CVE-2025-40236

Linux Kernel 6.17-6.17.5 - Information Disclosure via Uninitialized rxhash Fields

Title source: llm

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.

References (2)

Core 2

Core References

Patch

https://git.kernel.org/stable/c/b625d231c66a6041e98817ffc944bf6e4c45b2e3

Patch

https://git.kernel.org/stable/c/b2284768c6b32aa224ca7d0ef0741beb434f03aa

Scores

EPSS 0.0016

EPSS Percentile 5.7%

Details

Status published

Products (7)

linux/Kernel 6.17.0 - 6.17.6linux

Linux/Linux < 6.17

Linux/Linux 6.17

Linux/Linux 6.17.6 - 6.17.*

Linux/Linux 6.18

Linux/Linux a2fb4bc4e2a6a031683910d85b278c1d25ae5420 - b2284768c6b32aa224ca7d0ef0741beb434f03aa

Linux/Linux a2fb4bc4e2a6a031683910d85b278c1d25ae5420 - b625d231c66a6041e98817ffc944bf6e4c45b2e3

Published Dec 04, 2025

Tracked Since Feb 18, 2026