Vulnerability-Lookup

GHSA-JV9R-93Q3-FCF8

Vulnerability from github – Published: 2026-06-24 09:30 – Updated: 2026-06-28 09:31

Details

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.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-52922"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T08:16:22Z",
    "severity": "HIGH"
  },
  "details": "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": "GHSA-jv9r-93q3-fcf8",
  "modified": "2026-06-28T09:31:36Z",
  "published": "2026-06-24T09:30:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52922"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2d8826a2d3657cea66fb0370f9e521575a673871"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8ef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4d420d9ee70a220a2cd95aa0dd2e15acad66a505"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/866ac1d57040ed0b44ca732e3c66b3aa6b93011c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9bcebaedfb8479cb4affb23c7a0d000ca9a20e73"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9cceea8eeba710def2a5707ee00f00c74a9a1cac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce0c381199402a2c58f4599f4f6ed100d872d0da"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cf48e75fc4fe0d5cc7721c82d454221d01367b93"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-52922 (GCVE-0-2026-52922)

Vulnerability from cvelistv5 – Published: 2026-06-24 07:14 – Updated: 2026-06-28 06:36

Title

batman-adv: dat: handle forward allocation error

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.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/9bcebaedfb8479cb4…
https://git.kernel.org/stable/c/2edb8aeb3cdda9d00…
https://git.kernel.org/stable/c/ce0c381199402a2c5…
https://git.kernel.org/stable/c/866ac1d57040ed0b4…
https://git.kernel.org/stable/c/4d420d9ee70a220a2…
https://git.kernel.org/stable/c/9cceea8eeba710def…
https://git.kernel.org/stable/c/cf48e75fc4fe0d5cc…
https://git.kernel.org/stable/c/2d8826a2d3657cea6…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 785ea1144182c341b8b85b0f8180291839d176a8 , < 9bcebaedfb8479cb4affb23c7a0d000ca9a20e73 (git) Affected: 785ea1144182c341b8b85b0f8180291839d176a8 , < 2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8ef (git) Affected: 785ea1144182c341b8b85b0f8180291839d176a8 , < ce0c381199402a2c58f4599f4f6ed100d872d0da (git) Affected: 785ea1144182c341b8b85b0f8180291839d176a8 , < 866ac1d57040ed0b44ca732e3c66b3aa6b93011c (git) Affected: 785ea1144182c341b8b85b0f8180291839d176a8 , < 4d420d9ee70a220a2cd95aa0dd2e15acad66a505 (git) Affected: 785ea1144182c341b8b85b0f8180291839d176a8 , < 9cceea8eeba710def2a5707ee00f00c74a9a1cac (git) Affected: 785ea1144182c341b8b85b0f8180291839d176a8 , < cf48e75fc4fe0d5cc7721c82d454221d01367b93 (git) Affected: 785ea1144182c341b8b85b0f8180291839d176a8 , < 2d8826a2d3657cea66fb0370f9e521575a673871 (git)
Linux	Linux	Affected: 3.8 Unaffected: 0 , < 3.8 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.142 , ≤ 6.6.* (semver) Unaffected: 6.12.92 , ≤ 6.12.* (semver) Unaffected: 6.18.34 , ≤ 6.18.* (semver) Unaffected: 7.0.11 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "net/batman-adv/distributed-arp-table.c"
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              "versionType": "semver"
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-JV9R-93Q3-FCF8

CVE-2026-52922 (GCVE-0-2026-52922)

Tags

Sightings

Nomenclature