CVE catalog
CVE-2023-45675
libstb: CVE-2023-45675
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.74% · Oct 25, 2026
stb_vorbis is a single file MIT licensed library for processing ogg vorbis files. A crafted file may trigger out of bounds write in `f->vendor[len] = (char)'\0';`. The root cause is that if the len read in `start_decoder` is `-1` and `len + 1` becomes 0 when passed to `setup_malloc`. The `setup_malloc` behaves differently when `f->alloc.alloc_buffer` is pre-allocated. Instead of returning `NULL` as in `malloc` case it shifts the pre-allocated buffer by zero and returns the currently available memory block. This issue may lead to code execution.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | libstb | sid | 0.0~git20250907.fede005+ds-1 | vulnerable |
| Debian | libstb | forky | 0.0~git20250907.fede005+ds-1 | vulnerable |
| Debian | libstb | trixie | 0.0~git20241109.5c20573+ds-1 | vulnerable |
| Debian | libstb | bookworm | 0.0~git20220908.8b5f1f3+ds-1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | libstb | source | sid | (unfixed) | not yet assigned | Not reported | [1054911] |
| Debian | libstb | source | forky | (unfixed) | not yet assigned | Not reported | [1054911] |
| Debian | libstb | source | trixie | (unfixed) | not yet assigned | Not reported | [1054911] |
| Debian | libstb | source | bookworm | (unfixed) | not yet assigned | Not reported | [1054911] |
Notes
[trixie] libstb: Minor issue, revisit when fixed upstream [bookworm] libstb: Minor issue, revisit when fixed upstream
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.