CVE-2026-89949 (GCVE-0-2026-89949)
Vulnerability from cvelistv5
Published
2026-09-16 10:32
Modified
2026-10-19 08:55
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: avoid unaligned fault in IP extraction Independent of the alignment of the ARP packet in the SKB, either the batadv_arp_ip_src or the batadv_arp_ip_dst will have an unaligned access (on HW without native unaligned read support). Use get_unaligned() to handle this properly on all architectures.
References
Impacted products
Vendor Product Version
Linux Linux Version: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f
Version: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f
Version: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f
Version: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f
Version: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f
Version: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f
Version: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f
Version: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f
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{
  "containers": {
    "cna": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/distributed-arp-table.c"
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          "vendor": "Linux",
          "versions": [
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            },
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              "version": "0",
              "versionType": "semver"
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              "version": "7.3",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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          "nodes": [
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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\nbatman-adv: dat: avoid unaligned fault in IP extraction\n\nIndependent of the alignment of the ARP packet in the SKB, either the\nbatadv_arp_ip_src or the batadv_arp_ip_dst will have an unaligned access\n(on HW without native unaligned read support).\n\nUse get_unaligned() to handle this properly on all architectures."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:55:23.408Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/b1bbc694ca51adb8dbed3f3235b4fcbdb44e0e20"
        },
        {
          "url": "https://git.kernel.org/stable/c/15dbfb37f0e1a085d48deeb8f5238e9d28127dde"
        },
        {
          "url": "https://git.kernel.org/stable/c/a170d4617e8cca05a1314de61728a262ef272782"
        },
        {
          "url": "https://git.kernel.org/stable/c/c74a4acf41d19f21199dec2d6c813c90d31cd02c"
        },
        {
          "url": "https://git.kernel.org/stable/c/91c99b4e152023c7d458a5dedd52d2b0d7df4ce3"
        },
        {
          "url": "https://git.kernel.org/stable/c/1cfa7d5f70d54cb8c7e82df739430782d1996ee1"
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        {
          "url": "https://git.kernel.org/stable/c/0c2df865338bbf92aa45b9253e5f9b8ef2d9992f"
        },
        {
          "url": "https://git.kernel.org/stable/c/0121afa52cdb88cfb4d5d7bd126a23a9100121d8"
        }
      ],
      "title": "batman-adv: dat: avoid unaligned fault in IP extraction",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-89949",
    "datePublished": "2026-09-16T10:32:34.794Z",
    "dateReserved": "2026-09-11T19:38:34.777Z",
    "dateUpdated": "2026-10-19T08:55:23.408Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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