From 6c1824fd0b6c245566175dfcc56b61b03471d510 Mon Sep 17 00:00:00 2001 From: Mike Gilbert Date: Mon, 27 Jan 2020 16:52:40 -0500 Subject: media-gfx/fontforge: bump to 20190801 Package-Manager: Portage-2.3.85_p2, Repoman-2.3.20_p36 Signed-off-by: Mike Gilbert --- media-gfx/fontforge/files/CVE-2020-5395.patch | 78 +++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 media-gfx/fontforge/files/CVE-2020-5395.patch (limited to 'media-gfx/fontforge/files') diff --git a/media-gfx/fontforge/files/CVE-2020-5395.patch b/media-gfx/fontforge/files/CVE-2020-5395.patch new file mode 100644 index 000000000000..51b524503764 --- /dev/null +++ b/media-gfx/fontforge/files/CVE-2020-5395.patch @@ -0,0 +1,78 @@ +From 048a91e2682c1a8936ae34dbc7bd70291ec05410 Mon Sep 17 00:00:00 2001 +From: Skef Iterum +Date: Mon, 6 Jan 2020 03:05:06 -0800 +Subject: [PATCH] Fix for #4084 Use-after-free (heap) in the + SFD_GetFontMetaData() function Fix for #4086 NULL pointer dereference in the + SFDGetSpiros() function Fix for #4088 NULL pointer dereference in the + SFD_AssignLookups() function Add empty sf->fontname string if it isn't set, + fixing #4089 #4090 and many other potential issues (many downstream calls + to strlen() on the value). + +--- + fontforge/sfd.c | 19 ++++++++++++++----- + fontforge/sfd1.c | 2 +- + 2 files changed, 15 insertions(+), 6 deletions(-) + +diff --git a/fontforge/sfd.c b/fontforge/sfd.c +index 731be201e0..e8ca39ba83 100644 +--- a/fontforge/sfd.c ++++ b/fontforge/sfd.c +@@ -4032,13 +4032,16 @@ static void SFDGetSpiros(FILE *sfd,SplineSet *cur) { + while ( fscanf(sfd,"%lg %lg %c", &cp.x, &cp.y, &cp.ty )==3 ) { + if ( cur!=NULL ) { + if ( cur->spiro_cnt>=cur->spiro_max ) +- cur->spiros = realloc(cur->spiros,(cur->spiro_max+=10)*sizeof(spiro_cp)); ++ cur->spiros = realloc(cur->spiros, ++ (cur->spiro_max+=10)*sizeof(spiro_cp)); + cur->spiros[cur->spiro_cnt++] = cp; + } + } +- if ( cur!=NULL && (cur->spiros[cur->spiro_cnt-1].ty&0x7f)!=SPIRO_END ) { ++ if ( cur!=NULL && cur->spiro_cnt>0 ++ && (cur->spiros[cur->spiro_cnt-1].ty&0x7f)!=SPIRO_END ) { + if ( cur->spiro_cnt>=cur->spiro_max ) +- cur->spiros = realloc(cur->spiros,(cur->spiro_max+=1)*sizeof(spiro_cp)); ++ cur->spiros = realloc(cur->spiros, ++ (cur->spiro_max+=1)*sizeof(spiro_cp)); + memset(&cur->spiros[cur->spiro_cnt],0,sizeof(spiro_cp)); + cur->spiros[cur->spiro_cnt++].ty = SPIRO_END; + } +@@ -7992,10 +7995,12 @@ bool SFD_GetFontMetaData( FILE *sfd, + else if ( strmatch(tok,"LayerCount:")==0 ) + { + d->had_layer_cnt = true; +- getint(sfd,&sf->layer_cnt); +- if ( sf->layer_cnt>2 ) { ++ int layer_cnt_tmp; ++ getint(sfd,&layer_cnt_tmp); ++ if ( layer_cnt_tmp>2 ) { + sf->layers = realloc(sf->layers,sf->layer_cnt*sizeof(LayerInfo)); + memset(sf->layers+2,0,(sf->layer_cnt-2)*sizeof(LayerInfo)); ++ sf->layer_cnt = layer_cnt_tmp; + } + } + else if ( strmatch(tok,"Layer:")==0 ) +@@ -8948,6 +8953,10 @@ exit( 1 ); + } + } + ++ // Many downstream functions assume this isn't NULL (use strlen, etc.) ++ if ( sf->fontname==NULL) ++ sf->fontname = copy(""); ++ + if ( fromdir ) + sf = SFD_FigureDirType(sf,tok,dirname,enc,remap,had_layer_cnt); + else if ( sf->subfontcnt!=0 ) { +diff --git a/fontforge/sfd1.c b/fontforge/sfd1.c +index cf931059d0..b42f832678 100644 +--- a/fontforge/sfd1.c ++++ b/fontforge/sfd1.c +@@ -674,7 +674,7 @@ void SFD_AssignLookups(SplineFont1 *sf) { + + /* Fix up some gunk from really old versions of the sfd format */ + SFDCleanupAnchorClasses(&sf->sf); +- if ( sf->sf.uni_interp==ui_unset ) ++ if ( sf->sf.uni_interp==ui_unset && sf->sf.map!=NULL ) + sf->sf.uni_interp = interp_from_encoding(sf->sf.map->enc,ui_none); + + /* Fixup for an old bug */ -- cgit v1.2.3-65-gdbad