CVE-2026-46188 (GCVE-0-2026-46188)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:36 – Updated: 2026-05-28 09:36
VLAI
Title
octeon_ep_vf: add NULL check for napi_build_skb()
Summary
In the Linux kernel, the following vulnerability has been resolved: octeon_ep_vf: add NULL check for napi_build_skb() napi_build_skb() can return NULL on allocation failure. In __octep_vf_oq_process_rx(), the result is used directly without a NULL check in both the single-buffer and multi-fragment paths, leading to a NULL pointer dereference. Add NULL checks after both napi_build_skb() calls, properly advancing descriptors and consuming remaining fragments on failure.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 , < 60246cdd4c515ea7d920cddf48932efcb990773e (git)
Affected: 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 , < b0f4711b426a06fb4c4be85c36b9f5588d5140d3 (git)
Affected: 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 , < 6fef6640bbf360e254cc0174365ed30ce3a07572 (git)
Affected: 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 , < dd66b42854705e4e4ee7f14d260f86c578bed3e3 (git)
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Linux Linux Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 6.12.88 , ≤ 6.12.* (semver)
Unaffected: 6.18.30 , ≤ 6.18.* (semver)
Unaffected: 7.0.7 , ≤ 7.0.* (semver)
Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_rx.c"
          ],
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            }
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              "operator": "OR"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocteon_ep_vf: add NULL check for napi_build_skb()\n\nnapi_build_skb() can return NULL on allocation failure. In\n__octep_vf_oq_process_rx(), the result is used directly without a NULL\ncheck in both the single-buffer and multi-fragment paths, leading to a\nNULL pointer dereference.\n\nAdd NULL checks after both napi_build_skb() calls, properly advancing\ndescriptors and consuming remaining fragments on failure."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-05-28T09:36:42.251Z",
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        "shortName": "Linux"
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    "cveId": "CVE-2026-46188",
    "datePublished": "2026-05-28T09:36:42.251Z",
    "dateReserved": "2026-05-13T15:03:33.104Z",
    "dateUpdated": "2026-05-28T09:36:42.251Z",
    "state": "PUBLISHED"
  },
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  "vulnerability-lookup:meta": {
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      "date": "2026-05-29",
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  }
}


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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.