FKIE_CVE-2026-52922

Vulnerability from fkie_nvd - Published: 2026-06-24 08:16 - Updated: 2026-06-28 08:16
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: batman-adv: dat: handle forward allocation error batadv_dat_forward_data() calls pskb_copy_for_clone() to duplicate an skb for each DHT candidate, but does not check the return value before passing it to batadv_send_skb_prepare_unicast_4addr(). That function dereferences the skb unconditionally, so a failed allocation triggers a NULL pointer dereference. Skip forwarding to the current DHT candidate on allocation failure.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2d8826a2d3657cea66fb0370f9e521575a673871
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8ef
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4d420d9ee70a220a2cd95aa0dd2e15acad66a505
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/866ac1d57040ed0b44ca732e3c66b3aa6b93011c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9bcebaedfb8479cb4affb23c7a0d000ca9a20e73
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9cceea8eeba710def2a5707ee00f00c74a9a1cac
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ce0c381199402a2c58f4599f4f6ed100d872d0da
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/cf48e75fc4fe0d5cc7721c82d454221d01367b93
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/distributed-arp-table.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "9bcebaedfb8479cb4affb23c7a0d000ca9a20e73",
              "status": "affected",
              "version": "785ea1144182c341b8b85b0f8180291839d176a8",
              "versionType": "git"
            },
            {
              "lessThan": "2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8ef",
              "status": "affected",
              "version": "785ea1144182c341b8b85b0f8180291839d176a8",
              "versionType": "git"
            },
            {
              "lessThan": "ce0c381199402a2c58f4599f4f6ed100d872d0da",
              "status": "affected",
              "version": "785ea1144182c341b8b85b0f8180291839d176a8",
              "versionType": "git"
            },
            {
              "lessThan": "866ac1d57040ed0b44ca732e3c66b3aa6b93011c",
              "status": "affected",
              "version": "785ea1144182c341b8b85b0f8180291839d176a8",
              "versionType": "git"
            },
            {
              "lessThan": "4d420d9ee70a220a2cd95aa0dd2e15acad66a505",
              "status": "affected",
              "version": "785ea1144182c341b8b85b0f8180291839d176a8",
              "versionType": "git"
            },
            {
              "lessThan": "9cceea8eeba710def2a5707ee00f00c74a9a1cac",
              "status": "affected",
              "version": "785ea1144182c341b8b85b0f8180291839d176a8",
              "versionType": "git"
            },
            {
              "lessThan": "cf48e75fc4fe0d5cc7721c82d454221d01367b93",
              "status": "affected",
              "version": "785ea1144182c341b8b85b0f8180291839d176a8",
              "versionType": "git"
            },
            {
              "lessThan": "2d8826a2d3657cea66fb0370f9e521575a673871",
              "status": "affected",
              "version": "785ea1144182c341b8b85b0f8180291839d176a8",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/batman-adv/distributed-arp-table.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.8"
            },
            {
              "lessThan": "3.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.142",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.92",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: dat: handle forward allocation error\n\nbatadv_dat_forward_data() calls pskb_copy_for_clone() to duplicate an skb\nfor each DHT candidate, but does not check the return value before passing\nit to batadv_send_skb_prepare_unicast_4addr(). That function dereferences\nthe skb unconditionally, so a failed allocation triggers a NULL pointer\ndereference.\n\nSkip forwarding to the current DHT candidate on allocation failure."
    }
  ],
  "id": "CVE-2026-52922",
  "lastModified": "2026-06-28T08:16:23.807",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-06-24T08:16:22.187",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2d8826a2d3657cea66fb0370f9e521575a673871"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8ef"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4d420d9ee70a220a2cd95aa0dd2e15acad66a505"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/866ac1d57040ed0b44ca732e3c66b3aa6b93011c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9bcebaedfb8479cb4affb23c7a0d000ca9a20e73"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9cceea8eeba710def2a5707ee00f00c74a9a1cac"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ce0c381199402a2c58f4599f4f6ed100d872d0da"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/cf48e75fc4fe0d5cc7721c82d454221d01367b93"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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