CVE-2026-98495 (GCVE-0-2026-98495)
Vulnerability from cvelistv5
Published
2026-10-18 15:16
Modified
2026-10-19 09:20
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: arp: terminate device name before lookup The ARP ioctl copies a user-provided struct arpreq into a stack object. Its arp_dev field may contain IFNAMSIZ bytes without a NUL terminator. Such input is passed to dev_get_by_name_rcu() or __dev_get_by_name(), where strcmp() can read past the end of the stack object when a matching alternative interface name exists. Terminate the field before the lookup to prevent the out-of-bounds read.
References
Impacted products
Vendor Product Version
Linux Linux Version: 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc
Version: 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc
Version: 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc
Version: 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc
Version: 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc
Version: 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc
Version: 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc
Version: 36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc
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{
  "containers": {
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/ipv4/arp.c"
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              "version": "0",
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              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
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              "cpeMatch": [
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: arp: terminate device name before lookup\n\nThe ARP ioctl copies a user-provided struct arpreq into a stack object. Its\narp_dev field may contain IFNAMSIZ bytes without a NUL terminator.\n\nSuch input is passed to dev_get_by_name_rcu() or __dev_get_by_name(), where\nstrcmp() can read past the end of the stack object when a matching\nalternative interface name exists.\n\nTerminate the field before the lookup to prevent the out-of-bounds read."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:20:32.370Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ae6d704dbf9542b0a0830ec91a2db4f30307e7d8"
        },
        {
          "url": "https://git.kernel.org/stable/c/47107491b48ceef0a2faa7a010cfa961f211ef9f"
        },
        {
          "url": "https://git.kernel.org/stable/c/7389757d88f54237951d7497d9c4dae7cc6d64be"
        },
        {
          "url": "https://git.kernel.org/stable/c/1b08c5c3ac27c9ff91c5309f4a32b4e91ce2263b"
        },
        {
          "url": "https://git.kernel.org/stable/c/414bbad9928598904313299ac9e037a73f520be1"
        },
        {
          "url": "https://git.kernel.org/stable/c/ba664d83638640cf454b65167339cbf20dfd6f10"
        },
        {
          "url": "https://git.kernel.org/stable/c/35e716a70733472ede300540082d64c33bf3b4c9"
        },
        {
          "url": "https://git.kernel.org/stable/c/d8b6529e80bcb4fb8177121404cbb3377acaebd2"
        }
      ],
      "title": "net: arp: terminate device name before lookup",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98495",
    "datePublished": "2026-10-18T15:16:24.810Z",
    "dateReserved": "2026-09-25T10:25:14.353Z",
    "dateUpdated": "2026-10-19T09:20:32.370Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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