mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-07 15:07:13 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/bridge/sii8620: fix potential buffer overflow

Browse Source 
Buffer overflow error should not occur, as mode_fixup() callback
filters pixel clock value and it should never exceed 600000. However,
current implementation is not obviously safe and relies on
implementation of mode_fixup().

Make 'i' variable never reach unsafe value in order to avoid buffer
overflow error.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: bf1722ca ("drm/bridge/sii8620: rewrite hdmi start sequence")
Signed-off-by: Maciej Purski <m.purski@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1511341718-6974-1-git-send-email-m.purski@samsung.com
This commit is contained in:
Maciej Purski
2017-11-22 10:08:38 +01:00
committed by Andrzej Hajda
parent ecba7cfa3a
commit 9378cecb1c
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/bridge/sil-sii8620.c
View File

@@ -1226,7 +1226,7 @@ static void sii8620_start_video(struct sii8620 *ctx)
int clk = ctx->pixel_clock * (ctx->use_packed_pixel ? 2 : 3);
int i;
for (i = 0; i < ARRAY_SIZE(clk_spec); ++i)
for (i = 0; i < ARRAY_SIZE(clk_spec) - 1; ++i)
if (clk < clk_spec[i].max_clk)
break;