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CVE-2023-45667 Details

Description

stb_image is a single file MIT licensed library for processing images. If `stbi__load_gif_main` in `stbi_load_gif_from_memory` fails it returns a null pointer and may keep the `z` variable uninitialized. In case the caller also sets the flip vertically flag, it continues and calls `stbi__vertical_flip_slices` with the null pointer result value and the uninitialized `z` value. This may result in a program crash.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CNA: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L1442-L1454	CVE	Third Party Advisory
https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L1448	CVE	Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/NMXKOKPP4BKTNUTF5KSRDQAWOUILQZNO/	CVE
https://lists.fedoraproject.org/archives/list/[email protected]/message/QVABVF4GEM6BYD5L4L64RCRSXUHY6LGN/	CVE
https://lists.fedoraproject.org/archives/list/[email protected]/message/UVQ7ONFH5GWLMXYEAJG32A3EUKUCEVCR/	CVE
https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/	CVE	Third Party Advisory
https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L1442-L1454	[email protected]	Third Party Advisory
https://github.com/nothings/stb/blob/5736b15f7ea0ffb08dd38af21067c314d6a3aae9/stb_image.h#L1448	[email protected]	Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/NMXKOKPP4BKTNUTF5KSRDQAWOUILQZNO/	[email protected]
https://lists.fedoraproject.org/archives/list/[email protected]/message/QVABVF4GEM6BYD5L4L64RCRSXUHY6LGN/	[email protected]
https://lists.fedoraproject.org/archives/list/[email protected]/message/UVQ7ONFH5GWLMXYEAJG32A3EUKUCEVCR/	[email protected]
https://securitylab.github.com/advisories/GHSL-2023-145_GHSL-2023-151_stb_image_h/	[email protected]	Third Party Advisory

see all 12 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-476	NULL Pointer Dereference	[email protected]
CWE-476	NULL Pointer Dereference	[email protected]

Affected Products

Product	Versions
nothings stb image.h	2.28
CPE cpe:2.3:a:nothings:stb_image.h:2.28:::::::* Remediation No remediation found in references.

Change History

7 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 4, 2023	CVE Modified	[email protected]
Nov 3, 2023	CVE Modified	[email protected]
Oct 27, 2023	Initial Analysis	[email protected]