UnratedFix available
net: arp: terminate device name before lookup
Type: advisorySources: OSV
In the Linux kernel, the following vulnerability has been resolved: net: arp: terminate device name before lookup The ARP ioctl copies a user-provided struct arpreq into a stack object. Its arp_dev field may contain IFNAMSIZ bytes without a NUL terminator. Such input is passed to dev_get_by_name_rcu() or __dev_get_by_name(), where strcmp() can read past the end of the stack object when a matching alternative interface name exists. Terminate the field before the lookup to prevent the out-of-bounds read.
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.271, 5.15.222, 6.1.189, 6.12.112, 6.18.55, 6.6.158, 7.2.9
- CVEs
- CVE-2026-98495
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 17:40 UTC · Revision 1
Source evidence
net: arp: terminate device name before lookup
core-osv · Original sourcePublished 18 Oct 2026, 15:16 UTC
In the Linux kernel, the following vulnerability has been resolved: net: arp: terminate device name before lookup The ARP ioctl copies a user-provided struct arpreq into a stack object. Its arp_dev field may contain IFNAMSIZ bytes without a NUL terminator. Such input is passed to dev_get_by_name_rcu() or __dev_get_by_name(), where strcmp() can read past the end of the stack object when a matching alternative interface name exists. Terminate the field before the lookup to prevent the out-of-bounds read.
osv:CVE-2026-98495
Kernel
Fixed versions: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.55, 7.2.9
Complete source record
{
"id": "cbdb39621686e89b0b4bb0c4087539075fde2883682d5a399aaaa2535030904b",
"url": "https://osv.dev/vulnerability/CVE-2026-98495",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "net: arp: terminate device name before lookup",
"summary": "In the Linux kernel, the following vulnerability has been resolved: net: arp: terminate device name before lookup The ARP ioctl copies a user-provided struct arpreq into a stack object. Its arp_dev field may contain IFNAMSIZ bytes without a NUL terminator. Such input is passed to dev_get_by_name_rcu() or __dev_get_by_name(), where strcmp() can read past the end of the stack object when a matching alternative interface name exists. Terminate the field before the lookup to prevent the out-of-bounds read.",
"evidence": "osv:CVE-2026-98495",
"products": [
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"name": {
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"severity": "unknown",
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"package": {
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"modified": "2026-10-28T02:30:37.968445842Z",
"provider": "osv",
"references": [
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"https://git.kernel.org/stable/c/7389757d88f54237951d7497d9c4dae7cc6d64be",
"https://git.kernel.org/stable/c/ae6d704dbf9542b0a0830ec91a2db4f30307e7d8",
"https://git.kernel.org/stable/c/ba664d83638640cf454b65167339cbf20dfd6f10",
"https://git.kernel.org/stable/c/d8b6529e80bcb4fb8177121404cbb3377acaebd2",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98495.json",
"https://nvd.nist.gov/vuln/detail/CVE-2026-98495",
"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
],
"provider_metadata": {
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"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98495.json"
}
},
"related_cves": [
{
"value": "CVE-2026-98495",
"evidence": "/id"
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],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 505415,
"published_at": "2026-10-18T15:16:24.81+00:00"
}