CVE-2025-39710
📋 TL;DR
A memory safety vulnerability in the Linux kernel's Venus media driver allows potential out-of-bounds memory access when processing packets from firmware. This could lead to system crashes or arbitrary code execution. Systems using affected Linux kernel versions with Venus media driver enabled are vulnerable.
💻 Affected Systems
- Linux kernel
📦 What is this software?
Linux Kernel by Linux
The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...
Learn more about Linux Kernel →Linux Kernel by Linux
The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...
Learn more about Linux Kernel →Linux Kernel by Linux
The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...
Learn more about Linux Kernel →Linux Kernel by Linux
The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...
Learn more about Linux Kernel →Linux Kernel by Linux
The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...
Learn more about Linux Kernel →Linux Kernel by Linux
The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...
Learn more about Linux Kernel →Linux Kernel by Linux
The Linux Kernel is the core component of the Linux operating system, serving as the critical interface between computer hardware and software processes. As the heart of millions of servers, cloud infrastructure, embedded systems, Android devices, and IoT deployments worldwide, the Linux Kernel mana...
Learn more about Linux Kernel →⚠️ Risk & Real-World Impact
Worst Case
Kernel panic, system crash, or potential arbitrary code execution with kernel privileges leading to complete system compromise.
Likely Case
System instability, crashes, or denial of service affecting media processing functionality.
If Mitigated
No impact if the vulnerability is patched or the Venus driver is not in use.
🎯 Exploit Status
Exploitation requires triggering the Venus driver with malicious firmware packets. No public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing commits: 0520c89f6280d2b60ab537d5743601185ee7d8ab, 2d8cea8310a245730816a1fd0c9fa4a5a3bdc68c, 49befc830daa743e051a65468c05c2ff9e8580e6, 7638bae4539dcebc3f68fda74ac35d73618ec440, ba567c2e52fbcf0e20502746bdaa79e911c2e8cf
Vendor Advisory: https://git.kernel.org/stable/c/0520c89f6280d2b60ab537d5743601185ee7d8ab
Restart Required: Yes
Instructions:
1. Update Linux kernel to patched version from your distribution vendor. 2. Reboot system to load new kernel. 3. Verify kernel version after reboot.
🔧 Temporary Workarounds
Disable Venus driver module
linuxPrevent loading of vulnerable Venus media driver module
echo 'blacklist venus' >> /etc/modprobe.d/blacklist-venus.conf
rmmod venus
🧯 If You Can't Patch
- Restrict access to media processing functionality and monitor for crashes
- Implement strict application control to prevent untrusted applications from using media processing
🔍 How to Verify
Check if Vulnerable:
Check if Venus driver is loaded: lsmod | grep venus. Check kernel version against patched versions.Check Version:
uname -rVerify Fix Applied:
Verify kernel version includes the fix commits. Check Venus driver functionality works without crashes.📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- OOM killer messages
- Media processing failures in system logs
Network Indicators:
- None - this is a local driver vulnerability
SIEM Query:
Search for kernel panic events or Venus driver crash messages in system logs🔗 References
- https://git.kernel.org/stable/c/0520c89f6280d2b60ab537d5743601185ee7d8ab
- https://git.kernel.org/stable/c/2d8cea8310a245730816a1fd0c9fa4a5a3bdc68c
- https://git.kernel.org/stable/c/49befc830daa743e051a65468c05c2ff9e8580e6
- https://git.kernel.org/stable/c/7638bae4539dcebc3f68fda74ac35d73618ec440
- https://git.kernel.org/stable/c/ba567c2e52fbcf0e20502746bdaa79e911c2e8cf
- https://git.kernel.org/stable/c/ef09b96665f16f3f0bac4e111160e6f24f1f8791
- https://git.kernel.org/stable/c/f0cbd9386f974d310a0d20a02e4a1323e95ea654
- https://git.kernel.org/stable/c/f5b7a943055a4a106d40a03bacd940e28cc1955f
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
