CVE-2021-46829
No exploitation reported by the sources we read.
- Published2022-07-24
- WeaknessCWE-190
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
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.
Timeline
dates in UTC- 2022-07-2419:15CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-46829?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-46829?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 11.0 | = 11.0 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 35.x | = 35 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.42 | < 2.42.8 | 2.42.8 | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- gdk-pixbuf2AlmaLinux:9all versions · fixed in 2.42.6-3.el9and 2 other packages
Vendor advisories
gdk-pixbuf: heap-based buffer overflow when compositing or clearing frames in GIF files
Red Hat Security Advisory: gdk-pixbuf2 security update
Fix
- Vendor fix Red Hat Product Security RHSA-2023:2216 · 41 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Advisories and patches
- gitlab.gnome.orgPatch
- gitlab.gnome.orgPatch
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.17.8read 2026-10-23
- NVDweakness (CWE)CWE-190read 2026-10-23
- FIRST EPSSEPSS score0.8 %2026-10-23
- OSVaffected packages—
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Published
- 2022-07-24
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2021-46829?
Is CVE-2021-46829 actively exploited?
What is the CVSS score for CVE-2021-46829?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.