NULL Pointer Dereference Affecting stb package, versions <0_git20231012-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.17% (56th percentile)

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  • Snyk IDSNYK-ALPINE321-STB-8489485
  • published6 Dec 2024
  • disclosed21 Oct 2023

Introduced: 21 Oct 2023

CVE-2023-45667  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Alpine:3.21 stb to version 0_git20231012-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream stb package and not the stb package as distributed by Alpine. See How to fix? for Alpine:3.21 relevant fixed versions and status.

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.

CVSS Scores

version 3.1