From d8fd24a96ae712b2de3e9b05d937b135f41d016d Mon Sep 17 00:00:00 2001 From: root Date: Sun, 18 Dec 2011 23:14:50 +0000 Subject: Sun Dec 18 23:14:50 UTC 2011 --- testing/glibc/glibc-2.14.1-tzfile-overflow.patch | 72 ++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 testing/glibc/glibc-2.14.1-tzfile-overflow.patch (limited to 'testing/glibc/glibc-2.14.1-tzfile-overflow.patch') diff --git a/testing/glibc/glibc-2.14.1-tzfile-overflow.patch b/testing/glibc/glibc-2.14.1-tzfile-overflow.patch new file mode 100644 index 000000000..af996e7b6 --- /dev/null +++ b/testing/glibc/glibc-2.14.1-tzfile-overflow.patch @@ -0,0 +1,72 @@ +diff --git a/time/tzfile.c b/time/tzfile.c +index 144e20b..402389c 100644 +--- a/time/tzfile.c ++++ b/time/tzfile.c +@@ -234,23 +234,58 @@ __tzfile_read (const char *file, size_t extra, char **extrap) + goto read_again; + } + ++ if (__builtin_expect (num_transitions ++ > ((SIZE_MAX - (__alignof__ (struct ttinfo) - 1)) ++ / (sizeof (time_t) + 1)), 0)) ++ goto lose; + total_size = num_transitions * (sizeof (time_t) + 1); + total_size = ((total_size + __alignof__ (struct ttinfo) - 1) + & ~(__alignof__ (struct ttinfo) - 1)); + types_idx = total_size; +- total_size += num_types * sizeof (struct ttinfo) + chars; ++ if (__builtin_expect (num_types ++ > (SIZE_MAX - total_size) / sizeof (struct ttinfo), 0)) ++ goto lose; ++ total_size += num_types * sizeof (struct ttinfo); ++ if (__builtin_expect (chars > SIZE_MAX - total_size, 0)) ++ goto lose; ++ total_size += chars; ++ if (__builtin_expect (__alignof__ (struct leap) - 1 ++ > SIZE_MAX - total_size, 0)) ++ goto lose; + total_size = ((total_size + __alignof__ (struct leap) - 1) + & ~(__alignof__ (struct leap) - 1)); + leaps_idx = total_size; ++ if (__builtin_expect (num_leaps ++ > (SIZE_MAX - total_size) / sizeof (struct leap), 0)) ++ goto lose; + total_size += num_leaps * sizeof (struct leap); +- tzspec_len = (sizeof (time_t) == 8 && trans_width == 8 +- ? st.st_size - (ftello (f) +- + num_transitions * (8 + 1) +- + num_types * 6 +- + chars +- + num_leaps * 12 +- + num_isstd +- + num_isgmt) - 1 : 0); ++ tzspec_len = 0; ++ if (sizeof (time_t) == 8 && trans_width == 8) ++ { ++ off_t rem = st.st_size - ftello (f); ++ if (__builtin_expect (rem < 0 ++ || (size_t) rem < (num_transitions * (8 + 1) ++ + num_types * 6 ++ + chars), 0)) ++ goto lose; ++ tzspec_len = (size_t) rem - (num_transitions * (8 + 1) ++ + num_types * 6 ++ + chars); ++ if (__builtin_expect (num_leaps > SIZE_MAX / 12 ++ || tzspec_len < num_leaps * 12, 0)) ++ goto lose; ++ tzspec_len -= num_leaps * 12; ++ if (__builtin_expect (tzspec_len < num_isstd, 0)) ++ goto lose; ++ tzspec_len -= num_isstd; ++ if (__builtin_expect (tzspec == 0 || tzspec_len - 1 < num_isgmt, 0)) ++ goto lose; ++ tzspec_len -= num_isgmt + 1; ++ if (__builtin_expect (SIZE_MAX - total_size < tzspec_len, 0)) ++ goto lose; ++ } ++ if (__builtin_expect (SIZE_MAX - total_size - tzspec_len < extra, 0)) ++ goto lose; + + /* Allocate enough memory including the extra block requested by the + caller. */ -- cgit v1.2.3-54-g00ecf