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Description

Uncontrolled recursion in XPath evaluation in libxml2 up to and including version 2.9.14 allows a local attacker to cause a stack overflow via crafted expressions. XPath processing functions `xmlXPathRunEval`, `xmlXPathCtxtCompile`, and `xmlXPathEvalExpr` were resetting recursion depth to zero before making potentially recursive calls. When such functions were called recursively this could allow for uncontrolled recursion and lead to a stack overflow. These functions now preserve recursion depth across recursive calls, allowing recursion depth to be controlled.

PUBLISHED Reserved 2025-08-29 | Published 2025-09-10 | Updated 2025-09-10 | Assigner canonical




MEDIUM: 6.2CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-674 Uncontrolled Recursion

Product status

Default status
unaffected

Any version before 2.10.0
affected

Any version before 2.12.7+dfsg+really2.9.14-0.4ubuntu0.3
affected

Any version before 2.9.14+dfsg-1.3ubuntu3.5
affected

Any version before 2.9.13+dfsg-1ubuntu0.9
affected

Any version before 2.9.10+dfsg-5ubuntu0.20.04.10+esm2
affected

Any version before 2.9.4+dfsg1-6.1ubuntu1.9+esm5
affected

Any version before 2.9.3+dfsg1-1ubuntu0.7+esm10
affected

Any version before 2.9.1+dfsg1-3ubuntu4.13+esm9
affected

Credits

Nikita Sveshnikov (Positive Technologies) reporter

References

gitlab.gnome.org/...677a42645ef22b5a50741bad5facf9d8a8bc6d21 patch

cve.org (CVE-2025-9714)

nvd.nist.gov (CVE-2025-9714)

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