CVE-2026-15588
Published: July 22, 2026Last modified: August 4, 2026
Description
A denial-of-service and resource exhaustion vulnerability exists within the `GDBus` component of GLib. The `gdbusauth` authentication mechanism fails to enforce proper length limitations on data lines read from a client. An unauthenticated local or remote attacker can exploit this lack of input validation by sending excessively long streams of data, causing the application to consume massive amounts of system memory and CPU, potentially leading to a crash or system hang.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.3 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | LOW |
| Integrity impact | LOW |
| Availability impact | LOW |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | glib | Fixed (2.74.7-r7) |
| 25 LTS | glib | Fixed (2.84.4-r4) | |
| Stream | glib | Fixed (2.88.3-r0) |
References
- https://access.redhat.com/errata/RHSA-2026:39985
- https://access.redhat.com/errata/RHSA-2026:40485
- https://access.redhat.com/errata/RHSA-2026:42329
- https://access.redhat.com/errata/RHSA-2026:55440
- https://access.redhat.com/security/cve/CVE-2026-15588
- https://bugzilla.redhat.com/show_bug.cgi?id=2499675
- https://gitlab.gnome.org/GNOME/glib/-/issues/3985