diff options
| author | Leah Rowe <leah@libreboot.org> | 2026-03-25 20:19:18 +0000 |
|---|---|---|
| committer | Leah Rowe <leah@libreboot.org> | 2026-03-26 06:59:42 +0000 |
| commit | e44ea5d794adf36b25bdc7b8eb666665fd32e12e (patch) | |
| tree | a04baeac9652bd598af8953b3cc8f5c53a72c956 /util/libreboot-utils/lib/rand.c | |
| parent | 7b3c8cf7eceb8e261a7f9189d0efa306ddd57d0c (diff) | |
lbutils: also check null!
Signed-off-by: Leah Rowe <leah@libreboot.org>
Diffstat (limited to 'util/libreboot-utils/lib/rand.c')
| -rw-r--r-- | util/libreboot-utils/lib/rand.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/util/libreboot-utils/lib/rand.c b/util/libreboot-utils/lib/rand.c index dccf3646..b1c210c3 100644 --- a/util/libreboot-utils/lib/rand.c +++ b/util/libreboot-utils/lib/rand.c @@ -61,6 +61,9 @@ rset(void *buf, size_t n) { int saved_errno = errno; + if (if_err(buf == NULL, EFAULT)) + goto err; + #if (defined(__OpenBSD__) || defined(__FreeBSD__) || \ defined(__NetBSD__) || defined(__APPLE__) || \ defined(__DragonFly__)) && !(defined(USE_URANDOM) && \ @@ -104,15 +107,14 @@ retry_rand: ((USE_URANDOM) > 0) close_no_err(&fd); #endif - goto out; +#endif +out: + errno = saved_errno; + return; err: err_no_cleanup(1, ECANCELED, "Randomisation failure, possibly unsupported in your kernel."); exit(EXIT_FAILURE); -#endif - -out: - errno = saved_errno; } #endif |