A flaw exists in gdk‑pixbuf within the gdk_pixbuf__jpeg_image_load_increment function (io-jpeg.c) and in glib’s g_base64_encode_step (glib/gbase64.c). When processing maliciously crafted JPEG images, a heap buffer overflow can occur during Base64 encoding, allowing out-of-bounds reads from heap memory, potentially causing application crashes or arbitrary code execution.
https://access.redhat.com/errata/RHSA-2025:14683
https://access.redhat.com/errata/RHSA-2025:14647
https://access.redhat.com/errata/RHSA-2025:14646
https://access.redhat.com/errata/RHSA-2025:14618
https://access.redhat.com/errata/RHSA-2025:14585
https://access.redhat.com/errata/RHSA-2025:14576
https://access.redhat.com/errata/RHSA-2025:14575
https://access.redhat.com/errata/RHSA-2025:14574
https://access.redhat.com/errata/RHSA-2025:13315