--- /dev/null
+From 26d3c81bc5ef2f8c3f09d45eaeacfb4b1139a777 Mon Sep 17 00:00:00 2001
+From: Michael Niedermayer <michael@niedermayer.cc>
+Date: Tue, 25 May 2021 19:29:18 +0200
+Subject: [PATCH] avcodec/exr: More strictly check dc_count
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Fixes: out of array access
+Fixes: exr/deneme
+
+Found-by: Burak Çarıkçı <burakcarikci@crypttech.com>
+Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
+
+
+CVE: CVE-2021-33815
+Upstream-Status: Backport [26d3c81bc5ef2f8c3f09d45eaeacfb4b1139a777]
+
+Signed-off-by: Tony Tascioglu <tony.tascioglu@windriver.com>
+---
+ libavcodec/exr.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/libavcodec/exr.c b/libavcodec/exr.c
+index 9377a89169..4648ed7d62 100644
+--- a/libavcodec/exr.c
++++ b/libavcodec/exr.c
+@@ -1059,11 +1059,11 @@ static int dwa_uncompress(EXRContext *s, const uint8_t *src, int compressed_size
+ bytestream2_skip(&gb, ac_size);
+ }
+
+- if (dc_size > 0) {
++ {
+ unsigned long dest_len = dc_count * 2LL;
+ GetByteContext agb = gb;
+
+- if (dc_count > (6LL * td->xsize * td->ysize + 63) / 64)
++ if (dc_count != dc_w * dc_h * 3)
+ return AVERROR_INVALIDDATA;
+
+ av_fast_padded_malloc(&td->dc_data, &td->dc_size, FFALIGN(dest_len, 64) * 2);
+--
+2.32.0
+
