CVE-2024-53147
📋 TL;DR
This CVE-2024-53147 is an out-of-bounds memory access vulnerability in the Linux kernel's exFAT filesystem driver. It allows attackers with local access to trigger file system corruption when accessing specially crafted directories on exFAT partitions. All Linux systems using the affected kernel versions with exFAT support are potentially vulnerable.
💻 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 →⚠️ Risk & Real-World Impact
Worst Case
Complete file system corruption leading to data loss, system instability, or potential privilege escalation if combined with other vulnerabilities.
Likely Case
File system corruption causing data loss or system crashes when accessing corrupted exFAT directories.
If Mitigated
Limited impact with proper access controls preventing unauthorized users from mounting exFAT partitions.
🎯 Exploit Status
Requires local access and ability to mount/create corrupted exFAT directories. No public exploit available at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing commits 184fa506e392, 3ddd1cb2b458, or a0120d646336
Vendor Advisory: https://git.kernel.org/stable/c/184fa506e392eb78364d9283c961217ff2c0617b
Restart Required: Yes
Instructions:
1. Update Linux kernel to patched version from your distribution. 2. Reboot system to load new kernel. 3. Verify kernel version after reboot.
🔧 Temporary Workarounds
Disable exFAT module
linuxPrevent loading of exFAT filesystem driver
echo 'blacklist exfat' > /etc/modprobe.d/blacklist-exfat.conf
rmmod exfat
Restrict exFAT mounting
linuxPrevent unauthorized users from mounting exFAT partitions
chmod 700 /bin/mount
setfacl -m u:root:rwx /bin/mount
🧯 If You Can't Patch
- Restrict physical and remote access to systems with exFAT support
- Implement strict access controls on exFAT partition mounting capabilities
🔍 How to Verify
Check if Vulnerable:
Check kernel version and if exFAT module is loaded: uname -r && lsmod | grep exfatCheck Version:
uname -rVerify Fix Applied:
Verify kernel version is patched and exFAT module loads without errors📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages
- Filesystem corruption errors in dmesg
- exFAT driver crash logs
Network Indicators:
- None - local vulnerability only
SIEM Query:
source="kernel" AND ("exfat" OR "filesystem corruption" OR "out of bounds")