4 commits

Author	SHA1	Message	Date
Pierre Bourdon	36bc90e8aa	blurhash_transcoder: prevent out-of-bound reads with <8bpp images (#20388) ... The Blurhash library used by Mastodon requires an input encoded as 24 bits raw RGB data. The conversion to raw RGB using Imagemagick did not previously specify the desired bit depth. In some situations, this leads Imagemagick to output in a pixel format using less bpp than expected. This then manifested as segfaults of the Sidekiq process due to out-of-bounds read, or potentially a (highly noisy) memory infoleak. Fixes #19235.	2022-11-11 07:45:16 +01:00
ThibG	346d9b3d2e	Add blurhash to preview cards (#13984) ... Fixes #13001	2020-06-05 23:10:41 +02:00
ThibG	10f1450bba	Fix ruby 2.7 warnings about keyword parameters (#12824)	2020-01-11 21:38:02 +01:00
Eugen Rochko	fba96c808d	Add blurhash (#10630) ... * Add blurhash * Use fallback color for spoiler when blurhash missing * Federate the blurhash and accept it as long as it's at most 5x5 * Display unknown media attachments as blurhash placeholders * Improve style of embed actions and spoiler button * Change blurhash resolution from 3x3 to 4x4 * Improve dependency definitions * Fix code style issues	2019-04-27 03:24:09 +02:00