CVE-2026-52922 (GCVE-0-2026-52922)
Vulnerability from cvelistv5 – Published: 2026-06-24 07:14 – Updated: 2026-06-28 06:36
VLAI?
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)
Assigner
References
Impacted 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) |
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{
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"programFiles": [
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"versions": [
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"version": "3.8"
},
{
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"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",
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},
{
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"status": "unaffected",
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},
{
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"version": "6.12.92",
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},
{
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},
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],
"cpeApplicability": [
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"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."
}
],
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"cvssV3_1": {
"baseScore": 7.5,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-28T06:36:43.785Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
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"url": "https://git.kernel.org/stable/c/9bcebaedfb8479cb4affb23c7a0d000ca9a20e73"
},
{
"url": "https://git.kernel.org/stable/c/2edb8aeb3cdda9d00ec4997252dc5bcd6f54d8ef"
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{
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{
"url": "https://git.kernel.org/stable/c/866ac1d57040ed0b44ca732e3c66b3aa6b93011c"
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{
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{
"url": "https://git.kernel.org/stable/c/9cceea8eeba710def2a5707ee00f00c74a9a1cac"
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{
"url": "https://git.kernel.org/stable/c/cf48e75fc4fe0d5cc7721c82d454221d01367b93"
},
{
"url": "https://git.kernel.org/stable/c/2d8826a2d3657cea66fb0370f9e521575a673871"
}
],
"title": "batman-adv: dat: handle forward allocation error",
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"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-52922",
"datePublished": "2026-06-24T07:14:17.185Z",
"dateReserved": "2026-06-09T07:44:35.367Z",
"dateUpdated": "2026-06-28T06:36:43.785Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
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.
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