CVE-2025-6199 Gdk-pixbuf: uninitialized memory disclosure in gdkpixbuf gif lzw decoder

What is CVE-2025-6199?

CVE-2025-6199 is a low-severity vulnerability in Red Hat Enterprise Linux 10, published on 17 Jun 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A flaw was found in the GIF parser of GdkPixbuf’s LZW decoder. When an invalid symbol is encountered during decompression, the decoder sets the reported output size to the full buffer length rather than the actual number of written bytes. This logic error results in uninitialized sections of the buffer being included in the output, potentially leaking arbitrary memory contents in the processed image.

Weakness: CWE-200

Which versions are affected by CVE-2025-6199?

It affects 1 product.

Products include Gnome Gdkpixbuf.

How do I fix CVE-2025-6199?

Apply the vendor's patch.

Is CVE-2025-6199 being exploited?

There is no known exploitation of CVE-2025-6199 in the wild and no public exploit code.

Other vulnerabilities in Red Hat Enterprise Linux 10

• CVE-2022-48622 Memory corruption in n/a High 7.8
• CVE-2005-2975 Denial of service in n/a High 7.8
• CVE-2005-2976 Integer overflow in n/a High 7.5
• CVE-2005-3186 Integer overflow in n/a High 7.5
• CVE-2004-0782 Integer overflow in n/a High 7.5

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-64077, AZL-64079, DEBIAN-CVE-2025-6199, DLA-4225-1, DSA-5946-1, GHSA-h3qh-mvr3-r7x7 and 4 more.