CVE-2026-31621 (GCVE-0-2026-31621)
Vulnerability from cvelistv5
Published
2026-04-24 14:42
Modified
2026-04-27 11:01
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: bnge: return after auxiliary_device_uninit() in error path When auxiliary_device_add() fails, the error block calls auxiliary_device_uninit() but does not return. The uninit drops the last reference and synchronously runs bnge_aux_dev_release(), which sets bd->auxr_dev = NULL and frees the underlying object. The subsequent bd->auxr_dev->net = bd->netdev then dereferences NULL, which is not a good thing to have happen when trying to clean up from an error. Add the missing return, as the auxiliary bus documentation states is a requirement (seems that LLM tools read documentation better than humans do...)
References
Impacted products
Vendor Product Version
Linux Linux Version: 8ac050ec3b1c0dcb5e89cf86fe2ebe0afcc73554
Version: 8ac050ec3b1c0dcb5e89cf86fe2ebe0afcc73554
Version: 8ac050ec3b1c0dcb5e89cf86fe2ebe0afcc73554
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/broadcom/bnge/bnge_auxr.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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          "product": "Linux",
          "programFiles": [
            "drivers/net/ethernet/broadcom/bnge/bnge_auxr.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc1",
              "versionType": "original_commit_for_fix"
            }
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        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.19.14",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.1",
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                  "vulnerable": true
                },
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                  "versionEndExcluding": "7.1-rc1",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbnge: return after auxiliary_device_uninit() in error path\n\nWhen auxiliary_device_add() fails, the error block calls\nauxiliary_device_uninit() but does not return.  The uninit drops the\nlast reference and synchronously runs bnge_aux_dev_release(), which sets\nbd-\u003eauxr_dev = NULL and frees the underlying object.  The subsequent\nbd-\u003eauxr_dev-\u003enet = bd-\u003enetdev then dereferences NULL, which is not a\ngood thing to have happen when trying to clean up from an error.\n\nAdd the missing return, as the auxiliary bus documentation states is a\nrequirement (seems that LLM tools read documentation better than humans\ndo...)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-27T11:01:28.803Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/38c383ec6d37f4b5597f8e6a1f5c2ab31ea01d3a"
        },
        {
          "url": "https://git.kernel.org/stable/c/87bc3557c708110d83086bf091328271298a44e3"
        },
        {
          "url": "https://git.kernel.org/stable/c/8b0c25528cb64f71a73b5c0d49cbbcb68540a4ce"
        }
      ],
      "title": "bnge: return after auxiliary_device_uninit() in error path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-31621",
    "datePublished": "2026-04-24T14:42:39.274Z",
    "dateReserved": "2026-03-09T15:48:24.123Z",
    "dateUpdated": "2026-04-27T11:01:28.803Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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