diff options
Diffstat (limited to 'meta')
| -rw-r--r-- | meta/recipes-multimedia/libvorbis/libvorbis/CVE-2018-5146.patch | 100 | ||||
| -rw-r--r-- | meta/recipes-multimedia/libvorbis/libvorbis_1.3.5.bb | 1 |
2 files changed, 101 insertions, 0 deletions
diff --git a/meta/recipes-multimedia/libvorbis/libvorbis/CVE-2018-5146.patch b/meta/recipes-multimedia/libvorbis/libvorbis/CVE-2018-5146.patch new file mode 100644 index 00000000000..6d4052a872d --- /dev/null +++ b/meta/recipes-multimedia/libvorbis/libvorbis/CVE-2018-5146.patch @@ -0,0 +1,100 @@ +From 3a017f591457bf6e80231b563bf83ee583fdbca8 Mon Sep 17 00:00:00 2001 +From: Thomas Daede <daede003@umn.edu> +Date: Thu, 15 Mar 2018 14:15:31 -0700 +Subject: [PATCH] CVE-2018-5146: Prevent out-of-bounds write in codebook + decoding. + +Codebooks that are not an exact divisor of the partition size are now +truncated to fit within the partition. + +Upstream-Status: Backport +CVE: CVE-2018-5146 + +Reference to upstream patch: +https://git.xiph.org/?p=vorbis.git;a=commitdiff;h=667ceb4aab60c1f74060143bb24e5f427b3cce5f + +Signed-off-by: Tanu Kaskinen <tanuk@iki.fi> +--- + lib/codebook.c | 48 ++++++++++-------------------------------------- + 1 file changed, 10 insertions(+), 38 deletions(-) + +diff --git a/lib/codebook.c b/lib/codebook.c +index 8b766e8..7022fd2 100644 +--- a/lib/codebook.c ++++ b/lib/codebook.c +@@ -387,7 +387,7 @@ long vorbis_book_decodevs_add(codebook *book,float *a,oggpack_buffer *b,int n){ + t[i] = book->valuelist+entry[i]*book->dim; + } + for(i=0,o=0;i<book->dim;i++,o+=step) +- for (j=0;j<step;j++) ++ for (j=0;o+j<n && j<step;j++) + a[o+j]+=t[j][i]; + } + return(0); +@@ -399,41 +399,12 @@ long vorbis_book_decodev_add(codebook *book,float *a,oggpack_buffer *b,int n){ + int i,j,entry; + float *t; + +- if(book->dim>8){ +- for(i=0;i<n;){ +- entry = decode_packed_entry_number(book,b); +- if(entry==-1)return(-1); +- t = book->valuelist+entry*book->dim; +- for (j=0;j<book->dim;) +- a[i++]+=t[j++]; +- } +- }else{ +- for(i=0;i<n;){ +- entry = decode_packed_entry_number(book,b); +- if(entry==-1)return(-1); +- t = book->valuelist+entry*book->dim; +- j=0; +- switch((int)book->dim){ +- case 8: +- a[i++]+=t[j++]; +- case 7: +- a[i++]+=t[j++]; +- case 6: +- a[i++]+=t[j++]; +- case 5: +- a[i++]+=t[j++]; +- case 4: +- a[i++]+=t[j++]; +- case 3: +- a[i++]+=t[j++]; +- case 2: +- a[i++]+=t[j++]; +- case 1: +- a[i++]+=t[j++]; +- case 0: +- break; +- } +- } ++ for(i=0;i<n;){ ++ entry = decode_packed_entry_number(book,b); ++ if(entry==-1)return(-1); ++ t = book->valuelist+entry*book->dim; ++ for(j=0;i<n && j<book->dim;) ++ a[i++]+=t[j++]; + } + } + return(0); +@@ -471,12 +442,13 @@ long vorbis_book_decodevv_add(codebook *book,float **a,long offset,int ch, + long i,j,entry; + int chptr=0; + if(book->used_entries>0){ +- for(i=offset/ch;i<(offset+n)/ch;){ ++ int m=(offset+n)/ch; ++ for(i=offset/ch;i<m;){ + entry = decode_packed_entry_number(book,b); + if(entry==-1)return(-1); + { + const float *t = book->valuelist+entry*book->dim; +- for (j=0;j<book->dim;j++){ ++ for (j=0;i<m && j<book->dim;j++){ + a[chptr++][i]+=t[j]; + if(chptr==ch){ + chptr=0; +-- +2.16.2 + diff --git a/meta/recipes-multimedia/libvorbis/libvorbis_1.3.5.bb b/meta/recipes-multimedia/libvorbis/libvorbis_1.3.5.bb index 11e1de72233..bd2321f1d61 100644 --- a/meta/recipes-multimedia/libvorbis/libvorbis_1.3.5.bb +++ b/meta/recipes-multimedia/libvorbis/libvorbis_1.3.5.bb @@ -13,6 +13,7 @@ DEPENDS = "libogg" SRC_URI = "http://downloads.xiph.org/releases/vorbis/${BP}.tar.xz \ file://CVE-2017-14633.patch \ file://CVE-2017-14632.patch \ + file://CVE-2018-5146.patch \ " SRC_URI[md5sum] = "28cb28097c07a735d6af56e598e1c90f" SRC_URI[sha256sum] = "54f94a9527ff0a88477be0a71c0bab09a4c3febe0ed878b24824906cd4b0e1d1" |