CVE-2024-41069
📋 TL;DR
This CVE-2024-41069 is a use-after-free vulnerability in the Linux kernel's ASoC (Audio System on Chip) topology subsystem. It allows attackers to potentially execute arbitrary code or cause denial of service by exploiting freed memory references after topology file parsing. This affects Linux systems using ASoC audio components.
💻 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 →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
Local privilege escalation to kernel-level code execution, potentially leading to full system compromise.
Likely Case
Kernel panic or system crash causing denial of service.
If Mitigated
Limited impact if proper access controls prevent local users from loading malicious topology files.
🎯 Exploit Status
Requires local access and ability to load malicious topology files. No public exploit code identified in references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Fixed in kernel commits: 97ab304ecd95c0b1703ff8c8c3956dc6e2afe8e1, ab5a6208b4d6872b1c6ecea1867940fc668cc76d, b188d7f3dfab10e332e3c1066e18857964a520d2, ccae5c6a1fab9494c86b7856faf05e296c617702
Vendor Advisory: https://git.kernel.org/stable/c/97ab304ecd95c0b1703ff8c8c3956dc6e2afe8e1
Restart Required: Yes
Instructions:
1. Update Linux kernel to version containing the fix commits. 2. Reboot system to load new kernel. 3. Verify kernel version after reboot.
🔧 Temporary Workarounds
Restrict topology file loading
linuxLimit access to ASoC topology functionality to prevent malicious file loading.
echo 0 > /sys/module/snd_soc_tplg/parameters/topology_override
chmod 600 /sys/module/snd_soc_tplg/parameters/*
🧯 If You Can't Patch
- Implement strict access controls to prevent local users from loading arbitrary topology files.
- Monitor system logs for unusual audio subsystem activity or kernel panics.
🔍 How to Verify
Check if Vulnerable:
Check kernel version and compare with patched versions. Examine if ASoC topology module is loaded: lsmod | grep snd_soc_tplgCheck Version:
uname -rVerify Fix Applied:
Verify kernel version includes fix commits: uname -r and check git log for commit hashes.📡 Detection & Monitoring
Log Indicators:
- Kernel oops messages related to ASoC or topology
- Unexpected audio subsystem crashes
- Use-after-free kernel warnings
Network Indicators:
- None - local vulnerability only
SIEM Query:
source="kernel" AND ("ASoC" OR "topology" OR "use-after-free")🔗 References
- https://git.kernel.org/stable/c/97ab304ecd95c0b1703ff8c8c3956dc6e2afe8e1
- https://git.kernel.org/stable/c/ab5a6208b4d6872b1c6ecea1867940fc668cc76d
- https://git.kernel.org/stable/c/b188d7f3dfab10e332e3c1066e18857964a520d2
- https://git.kernel.org/stable/c/ccae5c6a1fab9494c86b7856faf05e296c617702
- https://git.kernel.org/stable/c/97ab304ecd95c0b1703ff8c8c3956dc6e2afe8e1
- https://git.kernel.org/stable/c/ab5a6208b4d6872b1c6ecea1867940fc668cc76d
- https://git.kernel.org/stable/c/b188d7f3dfab10e332e3c1066e18857964a520d2
- https://git.kernel.org/stable/c/ccae5c6a1fab9494c86b7856faf05e296c617702
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
