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| author | Alan Modra <amodra@gmail.com> | 2017-09-24 21:36:18 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2017-09-24 21:40:58 +0930 |
| commit | 52b36c51e5bf6d7600fdc6ba115b170b0e78e31d (patch) | |
| tree | da1de8a8a1c7824e563b7b15d23d2f9c24f00693 /bfd/opncls.c | |
| parent | a26a013f22a19e2c16729e64f40ef8a7dfcc086e (diff) | |
| download | gdb-52b36c51e5bf6d7600fdc6ba115b170b0e78e31d.zip gdb-52b36c51e5bf6d7600fdc6ba115b170b0e78e31d.tar.gz gdb-52b36c51e5bf6d7600fdc6ba115b170b0e78e31d.tar.bz2 | |
PR22197, buffer overflow in bfd_get_debug_link_info_1
PR 22197
* opncls.c (bfd_get_debug_link_info_1): Properly check that crc is
within section bounds.
Diffstat (limited to 'bfd/opncls.c')
| -rw-r--r-- | bfd/opncls.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/bfd/opncls.c b/bfd/opncls.c index fa54986..8550623 100644 --- a/bfd/opncls.c +++ b/bfd/opncls.c @@ -1200,7 +1200,7 @@ bfd_get_debug_link_info_1 (bfd *abfd, void *crc32_out) /* PR 17597: avoid reading off the end of the buffer. */ crc_offset = strnlen (name, bfd_get_section_size (sect)) + 1; crc_offset = (crc_offset + 3) & ~3; - if (crc_offset >= bfd_get_section_size (sect)) + if (crc_offset + 4 > bfd_get_section_size (sect)) return NULL; *crc32 = bfd_get_32 (abfd, contents + crc_offset); |