From 71ea26811cbd8345cb10ab29406594e1fc19204e Mon Sep 17 00:00:00 2001 From: "Ronald S. Bultje" Date: Thu, 22 Mar 2012 11:50:48 -0700 Subject: [PATCH] aacsbr: handle m_max values smaller than 4. Prevents a signflip in the counter, and a subsequent crash because of overreads/overwrites. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org --- libavcodec/x86/sbrdsp.asm | 1 + 1 file changed, 1 insertion(+) diff --git a/libavcodec/x86/sbrdsp.asm b/libavcodec/x86/sbrdsp.asm index 31a1c8b76f..6f66327088 100644 --- a/libavcodec/x86/sbrdsp.asm +++ b/libavcodec/x86/sbrdsp.asm @@ -81,6 +81,7 @@ cglobal sbr_hf_g_filt, 5, 6, 5 lea r2, [r2 + r3*4] lea r0, [r0 + r3*8] neg r3 + jz .loop1 .loop4: movlps m0, [r2 + 4*r3 + 0] movlps m1, [r2 + 4*r3 + 8] -- 2.11.0