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-rw-r--r--src/tools/sss_seed.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/src/tools/sss_seed.c b/src/tools/sss_seed.c
index 9b8f69b12..9b1471d7c 100644
--- a/src/tools/sss_seed.c
+++ b/src/tools/sss_seed.c
@@ -263,7 +263,7 @@ static int seed_password_input_file(TALLOC_CTX *mem_ctx,
}
errno = 0;
- len = sss_atomic_read_s(fd, buf, PASS_MAX);
+ len = sss_atomic_read_s(fd, buf, PASS_MAX + 1);
if (len == -1) {
ret = errno;
DEBUG(SSSDBG_MINOR_FAILURE, ("Failed to read password from file "
@@ -274,6 +274,13 @@ static int seed_password_input_file(TALLOC_CTX *mem_ctx,
}
close(fd);
+
+ if (len > PASS_MAX) {
+ ERROR("Password file too big.\n");
+ ret = EINVAL;
+ goto done;
+ }
+
buf[len] = '\0';
/* Only the first line is valid (without '\n'). */