CVE-2026-89266
Description
A flaw was found in stb_vorbis, an open-source library for Ogg Vorbis decoding. This vulnerability, a heap buffer overflow, occurs in the start_decoder() function due to an integer truncation error when allocating memory for codebook multiplicands. A remote attacker could exploit this by crafting a specially malformed Ogg Vorbis file. Successful exploitation could lead to out-of-bounds writes, causing the application to crash or corrupt memory, resulting in a Denial of Service (DoS).
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Mitigation
To mitigate this issue, users should avoid processing Ogg Vorbis files from untrusted sources. Additionally, applications that utilize `stb_vorbis` to decode Ogg Vorbis content, especially when handling untrusted input, should be run within a sandboxed environment to limit the potential impact of a successful exploit.
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Memory; Execute Unauthorized Code or Commands
Write operations could cause memory corruption. In some cases, an adversary can modify control data such as return addresses in order to execute unexpected code.
Availability
Technical Impact: DoS: Crash, Exit, or Restart
Attempting to access out-of-range, invalid, or unauthorized memory could cause the product to crash.
Other
Technical Impact: Unexpected State
Subsequent write operations can produce undefined or unexpected results.
Frequently Asked Questions
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