affected: 917a9d02182ac8b4f25eb47dc02f3ec679608c24 , < 1aacefd074b5dcc99b8dbcd73e1c963ed5010110 (git)
Affected: 896f1a2493b59beb2b5ccdf990503dbb16cb2256 , < b17751a2ebc4aef3ce6be6f71ee8df92bf5ddfcd (git)
Affected: 896f1a2493b59beb2b5ccdf990503dbb16cb2256 , < 6d46ab395803f162cdc50e8d346e5f1a4e766771 (git)
Affected: 896f1a2493b59beb2b5ccdf990503dbb16cb2256 , < f9ba47fce5932c15891c89c60e76dfaca919cb8d (git)
Affected: e441db07f208184e0466abf44b389a81d70c340e (git)
Affected: 5.15.197 , < 5.15.212 (semver)
Affected: 6.1.159 , < 6.1.178 (semver)
Affected: 6.6.118 , < 6.6.145 (semver)
Affected: 6.12.60 , < 6.12.97 (semver)
Affected: 6.17.10 , < 6.18 (semver)
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Linux Linux Affected: 6.18
Unaffected: 0 , < 6.18 (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
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            "drivers/net/ethernet/qlogic/qede/qede_fp.c"
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              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
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      "cpeApplicability": [
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                  "versionEndExcluding": "5.15.212",
                  "versionStartIncluding": "5.15.197",
                  "vulnerable": true
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                  "versionStartIncluding": "6.1.159",
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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\nqede: fix out-of-bounds check for cqe-\u003elen_list[]\n\nMove index check before element access."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:N - The bug is in qede TPA completion handling on the NAPI RX fastpath; remote TCP traffic to a Marvell/QLogic FastLinQ NIC causes firmware to post TPA CQEs that are parsed in qede_poll()-\u003eqede_rx_int()-\u003eqede_rx_process_tpa_cqe()-\u003eqede_tpa_cont()/qede_tpa_end().\nAC:L - An attacker can repeatedly send high-rate crafted TCP bursts to maximize TPA aggregation BD counts so all len_list[] slots are non-zero, deterministically hitting the misordered bounds check without races, special memory layout, or victim-specific state.\nPR:N - Only the ability to send Ethernet/TCP packets to a listening host with a qede interface is required; RX and TPA CQE processing occur in softirq before any authentication, capability checks, or local account access.\nUI:N - No victim action is needed beyond normal network operation; packet reception, interrupt handling, and NAPI polling automatically process attacker-supplied frames and completion descriptors.\nS:U - The out-of-bounds read and resulting skb/RX-ring corruption stay within the host kernel security boundary and do not cross VM, container, IOMMU, or sandbox isolation by themselves.\nC:H - The loop reads past len_list[] into adjacent completion-descriptor memory before the bound check, and the same malformed CQE drives qede_fill_frag_skb() with attacker-influenced lengths that can leak uninitialized RX-ring/page data up the network stack.\nI:H - Extra qede_fill_frag_skb() iterations advance frag_id without MAX_SKB_FRAGS limits and consume RX BDs using firmware-supplied lengths, enabling controllable skb shared-info and RX-ring corruption exploitable for arbitrary kernel writes.\nA:H - Corrupted skb fragment metadata and desynchronized RX BD consumption reliably trigger kernel oops/panic or wedged RX processing in softirq, and the condition is remotely repeatable for sustained denial of service."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-29T06:21:19.318Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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          "url": "https://git.kernel.org/stable/c/6d203bdd227fca1787f8a80cf84b990936633c5a"
        },
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          "url": "https://git.kernel.org/stable/c/bd3a6a083b408e96437dbd86ff543ba9ec3a788b"
        },
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          "url": "https://git.kernel.org/stable/c/e30af53dca803893a29eb3bbe0539752ba435410"
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        {
          "url": "https://git.kernel.org/stable/c/f9ba47fce5932c15891c89c60e76dfaca919cb8d"
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      ],
      "title": "qede: fix out-of-bounds check for cqe-\u003elen_list[]",
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    "datePublished": "2026-08-28T06:48:32.751Z",
    "dateReserved": "2026-08-26T14:34:25.773Z",
    "dateUpdated": "2026-08-29T06:21:19.318Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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      "cve": "CVE-2026-80609",
      "date": "2026-09-01",
      "epss": "0.00509",
      "percentile": "0.41408"
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-31T16:11:30+00:00",
      "cve": "CVE-2026-80609",
      "id": "CVE-2026-80609",
      "initial_release_date": "2026-08-28T00:00:00+00:00",
      "product_status:known_affected": "124",
      "product_status:known_not_affected": "150",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: qede: fix out-of-bounds check for cqe-\u003elen_list[]",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80609.json",
      "version": "3"
    }
  }
}



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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

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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.