UBUNTU-CVE-2026-120245

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UBUNTU-CVE-2026-120245

Summary:

Details: FFmpeg 0.10 through 9.0.2 contains a use of uninitialized resource vulnerability in sunrast_decode_frame() that leaks heap memory when decoding truncated 1-bit and 4-bit paletted Sun Raster images. Attackers can craft a truncated Sun Raster file so the uncleared temporary bitmap is expanded into PAL8 pixels, exposing stale heap contents such as allocator words in decoded output.

References: https://ubuntu.com/security/CVE-2026-120245, https://www.cve.org/CVERecord?id=CVE-2026-120245, https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24877, https://github.com/FFmpeg/FFmpeg, https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/sunrast.c#L188-L194, https://github.com/FFmpeg/FFmpeg/commit/356a391bf57df2fb80fd61f2821c8c83d15ce180, https://github.com/FFmpeg/FFmpeg/commit/66b6ca270b33fd74367d7d371f6de16ec664446e, https://www.vulncheck.com/advisories/ffmpeg-0.10-through-9.0.2-uninitialized-memory-disclosure-via-sun-raster-decoder