CVE-2025-6199

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.

References

Affected packages

Debian:11 / gdk-pixbuf

Package

Name: gdk-pixbuf
Purl: pkg:deb/debian/gdk-pixbuf?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.42.2+dfsg-1+deb11u3

Affected versions

2.*

2.42.2+dfsg-1

2.42.2+dfsg-1+deb11u1

2.42.2+dfsg-1+deb11u2

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:12 / gdk-pixbuf

Package

Name: gdk-pixbuf
Purl: pkg:deb/debian/gdk-pixbuf?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.42.10+dfsg-1+deb12u2

Affected versions

2.*

2.42.10+dfsg-1

2.42.10+dfsg-1+deb12u1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Debian:13 / gdk-pixbuf

Package

Name: gdk-pixbuf
Purl: pkg:deb/debian/gdk-pixbuf?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.42.12+dfsg-3

Affected versions

2.*

2.42.10+dfsg-1

2.42.10+dfsg-2

2.42.10+dfsg-3

2.42.12+dfsg-1

2.42.12+dfsg-2

Ecosystem specific

{
    "urgency": "not yet assigned"
}