github-mirrors/FFmpeg
1
0
Fork 0
mirror of https://mirror.skon.top/https://github.com/FFmpeg/FFmpeg synced 2026-04-30 13:50:50 +08:00
Code Issues Packages Projects Releases Wiki Activity

avcodec/tiff: Check value on positive signed targets

Browse Source 
Fixes: CID1604593 Overflowed constant

Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 66d6b8033b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2024-07-07 20:47:24 +02:00
parent 7481e2bb30
commit dfb67d9dab
1 changed files with 18 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
libavcodec/tiff.c
View File

@@ -1269,9 +1269,13 @@ static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
s->is_thumbnail = (value != 0);
break;
case TIFF_WIDTH:
if (value > INT_MAX)
return AVERROR_INVALIDDATA;
s->width = value;
break;
case TIFF_HEIGHT:
if (value > INT_MAX)
return AVERROR_INVALIDDATA;
s->height = value;
break;
case TIFF_BPP:
@@ -1403,12 +1407,18 @@ static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
s->tile_byte_counts_offset = off;
break;
case TIFF_TILE_LENGTH:
if (value > INT_MAX)
return AVERROR_INVALIDDATA;
s->tile_length = value;
break;
case TIFF_TILE_WIDTH:
if (value > INT_MAX)
return AVERROR_INVALIDDATA;
s->tile_width = value;
break;
case TIFF_PREDICTOR:
if (value > INT_MAX)
return AVERROR_INVALIDDATA;
s->predictor = value;
break;
case TIFF_SUB_IFDS:
@@ -1539,12 +1549,18 @@ static int tiff_decode_tag(TiffContext *s, AVFrame *frame)
}
break;
case TIFF_T4OPTIONS:
if (s->compr == TIFF_G3)
if (s->compr == TIFF_G3) {
if (value > INT_MAX)
return AVERROR_INVALIDDATA;
s->fax_opts = value;
}
break;
case TIFF_T6OPTIONS:
if (s->compr == TIFF_G4)
if (s->compr == TIFF_G4) {
if (value > INT_MAX)
return AVERROR_INVALIDDATA;
s->fax_opts = value;
}
break;
#define ADD_METADATA(count, name, sep)\
if ((ret = add_metadata(count, type, name, sep, s, frame)) < 0) {\