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| author | Alan Modra <amodra@gmail.com> | 2020-04-20 09:54:46 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2020-04-20 11:09:43 +0930 |
| commit | 8ff66993e0b57b20067d7a1b6c72a72f4cada2cf (patch) | |
| tree | 5009a15d97f28daa49f1eabc21645167c7308531 /binutils/ChangeLog | |
| parent | 58ee9a8a46b632ada94ae057acc23ba3928afa66 (diff) | |
| download | gdb-8ff66993e0b57b20067d7a1b6c72a72f4cada2cf.zip gdb-8ff66993e0b57b20067d7a1b6c72a72f4cada2cf.tar.gz gdb-8ff66993e0b57b20067d7a1b6c72a72f4cada2cf.tar.bz2 | |
readelf: segfaults fuzzing multiple object files
This patch is aimed at fixing a number of oss-fuzz segfaults that
don't reproduce reliably with their current infrastructure, the
problem being that one invocation of readelf is effectively being run
on multiple object files. I believe that these segfaults could be
reliably reproduced with just two fuzzed objects being presented to
readelf, but those inputs are currently not identified by oss-fuzz.
So there is some guesswork involved in this patch. The idea here is
to clear stashed data such as symtab_shndx_list that is processed
using section header info, at the same time that header info is
cleared.
* readelf.c (process_section_headers): Free dynamic symbols etc.
earlier.
Diffstat (limited to 'binutils/ChangeLog')
| -rw-r--r-- | binutils/ChangeLog | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/binutils/ChangeLog b/binutils/ChangeLog index 92d9b29..86eb578 100644 --- a/binutils/ChangeLog +++ b/binutils/ChangeLog @@ -1,5 +1,10 @@ 2020-04-20 Alan Modra <amodra@gmail.com> + * readelf.c (process_section_headers): Free dynamic symbols etc. + earlier. + +2020-04-20 Alan Modra <amodra@gmail.com> + * readelf.c (get_num_dynamic_syms): Formatting. Don't return on error without freeing. (process_dynamic_section): Don't recreate dynamic symbols from |