CVE-2026-23868
Modified Modified - Updated After Analysis

Double-Free Vulnerability in Giflib's GifMakeSavedImage Component

Publication date: 2026-03-10

Last updated on: 2026-06-30

Assigner: Facebook, Inc.

Description
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.

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Meta Information

Published
2026-03-10
Last Modified
2026-06-30
Generated
2026-07-07
AI Q&A
2026-03-10
EPSS Evaluated
2026-07-05
NVD
CVE-2026-23868
EUVD
EUVD-2026-10794

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
giflib_project giflib From 5.0.0 (inc) to 6.1.1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-415 The product calls free() twice on the same memory address.
CWE-825 The product dereferences a pointer that contains a location for memory that was previously valid, but is no longer valid.

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Executive Summary

This vulnerability in Giflib is a double-free issue caused by a shallow copy operation in the function GifMakeSavedImage combined with incorrect error handling.

A double-free vulnerability occurs when a program attempts to free the same memory location twice, which can lead to undefined behavior or exploitation.

The conditions required to trigger this vulnerability are difficult to meet but may be possible.

Impact Analysis

Exploitation of a double-free vulnerability can lead to program crashes, memory corruption, or potentially allow an attacker to execute arbitrary code.

However, since the conditions to trigger this vulnerability are difficult, the risk may be limited but should not be ignored.

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