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Fencer Vulns
low 3.3

CVE-2025-6199 json

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

published 2025-06-17 16 mo ago modified 2026-11-06 2 d ago also EUVD-2025-18505

cvss
3.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 10%
public exploits
0
none known

Summary

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.

Patch / fix

  • gdk-pixbuf Debian 12 2.42.10+dfsg-1+deb12u2
  • gdk-pixbuf Debian 14, Debian 13 2.42.12+dfsg-3

debian advisories DEBIAN-CVE-2025-6199

  • gdk-pixbuf Ubuntu 22.04 LTS 2.42.8+dfsg-1ubuntu0.4
  • gdk-pixbuf Ubuntu 24.04 LTS 2.42.10+dfsg-3ubuntu3.2
  • gdk-pixbuf Ubuntu 25.10 2.42.12+dfsg-4build1
  • gdk-pixbuf Ubuntu Pro 16.04 LTS 2.32.2-1ubuntu1.6+esm2
  • gdk-pixbuf Ubuntu Pro 18.04 LTS 2.36.11-2ubuntu0.1~esm2
  • gdk-pixbuf Ubuntu Pro 20.04 LTS 2.40.0+dfsg-3ubuntu0.5+esm1

ubuntu advisories UBUNTU-CVE-2025-6199

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • gdk-pixbuf SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 2.42.12-160000.3.1
  • gdk-pixbuf SLES for SAP 15 SP3, SLES 15 SP3-LTSS, SLE Micro 5.2 +2 more 2.40.0-150200.3.15.2
  • gdk-pixbuf Linux Micro 6.1 2.42.12-slfo.1.1_2.1
  • gdk-pixbuf Linux Micro 6.0 2.42.12-3.1
  • gdk-pixbuf SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +10 more 2.42.12-150400.5.14.1
  • gdk-pixbuf SLE Module for Basesystem 15 SP7, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 2.42.12-150600.3.8.1

suse advisories SUSE-SU-2026:20128-1SUSE-SU-2026:20156-1SUSE-SU-2025:03373-1SUSE-SU-2025:20748-1SUSE-SU-2025:20694-1SUSE-SU-2025:02963-1

  • gdk-pixbuf openSUSE Leap 16.0 2.42.12-160000.3.1
  • gdk-pixbuf openSUSE Tumbleweed 2.42.12-4.1

opensuse advisories openSUSE-SU-2026:20084-1openSUSE-SU-2025:15397-1

  • gdk-pixbuf2 CBL-Mariner 2.0 2.40.0-8
  • gdk-pixbuf2 Azure Linux 3.0 2.42.10-4

azure linux advisories AZL-64077AZL-64079

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-6199 updated cvss 3.3

gdk-pixbuf: Uninitialized Memory Disclosure in GdkPixbuf GIF LZW Decoder

  • Red Hat Enterprise Linux 6 gdk-pixbuf2
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 gdk-pixbuf2, gdk-pixbuf2-tests Red Hat Enterprise Linux 8 gdk-pixbuf2, gdk-pixbuf2-xlib, gdk-pixbuf2-modules Red Hat Enterprise Linux 9 librsvg2, gdk-pixbuf2, librsvg2-tools, gdk-pixbuf2-modules Red Hat Enterprise Linux 10 loupe, snapshot, gdk-pixbuf2, glycin-loaders
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
16 mo ago

Exploit prediction

0.21% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
NVD 3.1 3.3 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.