CVE-2023-45667CWE-476

Null pointer dereference because of an uninitialized variable in stb_image

Medium · published October 20, 2023

CVSS v3.1
5.3
EPSS
1%
Percentile
69.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.01269 · 69.6th percentile
Weakness
CWE-476 · NULL Pointer Dereference
Published
2023-10-20T23:26Z
EPSS history
Timeline
  • 20 OCT 23:26Z
    Null pointer dereference because of an uninitialized variable in stb_image
    cvelistv5