diff options
| author | Francis Laniel <laniel_francis@privacyrequired.com> | 2020-12-15 20:43:54 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 22:46:16 -0800 |
| commit | febebaf366868a4204deb3955ef5dda17f676fc1 (patch) | |
| tree | ecad89f7e968a84ea586af705e4404890bbb2a8b /drivers/misc/lkdtm/core.c | |
| parent | 33e56a59e64dfb68778e5da0be13f0c47dc5d445 (diff) | |
drivers/misc/lkdtm: add new file in LKDTM to test fortified strscpy
This new test ensures that fortified strscpy has the same behavior than
vanilla strscpy (e.g. returning -E2BIG when src content is truncated).
Finally, it generates a crash at runtime because there is a write overflow
in destination string.
Link: https://lkml.kernel.org/r/20201122162451.27551-5-laniel_francis@privacyrequired.com
Signed-off-by: Francis Laniel <laniel_francis@privacyrequired.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Daniel Axtens <dja@axtens.net>
Cc: Daniel Micay <danielmicay@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc/lkdtm/core.c')
| -rw-r--r-- | drivers/misc/lkdtm/core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/misc/lkdtm/core.c b/drivers/misc/lkdtm/core.c index b8c51a633fcc..3c0a67f072c0 100644 --- a/drivers/misc/lkdtm/core.c +++ b/drivers/misc/lkdtm/core.c @@ -175,6 +175,7 @@ static const struct crashtype crashtypes[] = { CRASHTYPE(USERCOPY_KERNEL), CRASHTYPE(STACKLEAK_ERASING), CRASHTYPE(CFI_FORWARD_PROTO), + CRASHTYPE(FORTIFIED_STRSCPY), #ifdef CONFIG_X86_32 CRASHTYPE(DOUBLE_FAULT), #endif |