diff options
Diffstat (limited to 'kernel/bpf')
| -rw-r--r-- | kernel/bpf/verifier.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 90493a66dddd..bc138f34e38c 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -671,7 +671,7 @@ static int check_packet_access(struct verifier_env *env, u32 regno, int off, struct reg_state *reg = ®s[regno]; off += reg->off; - if (off < 0 || off + size > reg->range) { + if (off < 0 || size <= 0 || off + size > reg->range) { verbose("invalid access to packet, off=%d size=%d, R%d(id=%d,off=%d,r=%d)\n", off, size, regno, reg->id, reg->off, reg->range); return -EACCES; |