CVE-2025-4373
Publication date 6 May 2025
Last updated 3 July 2025
Ubuntu priority
Description
A flaw was found in GLib, which is vulnerable to an integer overflow in the g_string_insert_unichar() function. When the position at which to insert the character is large, the position will overflow, leading to a buffer underwrite.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| glib2.0 | 25.10 questing |
Not affected
|
| 25.04 plucky |
Fixed 2.84.1-1ubuntu0.1
|
|
| 24.04 LTS noble |
Fixed 2.80.0-6ubuntu3.4
|
|
| 22.04 LTS jammy |
Fixed 2.72.4-0ubuntu2.5
|
|
| 20.04 LTS focal |
Fixed 2.64.6-1~ubuntu20.04.9
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
|
| 14.04 LTS trusty |
Needs evaluation
|
Patch details
| Package | Patch details |
|---|---|
| glib2.0 |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
4.8 · Medium
|
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | Low |
| Availability impact | Low |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L |
References
Related Ubuntu Security Notices (USN)
- USN-7532-1
- GLib vulnerability
- 26 May 2025
Other references
- https://www.cve.org/CVERecord?id=CVE-2025-4373
- https://gitlab.gnome.org/GNOME/glib/-/issues/3677
- https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4588
- https://gitlab.gnome.org/GNOME/glib/-/merge_requests/4592
- https://access.redhat.com/security/cve/CVE-2025-4373
- https://bugzilla.redhat.com/show_bug.cgi?id=2364265