CVE-2026-24825
📋 TL;DR
This CVE describes a memory leak vulnerability in ydb-platform's ydb software, specifically in the yajl modules within yail_tree.C. Attackers could exploit this to cause denial of service through resource exhaustion. Users running affected ydb versions are impacted.
💻 Affected Systems
- ydb-platform ydb
⚠️ 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
Complete system crash or unavailability due to memory exhaustion, potentially leading to data loss or service disruption.
Likely Case
Gradual performance degradation and eventual service instability as memory consumption increases over time.
If Mitigated
Minimal impact with proper monitoring and resource limits in place, though memory usage may still be higher than expected.
🎯 Exploit Status
Memory leak vulnerabilities typically require repeated triggering to cause significant impact. Exploitation would depend on accessing yajl parsing functionality.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 24.4.4.3 or later (check GitHub PR for exact version)
Vendor Advisory: https://github.com/ydb-platform/ydb/pull/17570
Restart Required: Yes
Instructions:
1. Check current ydb version. 2. Update to version 24.4.4.3 or later. 3. Restart ydb services. 4. Verify the fix is applied.
🔧 Temporary Workarounds
Memory usage monitoring and limits
allImplement monitoring and resource limits to detect and prevent memory exhaustion
# Set memory limits for ydb process
# Use ulimit or container memory limits
# Example: docker run --memory=2g ydb
Reduce yajl parsing usage
allLimit or avoid usage of yajl parsing functionality if possible
# Review application code for yajl usage
# Consider alternative parsing methods if feasible
🧯 If You Can't Patch
- Implement aggressive memory monitoring and alerting for ydb processes
- Deploy rate limiting or input validation for yajl parsing operations
🔍 How to Verify
Check if Vulnerable:
Check ydb version and compare against affected range. Review if yajl parsing is used in your deployment.Check Version:
ydb --version or check ydb package versionVerify Fix Applied:
Update to patched version and monitor memory usage during yajl parsing operations for stability.📡 Detection & Monitoring
Log Indicators:
- Unusual memory growth patterns in ydb processes
- Out of memory errors or crashes in ydb logs
- Increased swap usage
Network Indicators:
- Service degradation or timeouts from ydb endpoints
- Increased response times
SIEM Query:
source="ydb.log" ("out of memory" OR "memory allocation failed" OR "segmentation fault")