CVE-2025-37979
📋 TL;DR
This CVE describes a buffer overflow vulnerability in the Linux kernel's ASoC (Audio System on Chip) driver for Qualcomm sc7280 LPASS (Low Power Audio SubSystem). The vulnerability allows out-of-bounds memory access when handling certain audio port configurations, potentially leading to kernel crashes or arbitrary code execution. It affects Linux systems using the sc7280 audio driver.
💻 Affected Systems
- Linux kernel with ASoC qcom sc7280 LPASS driver
📦 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 →⚠️ Risk & Real-World Impact
Worst Case
Kernel panic leading to system crash, or potential arbitrary code execution with kernel privileges resulting in complete system compromise.
Likely Case
System instability, audio subsystem malfunctions, or kernel crashes when specific audio configurations are used.
If Mitigated
Limited impact if audio features are disabled or unused, with potential for denial of service in affected audio functions.
🎯 Exploit Status
Exploitation requires local access and interaction with the audio subsystem. The vulnerability was found through static analysis (SVACE), not active exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patched in kernel commits a12c14577882b1f2b4cff0f86265682f16e97b0c and related stable backports
Vendor Advisory: https://git.kernel.org/stable/c/a12c14577882b1f2b4cff0f86265682f16e97b0c
Restart Required: Yes
Instructions:
1. Update Linux kernel to version containing the fix. 2. For embedded systems: update vendor kernel or BSP. 3. Reboot system after kernel update.
🔧 Temporary Workarounds
Disable affected audio driver
linuxDisable the sc7280 LPASS audio driver module to prevent exploitation
echo 'blacklist snd_soc_sc7280' >> /etc/modprobe.d/blacklist-sc7280.conf
rmmod snd_soc_sc7280
🧯 If You Can't Patch
- Restrict local user access to audio subsystem functions
- Disable audio features on affected sc7280 systems
🔍 How to Verify
Check if Vulnerable:
Check kernel version and if sc7280 audio driver is loaded: 'uname -r' and 'lsmod | grep sc7280'Check Version:
uname -rVerify Fix Applied:
Verify kernel version is patched and driver loads without errors in dmesg📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages
- Audio subsystem crashes in dmesg
- Out of bounds access warnings
Network Indicators:
- None - this is a local driver vulnerability
SIEM Query:
search 'kernel panic' OR 'sc7280' OR 'LPASS' in system logs🔗 References
- https://git.kernel.org/stable/c/a12c14577882b1f2b4cff0f86265682f16e97b0c
- https://git.kernel.org/stable/c/a31a4934b31faea76e735bab17e63d02fcd8e029
- https://git.kernel.org/stable/c/b807b7c81a6d066757a94af7b8fa5b6a37e4d0b3
- https://git.kernel.org/stable/c/c0ce01e0ff8a0d61a7b089ab309cdc12bc527c39
- https://git.kernel.org/stable/c/d78888853eb53f47ae16cf3aa5d0444d0331b9f8
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
