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[FFmpeg-devel,v1,1/1] check and propagate function return value

Message ID PAXP193MB12624C21AE412BE95BA4D4A4B6F09@PAXP193MB1262.EURP193.PROD.OUTLOOK.COM
State New
Headers show
Series [FFmpeg-devel,v1,1/1] check and propagate function return value
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Commit Message

Maryam Ebrahimzadeh Aug. 3, 2021, 5:05 a.m. UTC
From: maryam ebr <me22bee@outlook.com>

Hello,
similar to CVE-2013-0868, here return value check for 'init_vlc' is needed.
crafted DNxHD data can cause unspecified impact. 
---
 libavcodec/dnxhddec.c | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

Comments

Paul B Mahol Aug. 3, 2021, 6:37 a.m. UTC | #1
lgtm
Maryam Ebrahimzadeh Aug. 3, 2021, noon UTC | #2
On Aug 3, 2021, at 11:07 AM, Paul B Mahol <onemda@gmail.com<mailto:onemda@gmail.com>> wrote:

lgtm

Thanks for reviewing. If it is my duty, how can I push it to the master?
James Almer Aug. 3, 2021, 1:43 p.m. UTC | #3
On 8/3/2021 9:00 AM, Maryam Ebrahimzadeh wrote:
> 
> 
> On Aug 3, 2021, at 11:07 AM, Paul B Mahol <onemda@gmail.com<mailto:onemda@gmail.com>> wrote:
> 
> lgtm
> 
> Thanks for reviewing. If it is my duty, how can I push it to the master?

Pushed it, thanks.
diff mbox series

Patch

diff --git a/libavcodec/dnxhddec.c b/libavcodec/dnxhddec.c
index c3eca7becf..cdd9eed62a 100644
--- a/libavcodec/dnxhddec.c
+++ b/libavcodec/dnxhddec.c
@@ -112,6 +112,7 @@  static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
 
 static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
 {
+    int ret;
     if (cid != ctx->cid) {
         const CIDEntry *cid_table = ff_dnxhd_get_cid_table(cid);
 
@@ -132,19 +133,25 @@  static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
         ff_free_vlc(&ctx->dc_vlc);
         ff_free_vlc(&ctx->run_vlc);
 
-        init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
+        if ((ret = init_vlc(&ctx->ac_vlc, DNXHD_VLC_BITS, 257,
                  ctx->cid_table->ac_bits, 1, 1,
-                 ctx->cid_table->ac_codes, 2, 2, 0);
-        init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12,
+                 ctx->cid_table->ac_codes, 2, 2, 0)) < 0)
+            goto out;
+        if ((ret = init_vlc(&ctx->dc_vlc, DNXHD_DC_VLC_BITS, bitdepth > 8 ? 14 : 12,
                  ctx->cid_table->dc_bits, 1, 1,
-                 ctx->cid_table->dc_codes, 1, 1, 0);
-        init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
+                 ctx->cid_table->dc_codes, 1, 1, 0)) < 0)
+            goto out;
+        if ((ret = init_vlc(&ctx->run_vlc, DNXHD_VLC_BITS, 62,
                  ctx->cid_table->run_bits, 1, 1,
-                 ctx->cid_table->run_codes, 2, 2, 0);
+                 ctx->cid_table->run_codes, 2, 2, 0)) < 0)
+            goto out;
 
         ctx->cid = cid;
     }
-    return 0;
+    ret = 0;
+out:
+    av_log(ctx->avctx, AV_LOG_ERROR, "Corrupted, Problem in init_vlc");
+    return ret;
 }
 
 static int dnxhd_get_profile(int cid)