| author | Eric Biggers <ebiggers@google.com> | 2019-01-06 20:46:05 (GMT) |
|---|---|---|
| committer | Eric Biggers <ebiggers@google.com> | 2019-01-18 20:43:35 (GMT) |
| commit | 1070b235af4633f9bac36d93db2af61e39e4fa0c (patch) | |
| tree | 7125f153ef629a3899d5f867a8448f128c0c3324 | |
| parent | b05264180a4d16c5b95cba9e66db33b06c68f032 (diff) | |
| download | common-1070b235af4633f9bac36d93db2af61e39e4fa0c.zip common-1070b235af4633f9bac36d93db2af61e39e4fa0c.tar.gz common-1070b235af4633f9bac36d93db2af61e39e4fa0c.tar.bz2 | |
UPSTREAM: crypto: adiantum - initialize crypto_spawn::inst
crypto_grab_*() doesn't set crypto_spawn::inst, so templates must set it
beforehand. Otherwise it will be left NULL, which causes a crash in
certain cases where algorithms are dynamically loaded/unloaded. E.g.
with CONFIG_CRYPTO_CHACHA20_X86_64=m, the following caused a crash:
insmod chacha-x86_64.ko
python -c 'import socket; socket.socket(socket.AF_ALG, 5, 0).bind(("skcipher", "adiantum(xchacha12,aes)"))'
rmmod chacha-x86_64.ko
python -c 'import socket; socket.socket(socket.AF_ALG, 5, 0).bind(("skcipher", "adiantum(xchacha12,aes)"))'
Fixes: 059c2a4d8e16 ("crypto: adiantum - add Adiantum support")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
(cherry picked from commit 6db43410179bc40419a9859ebb333f178a49829d)
Test: Adiantum self-tests
Change-Id: I248548c979b0ee9e63a35f8ae779741bb5967b6e
| -rw-r--r-- | crypto/adiantum.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/crypto/adiantum.c b/crypto/adiantum.c index 6651e71..5564e73 100644 --- a/crypto/adiantum.c +++ b/crypto/adiantum.c @@ -539,6 +539,8 @@ static int adiantum_create(struct crypto_template *tmpl, struct rtattr **tb) ictx = skcipher_instance_ctx(inst); /* Stream cipher, e.g. "xchacha12" */ + crypto_set_skcipher_spawn(&ictx->streamcipher_spawn, + skcipher_crypto_instance(inst)); err = crypto_grab_skcipher(&ictx->streamcipher_spawn, streamcipher_name, 0, crypto_requires_sync(algt->type, algt->mask)); @@ -547,6 +549,8 @@ static int adiantum_create(struct crypto_template *tmpl, struct rtattr **tb) streamcipher_alg = crypto_spawn_skcipher_alg(&ictx->streamcipher_spawn); /* Block cipher, e.g. "aes" */ + crypto_set_spawn(&ictx->blockcipher_spawn, + skcipher_crypto_instance(inst)); err = crypto_grab_spawn(&ictx->blockcipher_spawn, blockcipher_name, CRYPTO_ALG_TYPE_CIPHER, CRYPTO_ALG_TYPE_MASK); if (err) |