Skip to content
Covert Channel Exploits Using Multiple CVEs in Linux Kernel

Covert Channel Exploits Using Multiple CVEs in Linux Kernel

First seen 23 Sep 2026, 19:54 UTC

Article Content

Browse articles
ThreatCluster AI
ThreatCluster September 23, 2026 at 20:58 UTC
  • Covert channel exploits CVE-2023-1206 and CVE-2024-49882 in Linux kernel.
  • Data transmission occurs between containers using hugepage leaks.
  • Proof-of-concept code is available, but no active exploitation reported.

A new project demonstrates a covert communication channel exploiting CVE-2023-1206 and CVE-2024-49882 in the Linux kernel. CVE-2023-1206 allows synchronization through IPv6 hash collisions, while CVE-2024-49882 enables data transmission via hugepage leaks. The exploit involves two containers where data is written to hugepages and transmitted through measured hash collisions. Users must utilize kernel version 6.12 with the vulnerabilities to replicate the exploit. This method is particularly concerning for environments using Linux containers. The project provides a Lua dissector for Wireshark to analyze traffic related to this covert channel. The impact is significant as it could lead to unauthorized data exfiltration between containers. Current status indicates that proof-of-concept code is available, but no active exploitation has been confirmed yet.

Start a free Starter trial for enhanced analysis

Ask AI about this cluster

Updated just now How this analysis works

Timeline

2023-06-30
CVE-2023-1206 published
CVE-2023-1206 allows synchronization through IPv6 hash collisions, impacting Linux systems.
Sploitus
2024-10-21
CVE-2024-49882 published
CVE-2024-49882 enables data transmission via hugepage leaks, affecting Linux containers.
Sploitus
2025-02-05
CVE-2025-20029 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2025-10-28
CVE-2025-40040 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2025-12-02
First public PoC for CVE-2023-1206
Proof-of-concept code for CVE-2023-1206 was released, demonstrating its exploitability.
Sploitus
Recent
Lua dissector for Wireshark released
A Lua dissector for analyzing traffic related to the covert channel was made available.
Sploitus

More articles in this cluster (2)

Following this threat?

Track CVE-2023-1206 in your own feed — you're alerted when they show up in new reporting, leak sites or exploitation.

Free account · no card needed