Bug 1216695 (CVE-2023-46407) - VUL-0: CVE-2023-46407: ffmpeg,ffmpeg-4: out of bounds read via the dist->alphabet_size variable in the read_vlc_prefix() function.
Summary: VUL-0: CVE-2023-46407: ffmpeg,ffmpeg-4: out of bounds read via the dist->alph...
Status: RESOLVED UPSTREAM
Alias: CVE-2023-46407
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P5 - None : Normal
Target Milestone: ---
Assignee: Security Team bot
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/383350/
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Reported: 2023-10-30 08:40 UTC by SMASH SMASH
Modified: 2023-10-30 08:42 UTC (History)
1 user (show)

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Found By: Security Response Team
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Description SMASH SMASH 2023-10-30 08:40:28 UTC 
FFmpeg prior to commit bf814 was discovered to contain an out of bounds read via the dist->alphabet_size variable in the read_vlc_prefix() function.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-46407
Comment 1 Gabriele Sonnu 2023-10-30 08:42:05 UTC 
This is in the jpegxl parser recently added in the upstream repository and never included in any of ffmpeg releases.
Since we don't ship it anywhere, closing this bug.