UnratedFix available
batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface Without rtnl_lock held, a hardif might be retrieved as primary interface of a meshif, but then (while operating on this interface) getting decoupled from the mesh interface. In this case, the meshif still exists but the pointer from the primary hardif to the meshif is set to NULL. The mesh_iface must be checked first to be non-NULL before continuing to send an ARP request using meshif.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.259, 5.15.210, 6.1.176, 6.12.93, 6.18.34, 6.6.143, 7.0.11
- CVEs
- CVE-2026-64094
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 2 Nov 2026, 18:28 UTC · Revision 1
Source evidence
batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface
core-osv · Original sourcePublished 19 Jul 2026, 15:40 UTC
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface Without rtnl_lock held, a hardif might be retrieved as primary interface of a meshif, but then (while operating on this interface) getting decoupled from the mesh interface. In this case, the meshif still exists but the pointer from the primary hardif to the meshif is set to NULL. The mesh_iface must be checked first to be non-NULL before continuing to send an ARP request using meshif.
osv:CVE-2026-64094
Kernel
Fixed versions: 5.10.259, 5.15.210, 6.1.176, 6.6.143, 6.12.93, 6.18.34, 7.0.11
Complete source record
{
"id": "15d2f31ae516bf1590ceab79cbedc0776d2ca1838317349f518cb99db181ad36",
"url": "https://osv.dev/vulnerability/CVE-2026-64094",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface",
"summary": "In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface Without rtnl_lock held, a hardif might be retrieved as primary interface of a meshif, but then (while operating on this interface) getting decoupled from the mesh interface. In this case, the meshif still exists but the pointer from the primary hardif to the meshif is set to NULL. The mesh_iface must be checked first to be non-NULL before continuing to send an ARP request using meshif.",
"evidence": "osv:CVE-2026-64094",
"products": [
{
"name": {
"value": "Kernel",
"evidence": "/affected/1/package/name"
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"prerequisites": [],
"fixed_versions": [
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"value": "5.10.259",
"evidence": "/affected/1/ranges"
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{
"value": "5.15.210",
"evidence": "/affected/1/ranges"
},
{
"value": "6.1.176",
"evidence": "/affected/1/ranges"
},
{
"value": "6.6.143",
"evidence": "/affected/1/ranges"
},
{
"value": "6.12.93",
"evidence": "/affected/1/ranges"
},
{
"value": "6.18.34",
"evidence": "/affected/1/ranges"
},
{
"value": "7.0.11",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
}
],
"severity": "unknown",
"structured": {
"id": "CVE-2026-64094",
"aliases": [
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"affected": [
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"type": "GIT",
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{
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{
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{
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"events": [
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{
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"events": [
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{
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{
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"events": [
{
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{
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},
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "6.13.0"
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{
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},
{
"type": "ECOSYSTEM",
"events": [
{
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{
"fixed": "7.0.11"
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],
"package": {
"name": "Kernel",
"ecosystem": "Linux"
},
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64094.json"
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],
"modified": "2026-10-28T02:30:22.427150777Z",
"provider": "osv",
"references": [
"https://git.kernel.org/stable/c/0f3ebd7bb417aabc44853cc7c2a184ebb0e05b45",
"https://git.kernel.org/stable/c/2a8c9e86529156c62d9187b9ed9454c31665ad33",
"https://git.kernel.org/stable/c/4f6266735a0ba6a568b6d4c9fa51c33a5a7f2d70",
"https://git.kernel.org/stable/c/53cb3511f6eda37d3bd923545fdba6013b6d7bb7",
"https://git.kernel.org/stable/c/555b8d3f5c313d81d46274fd0976352dafc80124",
"https://git.kernel.org/stable/c/6921a7683ae9ad0208d829e71f725a9e25ccff49",
"https://git.kernel.org/stable/c/efb62458c94db1fe3a287e7e89c31b0cfb03f938",
"https://git.kernel.org/stable/c/f80d3d98d2ff78d9e2fe5d68b1f45948c4f7bd24",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64094.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-64094",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
"cna_assigner": "Linux",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64094.json"
}
},
"related_cves": [
{
"value": "CVE-2026-64094",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 488428,
"published_at": "2026-07-19T15:40:01.772+00:00"
}