GdkPixbuf GIF LZW Decoder Uninitialized Buffer Leak
CVE-2025-6199 Published on June 17, 2025
Gdk-pixbuf: uninitialized memory disclosure in gdkpixbuf gif lzw decoder
A flaw was found in the GIF parser of GdkPixbufs 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.
Vulnerability Analysis
CVE-2025-6199 can be exploited with local system access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Timeline
Reported to Red Hat.
Made public.
Weakness Type
What is an Information Disclosure Vulnerability?
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CVE-2025-6199 has been classified to as an Information Disclosure vulnerability or weakness.
Products Associated with CVE-2025-6199
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Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.