CVE-2026-24825
Use-After-Free Memory Leak in ydb-platform yajl Module
Publication date: 2026-01-27
Last updated on: 2026-01-27
Assigner: Government Technology Agency of Singapore Cyber Security Group (GovTech CSG)
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| ydb-platform | ydb | to 24.4.4.2 (inc) |
| unknown_vendor | yajl | 2.1.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-401 | The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a Missing Release of Memory after Effective Lifetime issue in the ydb-platform's ydb software, specifically in the contrib/libs/yajl modules and associated with the yail_tree.C file. It causes a memory leak because memory that should be released after use is not properly freed, leading to inefficient memory usage and potential exhaustion over time.
How can this vulnerability impact me? :
The vulnerability can lead to memory leaks in the affected software, which may cause increased memory consumption, degraded performance, and potentially system instability or crashes if the memory is exhausted. This can affect the reliability and availability of applications using the ydb-platform ydb.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should apply the security patch that fixes the memory leak in the yajl library, specifically the patch applied to the `yajl_tree_parse()` function as described in the pull request merged on April 26, 2025. Updating to the fixed version of ydb-platform ydb that includes this patch will eliminate the memory leak vulnerability. [1]