CVE-2022-49163
📋 TL;DR
This CVE describes an out-of-bounds array access vulnerability in the Linux kernel's imx-jpeg media driver. When parsing malformed JPEG files, the driver can access memory outside its allocated bounds, potentially corrupting critical kernel data structures. This affects Linux systems using the imx-jpeg driver for JPEG image processing.
💻 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 →⚠️ Risk & Real-World Impact
Worst Case
Kernel panic leading to system crash and denial of service, potentially allowing local privilege escalation if memory corruption can be controlled.
Likely Case
System crash or instability when processing malformed JPEG files, requiring reboot to restore functionality.
If Mitigated
No impact if the vulnerable driver isn't loaded or JPEG processing is disabled.
🎯 Exploit Status
Requires ability to process JPEG files on the system; exploitation depends on controlling memory corruption effects
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patches available in stable kernel branches (commits: 02f9f97d54ffc85b50ad77f5b1f3c8f69cd17747, 20c8b90430c5d6c4a3936eaa7c35aac670581487, 97558d170a1236280407e8d29a7d095d2c2ed554, e209e6db2e527db6a93b14c2deedf969caca78fc)
Vendor Advisory: https://git.kernel.org/stable/c/02f9f97d54ffc85b50ad77f5b1f3c8f69cd17747
Restart Required: No
Instructions:
1. Update Linux kernel to patched version from distribution vendor. 2. Apply kernel patches from stable branches if compiling custom kernel. 3. Rebuild and install kernel modules if needed.
🔧 Temporary Workarounds
Disable imx-jpeg module
allPrevent loading of vulnerable driver module
echo 'blacklist imx_jpeg' >> /etc/modprobe.d/blacklist-imx-jpeg.conf
rmmod imx_jpeg
Restrict JPEG file processing
allLimit ability to process untrusted JPEG files on system
🧯 If You Can't Patch
- Implement strict file upload controls for JPEG files
- Monitor system logs for kernel panic or module loading errors
🔍 How to Verify
Check if Vulnerable:
Check if imx_jpeg module is loaded: lsmod | grep imx_jpegCheck Version:
uname -rVerify Fix Applied:
Check kernel version against patched releases from distribution vendor📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages
- Out of bounds access warnings in dmesg
- Module loading failures
Network Indicators:
- None - local vulnerability
SIEM Query:
Search for: 'kernel panic' OR 'imx_jpeg' OR 'out of bounds' in system logs