diff options
| author | Mark Wielaard <mark@klomp.org> | 2021-12-23 23:16:25 +0100 |
|---|---|---|
| committer | Mark Wielaard <mark@klomp.org> | 2022-01-04 00:36:49 +0100 |
| commit | 1cf73965853037301a6099dea5368a1303cde2ba (patch) | |
| tree | 7de7e275009a2fa2eb04b54712a6a807a4a76609 /libdwfl/ChangeLog | |
| parent | 4fdd85881c8acd06db737c45ea6aabc60aef3d4d (diff) | |
| download | elfutils-1cf73965853037301a6099dea5368a1303cde2ba.tar.gz | |
libdwfl: Make sure dwfl_elf_phdr_memory_callback returns at least minread
The callers of dwfl_elf_phdr_memory_callback assume at least minread
bytes are read and available. Make sure to check start is smaller than
elf->maximum_size before reading more. Return false if end - start is
smaller than minread.
Found by afl-fuzz.
Signed-off-by: Mark Wielaard <mark@klomp.org>
Diffstat (limited to 'libdwfl/ChangeLog')
| -rw-r--r-- | libdwfl/ChangeLog | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libdwfl/ChangeLog b/libdwfl/ChangeLog index abd5c34a..49a35e41 100644 --- a/libdwfl/ChangeLog +++ b/libdwfl/ChangeLog @@ -1,3 +1,8 @@ +2021-12-23 Mark Wielaard <mark@klomp.org> + + * core-file.c (dwfl_elf_phdr_memory_callback): Check start < + elf->maximum_size and end - start < minread. + 2021-12-20 Mark Wielaard <mark@klomp.org> * dwfl_segment_report_module.c (dwfl_segment_report_module): Move |