Riskcovery

CVE-2025-40236

virtio-net: zero unused hash fields

State
Published
Severity
Not scored
Published
Dec 4, 2025
Updated
May 11, 2026
Reserved
Apr 16, 2025

Read the record on cve.org

Description

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

virtio-net: zero unused hash fields

When GSO tunnel is negotiated virtio_net_hdr_tnl_from_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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • a2fb4bc4e2a6a031683910d85b278c1d25ae5420 to before b625d231c66a6041e98817ffc944bf6e4c45b2e3Affected
  • a2fb4bc4e2a6a031683910d85b278c1d25ae5420 to before b2284768c6b32aa224ca7d0ef0741beb434f03aaAffected
LinuxLinux
  • 6.17Affected
  • before 6.17Not affected
  • 6.17.6 through 6.17.*Not affected
  • 6.18 and laterNot affected

References

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