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Vulnerability DatabaseCVE-2021-33657
CVE-2021-33657:
Linux Debian vulnerability analysis and mitigation
Overview
CVE-2021-33657 affects SDL (Simple DirectMedia Layer) versions 2.x through 2.0.18. The vulnerability is a heap overflow problem located in the video/SDL_pixels.c component, specifically when processing malicious BMP files (NVD).
Technical details
The vulnerability stems from improper memory allocation in the SDL_pixels.c file. The issue was fixed by modifying the memory allocation strategy, changing from using SDL_malloc with src->ncolors to SDL_calloc with 256 entries to ensure sufficient space for color values that might be out of range (SDL Commit).
Impact
The vulnerability could allow an attacker to cause a denial of service or potentially execute arbitrary code when processing specially crafted files (Ubuntu Security).
Mitigation and workarounds
The vulnerability has been patched in various distributions. Ubuntu users should update to libsdl2-2.0-0 version 2.0.14+dfsg2-3ubuntu0.1 for Ubuntu 21.10, and corresponding versions for other releases (Ubuntu Security). Debian users should upgrade to fixed versions available in their respective repositories (Debian Security).
Additional resources
Source: This report was generated using AI
Related Linux Debian vulnerabilities:
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