CVE catalog
CVE-2026-89266
stb_vorbis through 1.22 contains a heap buffer overflow in start_decoder() where the codebook multiplicands allocation size is truncated from size_t to int. Attackers can craft a malicious Ogg Vorbis
- Severity
- High · CVSS 8.8
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.64% · Oct 25, 2026
stb_vorbis through 1.22 contains a heap buffer overflow in start_decoder() where the codebook multiplicands allocation size is truncated from size_t to int. Attackers can craft a malicious Ogg Vorbis file with large entries and dimensions values to trigger out-of-bounds writes, causing process crashes or heap corruption.
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 | [1147728] |
| Debian | libstb | source | forky | (unfixed) | not yet assigned | Not reported | [1147728] |
| Debian | libstb | source | trixie | (unfixed) | not yet assigned | Not reported | [1147728] |
| Debian | libstb | source | bookworm | (unfixed) | not yet assigned | Not reported | [1147728] |
Notes
[trixie] libstb: Minor issue [bookworm] libstb: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [libstb0]Affected
Source package: [libstb]
Details (2)
0.0~git20220908.8b5f1f3+ds-1· amd64 · bookwormAffected
nvd · libstb · debian · bookworm; nvd · libstb · debian · 12
0.0~git20220908.8b5f1f3+ds-1· arm64 · bookwormAffected
nvd · libstb · debian · bookworm; nvd · libstb · debian · 12
- [libstb-dev]Affected
Source package: [libstb]
Details (2)
0.0~git20220908.8b5f1f3+ds-1· amd64 · bookwormAffected
nvd · libstb · debian · bookworm; nvd · libstb · debian · 12
0.0~git20220908.8b5f1f3+ds-1· arm64 · bookwormAffected
nvd · libstb · debian · bookworm; nvd · libstb · debian · 12
[Debian 13 (Trixie)]
- [libstb0t64]Affected
Source package: [libstb]
Details (2)
0.0~git20241109.5c20573+ds-1· amd64 · trixieAffected
nvd · libstb · debian · 13
0.0~git20241109.5c20573+ds-1· arm64 · trixieAffected
nvd · libstb · debian · 13
- [libstb-dev]Affected
Source package: [libstb]
Details (2)
0.0~git20241109.5c20573+ds-1· amd64 · trixieAffected
nvd · libstb · debian · 13
0.0~git20241109.5c20573+ds-1· arm64 · trixieAffected
nvd · libstb · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-89266]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-89266]
- [https://security-tracker.debian.org/tracker/CVE-2026-89266]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89266.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]