Disclosure summary
Giflib contains a double-free vulnerability that is the result of a shallow copy in GifMakeSavedImage and incorrect error handling. The conditions needed to trigger this vulnerability are difficult but may be possible.
Source-reported weakness categories
CWE-415
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2026-Mar
Open original source · Updated Mar 26, 2026
Giflib contains a double-free vulnerability that is the result of a shallow copy in GifMakeSavedImage and incorrect error handling. The conditions needed to trigger this vulnerability are difficult but may be possible.
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 7
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | azl3 giflib 5.2.1-10 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 giflib 5.2.1-10 on CBL Mariner 2.0 | (MSRC status code 3) |
Vendor remediation references
- CBL-Mariner Releases · build 5.2.1-11 · product IDs 19085-17084, 20204-17086
- Vendor guidance · product IDs 19085-17084, 20204-17086
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2026-03-11T21:01:31-04:00
MODIFIED 2026-03-26T21:39:41-04:00
INGESTED 2026-10-08T12:45:09-04:00