Vulnerability-Lookup

GHSA-JQMP-H258-VVV4

Vulnerability from github – Published: 2026-05-28 12:30 – Updated: 2026-05-28 12:30

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46188"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-28T10:16:34Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-jqmp-h258-vvv4",
  "modified": "2026-05-28T12:30:32Z",
  "published": "2026-05-28T12:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46188"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60246cdd4c515ea7d920cddf48932efcb990773e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fef6640bbf360e254cc0174365ed30ce3a07572"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b0f4711b426a06fb4c4be85c36b9f5588d5140d3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd66b42854705e4e4ee7f14d260f86c578bed3e3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2026-05-28 09:36 – Updated: 2026-05-28 09:36

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

Linux

References

4 references

URL	Tags
https://git.kernel.org/stable/c/60246cdd4c515ea7d…
https://git.kernel.org/stable/c/b0f4711b426a06fb4…
https://git.kernel.org/stable/c/6fef6640bbf360e25…
https://git.kernel.org/stable/c/dd66b42854705e4e4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 , < 60246cdd4c515ea7d920cddf48932efcb990773e (git) Affected: 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 , < b0f4711b426a06fb4c4be85c36b9f5588d5140d3 (git) Affected: 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 , < 6fef6640bbf360e254cc0174365ed30ce3a07572 (git) Affected: 1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1 , < dd66b42854705e4e4ee7f14d260f86c578bed3e3 (git)
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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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_rx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "60246cdd4c515ea7d920cddf48932efcb990773e",
              "status": "affected",
              "version": "1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1",
              "versionType": "git"
            },
            {
              "lessThan": "b0f4711b426a06fb4c4be85c36b9f5588d5140d3",
              "status": "affected",
              "version": "1cd3b407977c3ab1d2ddc26cb7113e7fb1509cd1",
              "versionType": "git"
            },
            {
              "lessThan": "6fef6640bbf360e254cc0174365ed30ce3a07572",
              "status": "affected",
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            },
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/marvell/octeon_ep_vf/octep_vf_rx.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": "6.12.88",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.88",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
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              "operator": "OR"
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      "descriptions": [
        {
          "lang": "en",
          "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",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "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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  "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.

Action not permitted

GHSA-JQMP-H258-VVV4

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

Tags

Sightings

Nomenclature