bpf: fix missing error return in check_stack_boundary()

Browse source

Prevent indirect stack accesses at non-constant addresses, which would
permit reading and corrupting spilled pointers.

Fixes: f1174f77b5 ("bpf/verifier: rework value tracking")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

...

This commit is contained in:

Jann Horn 2017-12-18 20:11:57 -08:00 • committed by Daniel Borkmann

parent 468f6eafa6

commit ea25f914dc

1 changed files with 1 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

kernel/bpf/verifier.c

View file