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.
https://access.redhat.com/errata/RHSA-2025:11374
https://access.redhat.com/errata/RHSA-2025:11373
https://access.redhat.com/errata/RHSA-2025:11327
https://access.redhat.com/errata/RHSA-2025:11140
https://access.redhat.com/errata/RHSA-2025:10855
https://www.cisa.gov/news-events/ics-advisories/icsa-25-162-05
https://bugzilla.redhat.com/show_bug.cgi?id=2364265
https://access.redhat.com/security/cve/CVE-2025-4373
Source: Mitre, NVD
Published: 2025-05-06
Updated: 2025-07-17
Base Score: 4
Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:P/A:P
Severity: Medium
Base Score: 4.8
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
EPSS: 0.00039