xf86-video-mga: Changes to 'master'

[GitLab Mirror]

 src/mga_dacG.c |    1 +
 1 file changed, 1 insertion(+)

New commits:
commit 638653561df767b052e372821ffd51c457591202
Author: Raphael Isemann <teemperor at gmail.com>
Date:   Wed Apr 13 12:14:46 2022 +0200

    Fix uninitialized read in MGAEnableSecondOutPut
    
    `MGAGRestore` allocated `ModeInfo` without initializing its memory and then
    passes it into `MGAEnableSecondOutPut` via `MGAEnableSecondOutPut(pScrn, &ModeInfo);`.
    
    `MGAEnableSecondOutPut` then reads the unitialized memory in the line
    `if ( !(pModeInfo->flSignalMode & POS_HSYNC) )`.
    
    This patch just zeroes the memory to prevent those branches to be randomly
    taken.
    
    Signed-off-by: Raphael Isemann <teemperor at gmail.com>