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Stephan Mueller eea0d3ea75 crypto: drbg - set freed buffers to NULL 
During freeing of the internal buffers used by the DRBG, set the pointer
to NULL. It is possible that the context with the freed buffers is
reused. In case of an error during initialization where the pointers
do not yet point to allocated memory, the NULL value prevents a double
free.

Cc: stable@vger.kernel.org
Fixes: 3cfc3b9721 ("crypto: drbg - use aligned buffers")
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Reported-by: syzbot+75397ee3df5c70164154@syzkaller.appspotmail.com
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
 		2018-04-21 00:57:00 +08:00
..
asymmetric_keys kbuild: rename *-asn1.[ch] to *.asn1.[ch] 2018-04-07 19:04:02 +09:00
async_tx License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
842.c crypto: acomp - add support for 842 via scomp 2016-10-25 11:08:33 +08:00
Kconfig MIPS changes for 4.17 2018-04-10 11:39:22 -07:00
Makefile kbuild: rename *-asn1.[ch] to *.asn1.[ch] 2018-04-07 19:04:02 +09:00
ablkcipher.c crypto: Replaced gcc specific attributes with macros from compiler.h 2017-01-13 00:24:39 +08:00
acompress.c crypto: acomp - allow registration of multiple acomps 2017-04-21 20:30:50 +08:00
aead.c crypto: aead - prevent using AEADs without setting key 2018-01-12 23:03:39 +11:00
aes_generic.c crypto: aes-generic - drop alignment requirement 2017-02-11 17:50:43 +08:00
aes_ti.c crypto: aes_ti - fix comment for MixColumns step 2017-06-19 14:11:53 +08:00
af_alg.c crypto: af_alg - fix possible uninit-value in alg_bind() 2018-04-07 22:32:31 -04:00
ahash.c crypto: ahash - Fix early termination in hash walk 2018-03-31 01:34:19 +08:00
akcipher.c crypto: Replaced gcc specific attributes with macros from compiler.h 2017-01-13 00:24:39 +08:00
algapi.c crypto: api - Keep failed instances alive 2018-03-31 01:32:58 +08:00
algboss.c crypto: algboss - remove redundant setting of len to zero 2017-10-07 12:10:34 +08:00
algif_aead.c crypto: aead - prevent using AEADs without setting key 2018-01-12 23:03:39 +11:00
algif_hash.c crypto: hash - prevent using keyed hashes without setting key 2018-01-12 23:03:37 +11:00
algif_rng.c crypto: algif_rng - Remove obsolete const-removal cast 2015-04-22 09:30:21 +08:00
algif_skcipher.c Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2018-01-31 14:22:45 -08:00
ansi_cprng.c crypto: ansi_cprng - Convert to new rng interface 2015-04-22 09:30:18 +08:00
anubis.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
api.c crypto: api - fix finding algorithm currently being tested 2018-04-21 00:24:02 +08:00
arc4.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
authenc.c crypto: null - Get rid of crypto_{get,put}_default_null_skcipher2() 2017-12-22 19:29:08 +11:00
authencesn.c crypto: null - Get rid of crypto_{get,put}_default_null_skcipher2() 2017-12-22 19:29:08 +11:00
blkcipher.c crypto: remove unused hardirq.h 2017-11-29 17:33:29 +11:00
blowfish_common.c crypto: blowfish - split generic and common c code 2011-09-22 21:25:25 +10:00
blowfish_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
camellia_generic.c crypto: replace FSF address with web source in license notices 2017-11-29 17:33:25 +11:00
cast5_generic.c crypto: replace FSF address with web source in license notices 2017-11-29 17:33:25 +11:00
cast6_generic.c crypto: replace FSF address with web source in license notices 2017-11-29 17:33:25 +11:00
cast_common.c crypto: make tables used from assembler __visible 2013-08-14 20:42:03 +10:00
cbc.c crypto: cbc - Propagate NEED_FALLBACK bit 2017-03-09 18:34:39 +08:00
ccm.c crypto: ccm - preserve the IV buffer 2017-11-03 21:35:35 +08:00
cfb.c crypto: cfb - add support for Cipher FeedBack mode 2018-03-09 22:45:49 +08:00
chacha20_generic.c crypto: chacha20 - Fix keystream alignment for chacha20_block() 2017-11-29 17:33:33 +11:00
chacha20poly1305.c crypto: chacha20poly1305 - validate the digest size 2017-12-22 19:02:33 +11:00
cipher.c crypto: api - Remove no-op exit_ops code 2016-10-21 11:03:42 +08:00
cmac.c crypto: algapi - make crypto_xor() and crypto_inc() alignment agnostic 2017-02-11 17:52:28 +08:00
compress.c crypto: api - Remove no-op exit_ops code 2016-10-21 11:03:42 +08:00
crc32_generic.c crypto: hash - annotate algorithms taking optional key 2018-01-12 23:03:35 +11:00
crc32c_generic.c crypto: hash - annotate algorithms taking optional key 2018-01-12 23:03:35 +11:00
crct10dif_common.c crypto: crct10dif - Add fallback for broken initrds 2013-09-12 15:31:34 +10:00
crct10dif_generic.c crypto: squash lines for simple wrapper functions 2016-09-13 20:27:26 +08:00
cryptd.c crypto: hash - annotate algorithms taking optional key 2018-01-12 23:03:35 +11:00
crypto_engine.c crypto: engine - Permit to enqueue all async requests 2018-02-15 23:26:50 +08:00
crypto_null.c crypto: null - Remove default null blkcipher 2016-07-18 17:35:44 +08:00
crypto_user.c crypto: user - Replace GFP_ATOMIC with GFP_KERNEL in crypto_report 2018-02-15 23:26:47 +08:00
crypto_wq.c crypto: crypto_wq - Fix late crypto work queue initialization 2014-03-21 21:54:28 +08:00
ctr.c crypto: algapi - make crypto_xor() take separate dst and src arguments 2017-08-04 09:27:15 +08:00
cts.c crypto: remove redundant backlog checks on EBUSY 2017-11-03 22:11:17 +08:00
deflate.c crypto: scomp - add support for deflate rfc1950 (zlib) 2017-04-24 18:11:08 +08:00
des_generic.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
dh.c crypto: dh - Remove pointless checks for NULL 'p' and 'g' 2017-11-10 19:20:22 +08:00
dh_helper.c crypto: dh - Don't permit 'key' or 'g' size longer than 'p' 2017-11-10 19:20:17 +08:00
drbg.c crypto: drbg - set freed buffers to NULL 2018-04-21 00:57:00 +08:00
ecb.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
ecc.c crypto: ecc - Remove stack VLA usage 2018-03-16 23:35:53 +08:00
ecc.h crypto: ecdh - add privkey generation support 2017-06-10 12:04:35 +08:00
ecc_curve_defs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ecdh.c crypto: ecdh - fix to allow multi segment scatterlists 2018-03-09 22:45:49 +08:00
ecdh_helper.c crypto: ecdh - return unsigned value for crypto_ecdh_key_len() 2017-10-12 22:55:00 +08:00
echainiv.c crypto: echainiv - Remove unused alg/spawn variable 2017-12-22 19:52:45 +11:00
fcrypt.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
fips.c crypto: fips - Move fips_enabled sysctl into fips.c 2015-04-23 14:18:09 +08:00
gcm.c crypto: null - Get rid of crypto_{get,put}_default_null_skcipher2() 2017-12-22 19:29:08 +11:00
gf128mul.c crypto: gf128mul - remove incorrect comment 2017-12-22 19:52:40 +11:00
ghash-generic.c crypto: ghash - remove checks for key being set 2018-01-12 23:03:38 +11:00
hash_info.c keys, trusted: select hash algorithm for TPM2 chips 2015-12-20 15:27:12 +02:00
hmac.c crypto: hmac - require that the underlying hash algorithm is unkeyed 2017-11-29 13:39:15 +11:00
internal.h crypto: api - Make crypto_alg_lookup static 2018-03-31 01:32:58 +08:00
jitterentropy-kcapi.c crypto: jitterentropy - drop duplicate header module.h 2016-11-17 23:34:52 +08:00
jitterentropy.c crypto: jitterentropy - Delete unnecessary checks before the function call "kzfree" 2015-06-25 23:18:33 +08:00
keywrap.c crypto: keywrap - Add missing ULL suffixes for 64-bit constants 2017-11-29 17:33:26 +11:00
khazad.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
kpp.c crypto: Replaced gcc specific attributes with macros from compiler.h 2017-01-13 00:24:39 +08:00
lrw.c crypto: lrw - Free rctx->ext with kzfree 2018-03-31 01:33:10 +08:00
lz4.c crypto: lz4 - fixed decompress function to return error code 2017-04-10 19:17:27 +08:00
lz4hc.c crypto: lz4 - fixed decompress function to return error code 2017-04-10 19:17:27 +08:00
lzo.c treewide: use kv[mz]alloc* rather than opencoded variants 2017-05-08 17:15:13 -07:00
mcryptd.c crypto: mcryptd - remove pointless wrapper functions 2018-02-15 23:26:45 +08:00
md4.c crypto: Deduplicate le32_to_cpu_array() and cpu_to_le32_array() 2018-03-31 01:33:09 +08:00
md5.c crypto: Deduplicate le32_to_cpu_array() and cpu_to_le32_array() 2018-03-31 01:33:09 +08:00
memneq.c crypto: memneq - fix for archs without efficient unaligned access 2013-12-09 20:09:12 +08:00
michael_mic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
pcbc.c crypto: algapi - make crypto_xor() take separate dst and src arguments 2017-08-04 09:27:15 +08:00
pcrypt.c crypto: pcrypt - fix freeing pcrypt instances 2017-12-22 19:02:47 +11:00
poly1305_generic.c crypto: poly1305 - remove ->setkey() method 2018-01-12 23:03:14 +11:00
proc.c crypto: algapi - convert cra_refcnt to refcount_t 2018-01-05 18:43:09 +11:00
ripemd.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rmd128.c crypto: drop unnecessary return statements 2017-09-22 17:43:28 +08:00
rmd160.c crypto: drop unnecessary return statements 2017-09-22 17:43:28 +08:00
rmd256.c crypto: drop unnecessary return statements 2017-09-22 17:43:28 +08:00
rmd320.c crypto: drop unnecessary return statements 2017-09-22 17:43:28 +08:00
rng.c crypto: rng - ensure that the RNG is ready before using 2017-07-28 17:56:00 +08:00
rsa-pkcs1pad.c crypto: rsa-pkcs1pad - Replace GFP_ATOMIC with GFP_KERNEL in pkcs1pad_encrypt_sign_complete 2018-02-15 23:26:47 +08:00
rsa.c crypto: rsa - comply with crypto_akcipher_maxsize() 2017-06-10 12:04:30 +08:00
rsa_helper.c kbuild: rename *-asn1.[ch] to *.asn1.[ch] 2018-04-07 19:04:02 +09:00
rsaprivkey.asn1 crypto: rsa - Store rest of the private key components 2016-07-05 23:05:26 +08:00
rsapubkey.asn1 crypto: akcipher - Changes to asymmetric key API 2015-10-14 22:23:16 +08:00
salsa20_generic.c crypto: salsa20 - export generic helpers 2018-01-12 23:03:42 +11:00
scatterwalk.c crypto: scatterwalk - Remove unnecessary aliasing check in map_and_copy 2016-11-22 15:02:25 +08:00
scompress.c crypto: scompress - use sgl_alloc() and sgl_free() 2018-01-06 09:18:00 -07:00
seed.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
seqiv.c crypto: seqiv - Remove unused alg/spawn variable 2017-12-22 19:52:45 +11:00
serpent_generic.c crypto: serpent - improve __serpent_setkey with UBSAN 2017-08-09 20:17:54 +08:00
sha1_generic.c crypto: hash - add zero length message hash for shax and md5 2015-12-22 20:43:35 +08:00
sha3_generic.c mn10300: Remove the architecture 2018-03-09 23:19:56 +01:00
sha256_generic.c crypto: hash - add zero length message hash for shax and md5 2015-12-22 20:43:35 +08:00
sha512_generic.c crypto: sha512-generic - move to generic glue implementation 2015-04-10 21:39:41 +08:00
shash.c crypto: hash - prevent using keyed hashes without setting key 2018-01-12 23:03:37 +11:00
simd.c crypto: simd - allow registering multiple algorithms at once 2018-03-03 00:03:17 +08:00
skcipher.c crypto: skcipher - prevent using skciphers without setting key 2018-01-12 23:03:39 +11:00
sm3_generic.c crypto: sm3 - add OSCCA SM3 secure hash 2017-09-22 17:43:07 +08:00
sm4_generic.c crypto: sm4 - introduce SM4 symmetric cipher algorithm 2018-03-16 23:35:48 +08:00
speck.c crypto: speck - export common helpers 2018-02-22 22:16:54 +08:00
tcrypt.c crypto: testmgr - introduce SM4 tests 2018-03-16 23:35:50 +08:00
tcrypt.h crypto: tcrypt - Add ChaCha20/Poly1305 speed tests 2015-07-17 21:20:20 +08:00
tea.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
testmgr.c crypto: testmgr - introduce SM4 tests 2018-03-16 23:35:50 +08:00
testmgr.h crypto: testmgr - add a new test case for CRC-T10DIF 2018-03-16 23:35:53 +08:00
tgr192.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
twofish_common.c crypto: replace FSF address with web source in license notices 2017-11-29 17:33:25 +11:00
twofish_generic.c crypto: replace FSF address with web source in license notices 2017-11-29 17:33:25 +11:00
vmac.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
wp512.c crypto: add missing crypto module aliases 2015-01-13 22:29:11 +11:00
xcbc.c crypto: replace FSF address with web source in license notices 2017-11-29 17:33:25 +11:00
xor.c kmemcheck: stop using GFP_NOTRACK and SLAB_NOTRACK 2017-11-15 18:21:04 -08:00
xts.c crypto: xts - remove xts_crypt() 2018-03-03 00:03:33 +08:00