CVE-2025-10824
📋 TL;DR
A use-after-free vulnerability in axboe fio's __parse_jobs_ini function allows local attackers to potentially execute arbitrary code or cause denial of service. This affects systems running fio versions up to 3.41. The vulnerability requires local access to exploit.
💻 Affected Systems
- axboe fio
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Local privilege escalation leading to full system compromise or persistent backdoor installation
Likely Case
Denial of service causing fio to crash or local user gaining elevated privileges
If Mitigated
Limited impact due to proper access controls and isolation of fio processes
🎯 Exploit Status
Proof of concept available in GitHub references, requires local access and knowledge of fio usage
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.42 or later
Vendor Advisory: https://github.com/axboe/fio/issues/1981
Restart Required: No
Instructions:
1. Check current fio version with 'fio --version'. 2. If version is 3.41 or earlier, upgrade to 3.42+. 3. For package managers: 'apt update && apt upgrade fio' or 'yum update fio'. 4. For source: download latest from GitHub and compile.
🔧 Temporary Workarounds
Restrict fio access
allLimit which users can execute fio binary to reduce attack surface
chmod 750 /usr/bin/fio
setfacl -m u:root:rwx /usr/bin/fio
setfacl -m g:trusted_users:rx /usr/bin/fio
🧯 If You Can't Patch
- Implement strict access controls to limit which users can run fio
- Run fio in isolated containers or VMs with minimal privileges
🔍 How to Verify
Check if Vulnerable:
Run 'fio --version' and check if output shows 3.41 or earlierCheck Version:
fio --versionVerify Fix Applied:
After patching, run 'fio --version' and confirm version is 3.42 or later📡 Detection & Monitoring
Log Indicators:
- Segmentation faults in fio processes
- Unexpected fio crashes with memory errors
- Abnormal fio process termination
Network Indicators:
- None - local exploit only
SIEM Query:
process.name:"fio" AND (event.action:"segmentation_fault" OR event.outcome:"failure")