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GHSA-95X9-5832-JCHC

Vulnerability from github – Published: 2026-09-16 12:30 – Updated: 2026-09-16 12:30

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-89949"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-16T11:17:05Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-95x9-5832-jchc",
  "modified": "2026-09-16T12:30:42Z",
  "published": "2026-09-16T12:30:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89949"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0121afa52cdb88cfb4d5d7bd126a23a9100121d8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c2df865338bbf92aa45b9253e5f9b8ef2d9992f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/15dbfb37f0e1a085d48deeb8f5238e9d28127dde"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1cfa7d5f70d54cb8c7e82df739430782d1996ee1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/91c99b4e152023c7d458a5dedd52d2b0d7df4ce3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a170d4617e8cca05a1314de61728a262ef272782"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b1bbc694ca51adb8dbed3f3235b4fcbdb44e0e20"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c74a4acf41d19f21199dec2d6c813c90d31cd02c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-89949 (GCVE-0-2026-89949)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:32 – Updated: 2026-09-16 10:32

Title

batman-adv: dat: avoid unaligned fault in IP extraction

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.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/b1bbc694ca51adb8d…
https://git.kernel.org/stable/c/15dbfb37f0e1a085d…
https://git.kernel.org/stable/c/a170d4617e8cca05a…
https://git.kernel.org/stable/c/c74a4acf41d19f211…
https://git.kernel.org/stable/c/91c99b4e152023c7d…
https://git.kernel.org/stable/c/1cfa7d5f70d54cb8c…
https://git.kernel.org/stable/c/0c2df865338bbf92a…
https://git.kernel.org/stable/c/0121afa52cdb88cfb…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f , < b1bbc694ca51adb8dbed3f3235b4fcbdb44e0e20 (git) Affected: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f , < 15dbfb37f0e1a085d48deeb8f5238e9d28127dde (git) Affected: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f , < a170d4617e8cca05a1314de61728a262ef272782 (git) Affected: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f , < c74a4acf41d19f21199dec2d6c813c90d31cd02c (git) Affected: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f , < 91c99b4e152023c7d458a5dedd52d2b0d7df4ce3 (git) Affected: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f , < 1cfa7d5f70d54cb8c7e82df739430782d1996ee1 (git) Affected: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f , < 0c2df865338bbf92aa45b9253e5f9b8ef2d9992f (git) Affected: 5c3a0e5535933349a5d6e6bc8b704e0611f21d3f , < 0121afa52cdb88cfb4d5d7bd126a23a9100121d8 (git)
Linux	Linux	Affected: 3.8 Unaffected: 0 , < 3.8 (semver) Unaffected: 5.10.270 , ≤ 5.10.* (semver) Unaffected: 5.15.221 , ≤ 5.15.* (semver) Unaffected: 6.1.188 , ≤ 6.1.* (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.51 , ≤ 6.18.* (semver) Unaffected: 7.2.5 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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          "programFiles": [
            "net/batman-adv/distributed-arp-table.c"
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              "status": "unaffected",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.

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GHSA-95X9-5832-JCHC

CVE-2026-89949 (GCVE-0-2026-89949)

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