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net: arp: terminate device name before lookup

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-98495

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-98495

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
        "lessThan": "ae6d704dbf9542b0a0830ec91a2db4f30307e7d8",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
        "lessThan": "47107491b48ceef0a2faa7a010cfa961f211ef9f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
        "lessThan": "7389757d88f54237951d7497d9c4dae7cc6d64be",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
        "lessThan": "1b08c5c3ac27c9ff91c5309f4a32b4e91ce2263b",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
        "lessThan": "414bbad9928598904313299ac9e037a73f520be1",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
        "lessThan": "ba664d83638640cf454b65167339cbf20dfd6f10",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
        "lessThan": "35e716a70733472ede300540082d64c33bf3b4c9",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "36fbf1e52bd3ff8a5cb604955eedfc9350c2e6cc",
        "lessThan": "d8b6529e80bcb4fb8177121404cbb3377acaebd2",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/ipv4/arp.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.5"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.5",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.271",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.222",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.189",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.158",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.112",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.55",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.9",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/ipv4/arp.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-98495

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#38534 · Revision 1
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Publisher date
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