CVE-2025-9714
Publication date 4 September 2025
Last updated 12 September 2025
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libxml2 | 25.04 plucky |
Fixed 2.12.7+dfsg+really2.9.14-0.4ubuntu0.3
|
| 24.04 LTS noble |
Fixed 2.9.14+dfsg-1.3ubuntu3.5
|
|
| 22.04 LTS jammy |
Fixed 2.9.13+dfsg-1ubuntu0.9
|
|
| 20.04 LTS focal |
Fixed 2.9.10+dfsg-5ubuntu0.20.04.10+esm2
|
|
| 18.04 LTS bionic |
Fixed 2.9.4+dfsg1-6.1ubuntu1.9+esm5
|
|
| 16.04 LTS xenial |
Fixed 2.9.3+dfsg1-1ubuntu0.7+esm10
|
|
| 14.04 LTS trusty |
Fixed 2.9.1+dfsg1-3ubuntu4.13+esm9
|
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Get Ubuntu Pro 30-day free trialSeverity score breakdown
| Parameter | Value |
|---|---|
| Base score |
6.2 · Medium
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-7743-1
- libxml2 vulnerability
- 10 September 2025