CVE-2026-23868

Publication date 10 March 2026

Last updated 23 April 2026

Ubuntu priority

Cvss 3 Severity Score

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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
giflib	25.10 questing	Vulnerable
	24.04 LTS noble	Vulnerable
	22.04 LTS jammy	Vulnerable
	20.04 LTS focal	Vulnerable
	18.04 LTS bionic	Vulnerable
	16.04 LTS xenial	Vulnerable

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
giflib	Upstream: https://sourceforge.net/p/giflib/code/ci/f5b7267aed3665ef025c13823e454170d031c106/tree/gifalloc.c?diff=5146815377b7395944cb683a08c43eee3f631eb7

Severity score breakdown

Parameter	Value
Base score	5.1 · Medium
Attack vector	Local
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Other references

https://www.cve.org/CVERecord?id=CVE-2026-23868