Before: nft: gmputil.c:77: mpz_get_uint8: Assertion `cnt <= 1' failed. After: Error: reject code must be integer in range 0-255 Signed-off-by: Florian Westphal <fw@xxxxxxxxx> --- src/evaluate.c | 7 +++++++ .../testcases/bogons/nft-f/icmp_reject_type_uint8_assert | 1 + 2 files changed, 8 insertions(+) create mode 100644 tests/shell/testcases/bogons/nft-f/icmp_reject_type_uint8_assert diff --git a/src/evaluate.c b/src/evaluate.c index c78cfd7a1d6e..89b84cd03864 100644 --- a/src/evaluate.c +++ b/src/evaluate.c @@ -3598,6 +3598,13 @@ static int stmt_evaluate_reject_icmp(struct eval_ctx *ctx, struct stmt *stmt) erec_queue(erec, ctx->msgs); return -1; } + + if (mpz_cmp_ui(code->value, 255) > 0) { + expr_free(code); + return expr_error(ctx->msgs, stmt->reject.expr, + "reject code must be integer in range 0-255"); + } + stmt->reject.icmp_code = mpz_get_uint8(code->value); expr_free(code); diff --git a/tests/shell/testcases/bogons/nft-f/icmp_reject_type_uint8_assert b/tests/shell/testcases/bogons/nft-f/icmp_reject_type_uint8_assert new file mode 100644 index 000000000000..1fc85b2938cc --- /dev/null +++ b/tests/shell/testcases/bogons/nft-f/icmp_reject_type_uint8_assert @@ -0,0 +1 @@ +rule t c reject with icmp 512 -- 2.41.0