diff options
| -rw-r--r-- | libdwfl/ChangeLog | 4 | ||||
| -rw-r--r-- | libdwfl/link_map.c | 2 |
2 files changed, 5 insertions, 1 deletions
diff --git a/libdwfl/ChangeLog b/libdwfl/ChangeLog index fedf65a4..1fce7af2 100644 --- a/libdwfl/ChangeLog +++ b/libdwfl/ChangeLog @@ -1,3 +1,7 @@ +2021-06-09 Omar Sandoval <osandov@fb.com> + + * link_map.c (read_addrs): Fix potential NULL pointer dereference. + 2021-04-19 Martin Liska <mliska@suse.cz> * dwfl_frame.c (dwfl_attach_state): Use startswith. diff --git a/libdwfl/link_map.c b/libdwfl/link_map.c index 0d8d1c17..1e7d4502 100644 --- a/libdwfl/link_map.c +++ b/libdwfl/link_map.c @@ -254,7 +254,7 @@ read_addrs (struct memory_closure *closure, Dwfl *dwfl = closure->dwfl; /* Read a new buffer if the old one doesn't cover these words. */ - if (buffer == NULL + if (*buffer == NULL || vaddr < *read_vaddr || vaddr - (*read_vaddr) + nb > *buffer_available) { |