CVE-2024-41013
📋 TL;DR
This CVE-2024-41013 is an out-of-bounds read vulnerability in the XFS filesystem implementation in the Linux kernel. Attackers can exploit this by crafting malicious directory structures to cause kernel memory corruption, potentially leading to information disclosure or system crashes. All Linux systems using XFS filesystems are affected.
💻 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 denial of service, or potential information disclosure of kernel memory contents which could aid further exploitation.
Likely Case
System crash or instability when accessing specially crafted directories, leading to denial of service.
If Mitigated
Minimal impact with proper access controls preventing untrusted users from creating malicious directory structures.
🎯 Exploit Status
Exploitation requires ability to create or modify directory structures on XFS filesystem, typically requiring local access or compromised service.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Kernel versions containing commits 0c7fcdb6d06cdf8b19b57c17605215b06afa864a and related fixes
Vendor Advisory: https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Restart Required: Yes
Instructions:
1. Update Linux kernel to patched version from your distribution's repositories. 2. Reboot system to load new kernel.
🔧 Temporary Workarounds
Avoid XFS filesystem usage
linuxUse alternative filesystems like ext4 where possible
Restrict filesystem access
linuxLimit who can create/modify directories on XFS filesystems
chmod 755 /mount/point
setfacl -m u:user:rx /mount/point
🧯 If You Can't Patch
- Implement strict access controls on XFS filesystems to prevent untrusted users from creating directories
- Monitor system logs for kernel panic or crash events related to filesystem operations
🔍 How to Verify
Check if Vulnerable:
Check kernel version and verify if XFS is in use: 'uname -r' and 'mount | grep xfs'Check Version:
uname -rVerify Fix Applied:
Verify kernel version is updated and check for XFS module version: 'modinfo xfs | grep version'📡 Detection & Monitoring
Log Indicators:
- Kernel panic messages
- Filesystem corruption errors in dmesg
- System crash reports
SIEM Query:
source="kernel" AND ("panic" OR "Oops" OR "BUG") AND ("XFS" OR "filesystem")🔗 References
- https://git.kernel.org/stable/c/0c7fcdb6d06cdf8b19b57c17605215b06afa864a
- https://git.kernel.org/stable/c/b0932e4f9da85349d1c8f2a77d2a7a7163b8511d
- https://git.kernel.org/stable/c/ca96d83c93071f95cf962ce92406621a472df31b
- https://git.kernel.org/stable/c/0c7fcdb6d06cdf8b19b57c17605215b06afa864a
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
