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.
Affected products
gnome: gdkpixbuf; redhat: enterprise linux
References4
- access.redhat.com/security/cve/CVE-2025-6199 Third Party Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2373147 Issue TrackingThird Party Advisory
- gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/257
- lists.debian.org/debian-lts-announce/2025/06/msg00023.html
Metrics
- CVSS 3.1
-
3.3
LOW
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N - EPSS — exploit probability
- 0% percentile: 11 · as of 7 November 2026
- CWE
- CWE-200
Could this be exploited in your environment?
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