Junglewise Threat Intelligence

CVE-2025-7424: GNOME libxslt type confusion in xmlNode psvi field

CVE-2025-7424 · Severity: high · CVSS 7.5 · Published 2025-07-10

Technologies: Red Hat Enterprise Linux 10, Gnome Libxslt. Vendors: Red Hat, Gnome.

Executive brief

A vulnerability has been identified in libxslt, a widely used library for processing XML data. The flaw allows an attacker to cause applications using this library to crash or behave unpredictably by providing specially crafted XML files. This could lead to a denial of service, impacting the availability of services that rely on XML transformations.

Technical details

A type confusion vulnerability (CWE-843) exists in libxslt due to the reuse of the 'psvi' memory field in the xmlNode structure for both stylesheet and input data. During XML transformations, this overlap allows for incompatible type access. An unauthenticated remote attacker can exploit this by providing malicious XML input, leading to memory corruption or a denial of service (application crash). The issue is addressed in libxslt version 1.1.44 and various vendor-specific patches such as Red Hat Enterprise Linux 10.

Affected products

  • GNOME libxslt < 1.1.44
  • Red Hat Red Hat Enterprise Linux 10 libxslt < 1.1.39-8.el10_0

Timeline

  • 2025-07-10: disclosed
  • 2025-07-10: advisory
  • 2025-07-31: patched: Red Hat released bug fix advisory RHBA-2025:12345

References

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