CVE-2023-45667— Null pointer dereference because of an uninitialized variable in stb_image
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I. Basic Information for CVE-2023-45667
Vulnerability Information
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Vulnerability Title
Null pointer dereference because of an uninitialized variable in stb_image
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
空指针解引用
Source: NVD (National Vulnerability Database)
Vulnerability Title
stb_image 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
stb是一款用于C/C ++的单文件公共域库。 stb_image 存在安全漏洞，该漏洞源于可能会导致程序崩溃。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-45667
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Same Patch Batch · nothings · 2023-10-20 · 14 CVEs total
| CVE-2023-45681 | 7.3 HIGH | Out of bounds heap buffer write in stb_vorbis |
| CVE-2023-45679 | 7.3 HIGH | Attempt to free an uninitialized memory pointer in vorbis_deinit in stb_vorbis |
| CVE-2023-45677 | 7.3 HIGH | Heap buffer out of bounds write in start_decoder in stb_vorbis |
| CVE-2023-45676 | 7.3 HIGH | Multi-byte write heap buffer overflow in start_decoder in stb_vorbis |
| CVE-2023-45666 | 7.3 HIGH | Possible double-free or memory leak in stbi__load_gif_main in stb_image |
| CVE-2023-45664 | 7.3 HIGH | Double-free in stbi__load_gif_main_outofmem in stb_image |
| CVE-2023-45678 | 6.5 MEDIUM | Off-by-one heap buffer write in start_decoder in stb_vorbis |
| CVE-2023-45675 | 6.5 MEDIUM | 0 byte write heap buffer overflow in start_decoder in stb_vorbis |
| CVE-2023-45662 | 6.5 MEDIUM | Multi-byte read heap buffer overflow in stbi__vertical_flip in stb_image |
| CVE-2023-45661 | 6.5 MEDIUM | Wild address read in stbi__gif_load_next in stb_image |
| CVE-2023-45682 | 5.3 MEDIUM | Wild address read in vorbis_decode_packet_rest in stb_vorbis |
| CVE-2023-45680 | 5.3 MEDIUM | Null pointer dereference in vorbis_deinit in stb_vorbis |
| CVE-2023-45663 | 5.3 MEDIUM | Disclosure of uninitialized memory in stbi__tga_load in stb_image |
IV. Related Vulnerabilities
Same product: stb
- CVE-2026-5317
Nothings stb stb_vorbis.c start_decoder out-of-bounds write - CVE-2026-5316
Nothings stb stb_vorbis.c setup_free allocation of resources - CVE-2026-5315
Nothings stb TTF File stb_truetype.h stbtt__buf_get8 out-of- - CVE-2026-5314
Nothings stb TTF File stb_truetype.h stbtt_InitFont_internal - CVE-2026-5313
Nothings stb GIF Decoder stb_image.h stbi__gif_load_next den
Same vendor: nothings
- CVE-2026-5317
Nothings stb stb_vorbis.c start_decoder out-of-bounds write - CVE-2026-5316
Nothings stb stb_vorbis.c setup_free allocation of resources - CVE-2026-5315
Nothings stb TTF File stb_truetype.h stbtt__buf_get8 out-of- - CVE-2026-5314
Nothings stb TTF File stb_truetype.h stbtt_InitFont_internal - CVE-2026-5313
Nothings stb GIF Decoder stb_image.h stbi__gif_load_next den
Same weakness: CWE-476
- CVE-2026-8252
Open5GS SMF smf_nsmf_handle_create_data_in_hsmf null pointer - CVE-2026-7259
Null pointer dereference in php_mb_check_encoding() via mb_e - CVE-2026-7262
NULL pointer dereference in SOAP apache:Map decoder with mis - CVE-2026-42183
Argo Workflows: SSO RBAC Delegation Nil Pointer Dereference - CVE-2026-6666
PgBouncer crash in kill_pool_logins_server_error
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