CVE-2025-13601
Publication date 26 November 2025
Last updated 6 January 2026
Ubuntu priority
Description
A heap-based buffer overflow problem was found in glib through an incorrect calculation of buffer size in the g_escape_uri_string() function. If the string to escape contains a very large number of unacceptable characters (which would need escaping), the calculation of the length of the escaped string could overflow, leading to a potential write off the end of the newly allocated string.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| glib2.0 | 25.10 questing |
Fixed 2.86.0-2ubuntu0.1
|
| 25.04 plucky |
Fixed 2.84.1-1ubuntu0.2
|
|
| 24.04 LTS noble |
Fixed 2.80.0-6ubuntu3.6
|
|
| 22.04 LTS jammy |
Fixed 2.72.4-0ubuntu2.7
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| 14.04 LTS trusty |
Needs evaluation
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.7 · High
|
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-7942-1
- GLib vulnerabilities
- 6 January 2026