CVE-2025-40236

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Source
https://cve.org/CVERecord?id=CVE-2025-40236
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40236.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-40236
Downstream
Published
2025-12-04T15:31:26.497Z
Modified
2026-05-15T04:13:47.644551762Z
Summary
virtio-net: zero unused hash fields
Details

In the Linux kernel, the following vulnerability has been resolved:

virtio-net: zero unused hash fields

When GSO tunnel is negotiated virtionethdrtnlfrom_skb() tries to initialize the tunnel metadata but forget to zero unused rxhash fields. This may leak information to another side. Fixing this by zeroing the unused hash fields.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40236.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.17.0
Fixed
6.17.6

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-40236.json"