CVE-2026-120246 | CVSS: 5.5 | 严重级别: MEDIUM
FFmpeg 4.4 through 9.0.2 contains a use of uninitialized variable vulnerability in the CDXL decoder that leaks stack memory into decoded pixels via unfilled HAM palette entries. Attackers can craft a type-0 CDXL file whose HAM pixels select unfilled new_palette entries in cdxl_decode_ham8() or cdxl_decode_ham6(), exposing stack bytes and pointer fragments in the BGR24 output.
参考链接:
• https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24856
• https://github.com/FFmpeg/FFmpeg
• https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/cdxl.c#L226-L229
📌 数据来源: NVD 官方
⚠️ 合规声明: 本文内容仅用于网络安全合规学习、科研与授权测试用途。严禁用于任何未授权行为,违者自行承担全部法律责任。