CVE-2024-57907
📋 TL;DR
This CVE-2024-57907 is an information leak vulnerability in the Linux kernel's Rockchip SARADC driver. It allows uninitialized kernel memory to be exposed to userspace through triggered buffer operations. Systems using affected Linux kernel versions with Rockchip hardware are vulnerable.
💻 Affected Systems
- Linux kernel with rockchip_saradc 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 →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 memory disclosure could reveal sensitive information including cryptographic keys, process memory, or other privileged data to unprivileged users.
Likely Case
Information leak exposing random kernel memory contents, potentially including sensitive data fragments, to userspace applications.
If Mitigated
No information leak occurs; userspace receives properly initialized data only for active channels.
🎯 Exploit Status
Exploitation requires local access, specific hardware, and understanding of the driver's triggered buffer interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing fix commits: 38724591364e, 5a95fbbecec7, 64b79afdca7b, 7a07fb80ea88, 8193941bc4fe
Vendor Advisory: https://git.kernel.org/stable/c/38724591364e1e3b278b4053f102b49ea06ee17c
Restart Required: No
Instructions:
1. Update Linux kernel to version containing the fix commits. 2. For distributions: Use package manager to update kernel package. 3. For custom kernels: Apply the patch from kernel.org and rebuild.
🔧 Temporary Workarounds
Disable triggered buffer mode
LinuxPrevent use of the vulnerable triggered buffer functionality in the rockchip_saradc driver
echo 0 > /sys/bus/iio/devices/iio:deviceX/buffer/enable
Replace X with actual device number
🧯 If You Can't Patch
- Restrict access to users who can interact with the SARADC device interface
- Disable or blacklist the rockchip_saradc kernel module if not needed
🔍 How to Verify
Check if Vulnerable:
Check kernel version and if rockchip_saradc module is loaded: lsmod | grep rockchip_saradcCheck Version:
uname -rVerify Fix Applied:
Verify kernel version includes fix commits or check that the driver properly initializes buffer data structures📡 Detection & Monitoring
Log Indicators:
- Kernel logs showing rockchip_saradc driver activity
- Unexpected access to IIO device interfaces
Network Indicators:
- Not applicable - local vulnerability only
SIEM Query:
Process monitoring for applications accessing /sys/bus/iio/devices/iio:device*/buffer interfaces🔗 References
- https://git.kernel.org/stable/c/38724591364e1e3b278b4053f102b49ea06ee17c
- https://git.kernel.org/stable/c/5a95fbbecec7a34bbad5dcc3156700b8711d53c4
- https://git.kernel.org/stable/c/64b79afdca7b27a768c7d3716b7f4deb1d6b955c
- https://git.kernel.org/stable/c/7a07fb80ea886e9134284a27d0155cca7649e293
- https://git.kernel.org/stable/c/8193941bc4fe7247ff13233f328aea709f574554
- https://git.kernel.org/stable/c/85a9c98a5e0f22d911b00077d751e34fff1401aa
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
