CVE-2024-50011
📋 TL;DR
This Linux kernel vulnerability involves a missing empty item in the ASoC Intel RPL matching code, which could cause the kernel to read beyond array boundaries during audio subsystem initialization. Systems using affected Intel audio hardware with vulnerable kernel versions are at risk, primarily Linux servers and workstations with specific Intel audio components.
💻 Affected Systems
- Linux kernel with Intel ASoC audio support
📦 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 →⚠️ Risk & Real-World Impact
Worst Case
Kernel panic or system crash during audio subsystem initialization, leading to denial of service and potential system instability.
Likely Case
System instability or crashes when audio devices are initialized, particularly affecting systems with specific Intel audio hardware configurations.
If Mitigated
Minor system instability that may require restarting audio services or rebooting the system.
🎯 Exploit Status
Exploitation requires triggering audio subsystem initialization with specific hardware configurations. This is a local vulnerability that could be triggered by user-space applications or system services.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel commits 5afc29ba44fdd1bcbad4e07246c395d946301580 and aa3109ee91fe09e696274e6ac44813df8d13678f
Vendor Advisory: https://git.kernel.org/stable/c/5afc29ba44fdd1bcbad4e07246c395d946301580
Restart Required: Yes
Instructions:
1. Update to a kernel version containing the fix. 2. Check your distribution's security advisories for specific patched versions. 3. Reboot the system after kernel update.
🔧 Temporary Workarounds
Disable affected audio modules
linuxPrevent loading of vulnerable Intel ASoC audio modules
echo 'blacklist snd_soc_intel_rpl_match' >> /etc/modprobe.d/blacklist.conf
rmmod snd_soc_intel_rpl_match
🧯 If You Can't Patch
- Restrict local user access to systems with vulnerable configurations
- Monitor system logs for audio subsystem crashes or kernel panics
🔍 How to Verify
Check if Vulnerable:
Check kernel version and whether Intel ASoC audio modules are loaded: lsmod | grep -i 'snd_soc_intel'Check Version:
uname -rVerify Fix Applied:
Verify kernel version is patched and check dmesg for audio initialization errors: dmesg | grep -i 'asoc\|audio\|hda_sdw'📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages
- Audio subsystem initialization failures in dmesg
- ASoC-related error messages
Network Indicators:
- None - this is a local vulnerability
SIEM Query:
source="kernel" AND ("panic" OR "ASoC" OR "audio" OR "hda_sdw")