diff options
| author | Eric Biggers <ebiggers@google.com> | 2021-01-12 22:28:18 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-04 11:39:31 +0300 |
| commit | 1fc338cde538bc2d73006fffb0ea20fa97fdbd55 (patch) | |
| tree | 45828e7182961a226ba9a6d6a2db021993dda548 | |
| parent | 3b56bc4692412ca0497a5256d8fefe910982ae53 (diff) | |
| download | linux-1fc338cde538bc2d73006fffb0ea20fa97fdbd55.tar.xz | |
random: fix the RNDRESEEDCRNG ioctl
commit 11a0b5e0ec8c13bef06f7414f9e914506140d5cb upstream.
The RNDRESEEDCRNG ioctl reseeds the primary_crng from itself, which
doesn't make sense. Reseed it from the input_pool instead.
Fixes: d848e5f8e1eb ("random: add new ioctl RNDRESEEDCRNG")
Cc: stable@vger.kernel.org
Cc: linux-crypto@vger.kernel.org
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jann Horn <jannh@google.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Link: https://lore.kernel.org/r/20210112192818.69921-1-ebiggers@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/char/random.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c index 98925d49c96b..297a716f5a56 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -2071,7 +2071,7 @@ static long random_ioctl(struct file *f, unsigned int cmd, unsigned long arg) return -EPERM; if (crng_init < 2) return -ENODATA; - crng_reseed(&primary_crng, NULL); + crng_reseed(&primary_crng, &input_pool); crng_global_init_time = jiffies - 1; return 0; default: |