Moderate Security Update for libxml2: Out-of-Bounds Read Vulnerabilities
Summary
ALSA-2025:13428: Moderate: libxml2 security update. Affects libxml2 versions < 2.9.13-12.el9_6. Fixed in 2.9.13-12.el9_6. How to fix ↓
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Background
libxml2 is a widely used development toolbox that implements various XML standards, providing essential functionalities for parsing and manipulating XML documents. It is integral to many applications and libraries that rely on XML processing. However, vulnerabilities in libxml2 can lead to severe security risks, including potential data leaks or application crashes, making it crucial to maintain updated versions.
Vulnerability Detail
The libxml2 library has been identified to contain out-of-bounds read vulnerabilities, specifically CVE-2025-32414 and CVE-2025-32415. These vulnerabilities arise from improper handling of XML data, which can allow attackers to exploit the library's functionality, potentially leading to unauthorized access to sensitive information or application instability. The vulnerabilities were introduced in earlier versions and have been addressed in the latest updates.
How To Fix
Minimum fixed version
2.9.13-12.el9_6
This is the first release that contains the fix.
sudo dnf update libxml2Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If immediate updating is not feasible, consider implementing input validation to sanitize XML data before processing it with libxml2. This can help mitigate the risk of exploitation until the library can be updated.
Conclusion
The libxml2 library has critical vulnerabilities that need to be addressed promptly. Updating to the latest patched version is essential to maintain the security and stability of applications that depend on this library. Regular monitoring and validation practices can further enhance security.
See every vulnerability recorded for libxml2 →
FAQ
The vulnerabilities include CVE-2025-32414, which involves an out-of-bounds read, and CVE-2025-32415, which relates to out-of-bounds reads in xmlSchemaIDCFillNodeTables.
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Exploiting these vulnerabilities can lead to unauthorized data access, application crashes, or other security breaches, posing significant risks to applications relying on libxml2.
Yes, implementing input validation to sanitize XML data can help reduce the risk of exploitation until the library is updated.
It is recommended to regularly check for updates and security advisories for all libraries, especially those handling sensitive data, to ensure you are protected against known vulnerabilities.
Related vulnerabilities
Recent vulnerabilities recorded for libxml2.
