Version in base suite: 1.3.3-2+deb11u1 Base version: flac_1.3.3-2+deb11u1 Target version: flac_1.3.3-2+deb11u2 Base file: /srv/ftp-master.debian.org/ftp/pool/main/f/flac/flac_1.3.3-2+deb11u1.dsc Target file: /srv/ftp-master.debian.org/policy/pool/main/f/flac/flac_1.3.3-2+deb11u2.dsc changelog | 6 + patches/0022-CVE-2020-22219.patch | 176 ++++++++++++++++++++++++++++++++++++++ patches/series | 3 3 files changed, 184 insertions(+), 1 deletion(-) diff -Nru flac-1.3.3/debian/changelog flac-1.3.3/debian/changelog --- flac-1.3.3/debian/changelog 2022-03-14 09:51:59.000000000 +0000 +++ flac-1.3.3/debian/changelog 2023-09-17 17:49:54.000000000 +0000 @@ -1,3 +1,9 @@ +flac (1.3.3-2+deb11u2) bullseye-security; urgency=medium + + * CVE-2020-22219 + + -- Moritz Mühlenhoff Sun, 17 Sep 2023 19:49:54 +0200 + flac (1.3.3-2+deb11u1) bullseye; urgency=medium * CVE-2021-0561 (Closes: #1006339) diff -Nru flac-1.3.3/debian/patches/0022-CVE-2020-22219.patch flac-1.3.3/debian/patches/0022-CVE-2020-22219.patch --- flac-1.3.3/debian/patches/0022-CVE-2020-22219.patch 1970-01-01 00:00:00.000000000 +0000 +++ flac-1.3.3/debian/patches/0022-CVE-2020-22219.patch 2023-09-11 18:04:43.000000000 +0000 @@ -0,0 +1,176 @@ +From 21fe95ee828b0b9b944f6aa0bb02d24fbb981815 Mon Sep 17 00:00:00 2001 +From: Martijn van Beurden +Date: Wed, 3 Aug 2022 13:52:19 +0200 +Subject: [PATCH] Add and use _nofree variants of safe_realloc functions + +Parts of the code use realloc like + +x = safe_realloc(x, somesize); + +when this is the case, the safe_realloc variant used must free the +old memory block in case it fails, otherwise it will leak. However, +there are also instances in the code where handling is different: + +if (0 == (x = safe_realloc(y, somesize))) + return false + +in this case, y should not be freed, as y is not set to NULL we +could encounter double frees. Here the safe_realloc_nofree +functions are used. +--- + include/share/alloc.h | 41 +++++++++++++++++++++++++++++++---- + src/flac/encode.c | 4 ++-- + src/flac/foreign_metadata.c | 2 +- + src/libFLAC/bitwriter.c | 2 +- + src/libFLAC/metadata_object.c | 2 +- + src/plugin_common/tags.c | 2 +- + src/share/utf8/iconvert.c | 2 +- + 7 files changed, 44 insertions(+), 11 deletions(-) + +--- a/include/share/alloc.h ++++ b/include/share/alloc.h +@@ -161,17 +161,30 @@ static inline void *safe_realloc_(void * + free(oldptr); + return newptr; + } +-static inline void *safe_realloc_add_2op_(void *ptr, size_t size1, size_t size2) ++static inline void *safe_realloc_nofree_add_2op_(void *ptr, size_t size1, size_t size2) ++{ ++ size2 += size1; ++ if(size2 < size1) ++ return 0; ++ return realloc(ptr, size2); ++} ++ ++static inline void *safe_realloc_add_3op_(void *ptr, size_t size1, size_t size2, size_t size3) + { + size2 += size1; + if(size2 < size1) { + free(ptr); + return 0; + } +- return realloc(ptr, size2); ++ size3 += size2; ++ if(size3 < size2) { ++ free(ptr); ++ return 0; ++ } ++ return safe_realloc_(ptr, size3); + } + +-static inline void *safe_realloc_add_3op_(void *ptr, size_t size1, size_t size2, size_t size3) ++static inline void *safe_realloc_nofree_add_3op_(void *ptr, size_t size1, size_t size2, size_t size3) + { + size2 += size1; + if(size2 < size1) +@@ -182,7 +195,7 @@ static inline void *safe_realloc_add_3op + return realloc(ptr, size3); + } + +-static inline void *safe_realloc_add_4op_(void *ptr, size_t size1, size_t size2, size_t size3, size_t size4) ++static inline void *safe_realloc_nofree_add_4op_(void *ptr, size_t size1, size_t size2, size_t size3, size_t size4) + { + size2 += size1; + if(size2 < size1) +@@ -205,6 +218,15 @@ static inline void *safe_realloc_mul_2op + return safe_realloc_(ptr, size1*size2); + } + ++static inline void *safe_realloc_nofree_mul_2op_(void *ptr, size_t size1, size_t size2) ++{ ++ if(!size1 || !size2) ++ return realloc(ptr, 0); /* preserve POSIX realloc(ptr, 0) semantics */ ++ if(size1 > SIZE_MAX / size2) ++ return 0; ++ return realloc(ptr, size1*size2); ++} ++ + /* size1 * (size2 + size3) */ + static inline void *safe_realloc_muladd2_(void *ptr, size_t size1, size_t size2, size_t size3) + { +@@ -216,4 +238,15 @@ static inline void *safe_realloc_muladd2 + return safe_realloc_mul_2op_(ptr, size1, size2); + } + ++/* size1 * (size2 + size3) */ ++static inline void *safe_realloc_nofree_muladd2_(void *ptr, size_t size1, size_t size2, size_t size3) ++{ ++ if(!size1 || (!size2 && !size3)) ++ return realloc(ptr, 0); /* preserve POSIX realloc(ptr, 0) semantics */ ++ size2 += size3; ++ if(size2 < size3) ++ return 0; ++ return safe_realloc_nofree_mul_2op_(ptr, size1, size2); ++} ++ + #endif +--- a/src/flac/encode.c ++++ b/src/flac/encode.c +@@ -1743,10 +1743,10 @@ static void static_metadata_clear(static + static FLAC__bool static_metadata_append(static_metadata_t *m, FLAC__StreamMetadata *d, FLAC__bool needs_delete) + { + void *x; +- if(0 == (x = safe_realloc_muladd2_(m->metadata, sizeof(*m->metadata), /*times (*/m->num_metadata, /*+*/1/*)*/))) ++ if(0 == (x = safe_realloc_nofree_muladd2_(m->metadata, sizeof(*m->metadata), /*times (*/m->num_metadata, /*+*/1/*)*/))) + return false; + m->metadata = (FLAC__StreamMetadata**)x; +- if(0 == (x = safe_realloc_muladd2_(m->needs_delete, sizeof(*m->needs_delete), /*times (*/m->num_metadata, /*+*/1/*)*/))) ++ if(0 == (x = safe_realloc_nofree_muladd2_(m->needs_delete, sizeof(*m->needs_delete), /*times (*/m->num_metadata, /*+*/1/*)*/))) + return false; + m->needs_delete = (FLAC__bool*)x; + m->metadata[m->num_metadata] = d; +--- a/src/flac/foreign_metadata.c ++++ b/src/flac/foreign_metadata.c +@@ -75,7 +75,7 @@ static FLAC__bool copy_data_(FILE *fin, + + static FLAC__bool append_block_(foreign_metadata_t *fm, FLAC__off_t offset, FLAC__uint32 size, const char **error) + { +- foreign_block_t *fb = safe_realloc_muladd2_(fm->blocks, sizeof(foreign_block_t), /*times (*/fm->num_blocks, /*+*/1/*)*/); ++ foreign_block_t *fb = safe_realloc_nofree_muladd2_(fm->blocks, sizeof(foreign_block_t), /*times (*/fm->num_blocks, /*+*/1/*)*/); + if(fb) { + fb[fm->num_blocks].offset = offset; + fb[fm->num_blocks].size = size; +--- a/src/libFLAC/bitwriter.c ++++ b/src/libFLAC/bitwriter.c +@@ -124,7 +124,7 @@ FLAC__bool bitwriter_grow_(FLAC__BitWrit + FLAC__ASSERT(new_capacity > bw->capacity); + FLAC__ASSERT(new_capacity >= bw->words + ((bw->bits + bits_to_add + FLAC__BITS_PER_WORD - 1) / FLAC__BITS_PER_WORD)); + +- new_buffer = safe_realloc_mul_2op_(bw->buffer, sizeof(bwword), /*times*/new_capacity); ++ new_buffer = safe_realloc_nofree_mul_2op_(bw->buffer, sizeof(bwword), /*times*/new_capacity); + if(new_buffer == 0) + return false; + bw->buffer = new_buffer; +--- a/src/libFLAC/metadata_object.c ++++ b/src/libFLAC/metadata_object.c +@@ -98,7 +98,7 @@ static FLAC__bool free_copy_bytes_(FLAC_ + /* realloc() failure leaves entry unchanged */ + static FLAC__bool ensure_null_terminated_(FLAC__byte **entry, uint32_t length) + { +- FLAC__byte *x = safe_realloc_add_2op_(*entry, length, /*+*/1); ++ FLAC__byte *x = safe_realloc_nofree_add_2op_(*entry, length, /*+*/1); + if (x != NULL) { + x[length] = '\0'; + *entry = x; +--- a/src/plugin_common/tags.c ++++ b/src/plugin_common/tags.c +@@ -317,7 +317,7 @@ FLAC__bool FLAC_plugin__tags_add_tag_utf + const size_t value_len = strlen(value); + const size_t separator_len = strlen(separator); + FLAC__byte *new_entry; +- if(0 == (new_entry = safe_realloc_add_4op_(entry->entry, entry->length, /*+*/value_len, /*+*/separator_len, /*+*/1))) ++ if(0 == (new_entry = safe_realloc_nofree_add_4op_(entry->entry, entry->length, /*+*/value_len, /*+*/separator_len, /*+*/1))) + return false; + memcpy(new_entry+entry->length, separator, separator_len); + entry->length += separator_len; +--- a/src/share/utf8/iconvert.c ++++ b/src/share/utf8/iconvert.c +@@ -149,7 +149,7 @@ int iconvert(const char *fromcode, const + iconv_close(cd1); + return ret; + } +- newbuf = safe_realloc_add_2op_(utfbuf, (ob - utfbuf), /*+*/1); ++ newbuf = safe_realloc_nofree_add_2op_(utfbuf, (ob - utfbuf), /*+*/1); + if (!newbuf) + goto fail; + ob = (ob - utfbuf) + newbuf; diff -Nru flac-1.3.3/debian/patches/series flac-1.3.3/debian/patches/series --- flac-1.3.3/debian/patches/series 2022-03-14 09:51:25.000000000 +0000 +++ flac-1.3.3/debian/patches/series 2023-09-17 17:49:28.000000000 +0000 @@ -2,4 +2,5 @@ privacy-breach-logo.patch 0001-remove-build-path-from-generated-FLAC.tag-file.patch 0020-libFLAC-bitreader.c-Fix-out-of-bounds-read.patch -0021-CVE-2021-0561.patch \ No newline at end of file +0021-CVE-2021-0561.patch +0022-CVE-2020-22219.patch