漏洞信息
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Vulnerability Title
FFmpeg Integer Narrowing Conversion OOB Memory Access in AV1 RTP Packetizer
Vulnerability Description
FFmpeg before commit b4c199c contains an incorrect integer narrowing conversion in the AV1 RTP packetizer (libavformat/rtpenc_av1.c). The OBU size is cast to long before comparison against the remaining frame size. On targets where long is 32 bits, including 64-bit Windows, sufficiently large OBU size values are sign-flipped by the narrowing cast, producing a negative value that passes the payload size check. This allows an oversized OBU to bypass the safety bound on affected platforms, leading to out-of-bounds memory access when the oversized value is subsequently used as a copy length.
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H
Vulnerability Type
数值类型间的不正确转换
Vulnerability Title
FFmpeg 数字错误漏洞
Vulnerability Description
FFmpeg是FFmpeg组织开源的一个多媒体处理框架。 FFmpeg b4c199c之前版本存在数字错误漏洞,该漏洞源于AV1 RTP打包器中错误的整数窄化转换,可能导致越界内存访问。
CVSS Information
N/A
Vulnerability Type
N/A