Check that the argument provided to the 'log level' command is in the range between zero and CONFIG_LOG_MAX_LEVEL.

Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- cmd/log.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/cmd/log.c b/cmd/log.c index 664f7bd7ac..78352b2cb9 100644 --- a/cmd/log.c +++ b/cmd/log.c @@ -14,10 +14,18 @@ static char log_fmt_chars[LOGF_COUNT] = "clFLfm"; static int do_log_level(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { - if (argc > 1) - gd->default_log_level = simple_strtol(argv[1], NULL, 10); - else + if (argc > 1) { + long log_level = simple_strtol(argv[1], NULL, 10); + + if (log_level < 0 || log_level > _LOG_MAX_LEVEL) { + printf("Only log levels <= %d are supported\n", + _LOG_MAX_LEVEL); + return CMD_RET_FAILURE; + } + gd->default_log_level = log_level; + } else { printf("Default log level: %d\n", gd->default_log_level); + }

return 0; } -- 2.20.1