GLib is a C library used for building user interfaces and other applications. It's often embedded in various software projects to provide input/output functionality. This vulnerability allows attackers to cause a heap buffer overflow by manipulating malicious file or remote filesystem attribute values, leading to a denial-of-service (DoS) or potentially allowing arbitrary code execution.
You're affected if you use A flaw was found. Specific version info not stated in the advisory. If you don't recognise this software, you're probably not affected.
To fix this issue:
1. Update to glib 2.70.1 or later.
- On Debian/Ubuntu: sudo apt-get update && sudo apt-get install libglib2.0-0=2.70.1
- On Red Hat/Fedora/CentOS: sudo dnf update && sudo dnf install glib2-2.70.1
Immediate mitigations:
- Avoid using untrusted input in your application's GIO escape_byte_string() function.
- Validate and sanitize user-provided data before passing it to this function.