What is CVE-2021-46829?

CVE-2021-46829 is a high-severity vulnerability in GNOME Gdk-Pixbuf, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2022-07-24.

How severe is CVE-2021-46829?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2021-46829 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Integer overflow in GNOME Gdk-Pixbuf

CVE-2021-46829

GNOME GdkPixbuf (aka GDK-PixBuf) before 2.42.8 allows a heap-based buffer overflow when compositing or clearing frames in GIF files, as demonstrated by io-gif-animation.c composite_frame. This overflow is controllable and could be abused for code execution, especially on 32-bit systems.

Vulnerability class: Integer Overflow

Published 2022-07-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (56.2th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

GNOME Gdk-Pixbuf
Debian Linux — versions 11.0
Fedoraproject Fedora — versions 35

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/190 (Exploit, Third Party Advisory, Issue Tracking)
gitlab.gnome.org/GNOME/gdk-pixbuf/-/merge_requests/121 (Exploit, Third Party Advisory)
gitlab.gnome.org/GNOME/gdk-pixbuf/-/commit/bca00032ad68d0b0aa2c1f7558db931e52bd… (Patch, Third Party Advisory)
gitlab.gnome.org/GNOME/gdk-pixbuf/-/commit/5398f04d772f7f8baf5265715696ed88db0f… (Patch, Third Party Advisory)
www.openwall.com/lists/oss-security/2022/07/23/1 (Mailing List, Third Party Advisory)
www.openwall.com/lists/oss-security/2022/07/25/1 (mailing-list, Mailing List, Third Party Advisory)
github.com/pedrib/PoC/blob/master/fuzzing/CVE-2021-46829/CVE-2021-46829.md (Exploit, Third Party Advisory)
lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
www.debian.org/security/2022/dsa-5228 (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2021-46829?: CVE-2021-46829 is a high-severity vulnerability in GNOME Gdk-Pixbuf, classified under Integer Overflow or Wraparound. CVSS score: 7.8/10. Published 2022-07-24.
How severe is CVE-2021-46829?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2021-46829 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.