CVE-2023-54285
📋 TL;DR
This CVE addresses an integer overflow vulnerability in the Linux kernel's iomap subsystem that could lead to memory corruption or system crashes. It affects 32-bit Linux systems running vulnerable kernel versions. The vulnerability occurs during delalloc scanning operations in the filesystem layer.
💻 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
Kernel panic, system crash, or potential privilege escalation leading to complete system compromise.
Likely Case
System instability, kernel crashes, or denial of service affecting system availability.
If Mitigated
Minimal impact if patched; unpatched systems may experience occasional crashes during specific I/O operations.
🎯 Exploit Status
Exploitation requires triggering specific I/O operations; no public exploits known at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing commits 0c6cf409093f, 5c281b0c5d18, or eee2d2e6ea55
Vendor Advisory: https://git.kernel.org/stable/c/0c6cf409093f307ee05114f834516730c0da5b21
Restart Required: Yes
Instructions:
1. Update Linux kernel to patched version. 2. Reboot system to load new kernel. 3. Verify kernel version after reboot.
🔧 Temporary Workarounds
No specific workaround
linuxNo direct workaround available; kernel update required.
🧯 If You Can't Patch
- Monitor system logs for kernel panics or crashes
- Restrict local user access to minimize potential trigger scenarios
🔍 How to Verify
Check if Vulnerable:
Check kernel version and compare with patched versions containing the fix commits.Check Version:
uname -rVerify Fix Applied:
Verify kernel version includes one of the fix commits: 0c6cf409093f, 5c281b0c5d18, or eee2d2e6ea55📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages
- System crash dumps
- Unexpected system reboots
SIEM Query:
source="kernel" AND ("panic" OR "Oops" OR "BUG")