diff options
author | V3n3RiX <venerix@redcorelinux.org> | 2017-12-01 03:04:39 +0000 |
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committer | V3n3RiX <venerix@redcorelinux.org> | 2017-12-01 03:04:39 +0000 |
commit | 407525b571b48cfd65e1ad7a02d250a927c967c9 (patch) | |
tree | 844bea44d85dc7218f54970af1c42cc9d55c3f1a /sys-libs/musl/files/musl-1.1.15-CVE.patch | |
parent | 89c6c06b8c42107dd231687a1012354e7d3039fc (diff) |
gentoo resync : 01.12.2017
Diffstat (limited to 'sys-libs/musl/files/musl-1.1.15-CVE.patch')
-rw-r--r-- | sys-libs/musl/files/musl-1.1.15-CVE.patch | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/sys-libs/musl/files/musl-1.1.15-CVE.patch b/sys-libs/musl/files/musl-1.1.15-CVE.patch deleted file mode 100644 index 64fbbdcd8eb1..000000000000 --- a/sys-libs/musl/files/musl-1.1.15-CVE.patch +++ /dev/null @@ -1,68 +0,0 @@ -From c3edc06d1e1360f3570db9155d6b318ae0d0f0f7 Mon Sep 17 00:00:00 2001 -From: Rich Felker <dalias@aerifal.cx> -Date: Thu, 06 Oct 2016 22:34:58 +0000 -Subject: fix missing integer overflow checks in regexec buffer size computations - -most of the possible overflows were already ruled out in practice by -regcomp having already succeeded performing larger allocations. -however at least the num_states*num_tags multiplication can clearly -overflow in practice. for safety, check them all, and use the proper -type, size_t, rather than int. - -also improve comments, use calloc in place of malloc+memset, and -remove bogus casts. ---- -diff --git a/src/regex/regexec.c b/src/regex/regexec.c -index 16c5d0a..dd52319 100644 ---- a/src/regex/regexec.c -+++ b/src/regex/regexec.c -@@ -34,6 +34,7 @@ - #include <wchar.h> - #include <wctype.h> - #include <limits.h> -+#include <stdint.h> - - #include <regex.h> - -@@ -206,11 +207,24 @@ tre_tnfa_run_parallel(const tre_tnfa_t *tnfa, const void *string, - - /* Allocate memory for temporary data required for matching. This needs to - be done for every matching operation to be thread safe. This allocates -- everything in a single large block from the stack frame using alloca() -- or with malloc() if alloca is unavailable. */ -+ everything in a single large block with calloc(). */ - { -- int tbytes, rbytes, pbytes, xbytes, total_bytes; -+ size_t tbytes, rbytes, pbytes, xbytes, total_bytes; - char *tmp_buf; -+ -+ /* Ensure that tbytes and xbytes*num_states cannot overflow, and that -+ * they don't contribute more than 1/8 of SIZE_MAX to total_bytes. */ -+ if (num_tags > SIZE_MAX/(8 * sizeof(int) * tnfa->num_states)) -+ goto error_exit; -+ -+ /* Likewise check rbytes. */ -+ if (tnfa->num_states+1 > SIZE_MAX/(8 * sizeof(*reach_next))) -+ goto error_exit; -+ -+ /* Likewise check pbytes. */ -+ if (tnfa->num_states > SIZE_MAX/(8 * sizeof(*reach_pos))) -+ goto error_exit; -+ - /* Compute the length of the block we need. */ - tbytes = sizeof(*tmp_tags) * num_tags; - rbytes = sizeof(*reach_next) * (tnfa->num_states + 1); -@@ -221,10 +235,9 @@ tre_tnfa_run_parallel(const tre_tnfa_t *tnfa, const void *string, - + (rbytes + xbytes * tnfa->num_states) * 2 + tbytes + pbytes; - - /* Allocate the memory. */ -- buf = xmalloc((unsigned)total_bytes); -+ buf = calloc(total_bytes, 1); - if (buf == NULL) - return REG_ESPACE; -- memset(buf, 0, (size_t)total_bytes); - - /* Get the various pointers within tmp_buf (properly aligned). */ - tmp_tags = (void *)buf; --- -cgit v0.9.0.3-65-g4555 |