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Stephan Mueller 8e1fa89aa8 crypto: algif_aead - skip SGL entries with NULL page 
The TX SGL may contain SGL entries that are assigned a NULL page. This
may happen if a multi-stage AIO operation is performed where the data
for each stage is pointed to by one SGL entry. Upon completion of that
stage, af_alg_pull_tsgl will assign NULL to the SGL entry.

The NULL cipher used to copy the AAD from TX SGL to the destination
buffer, however, cannot handle the case where the SGL starts with an SGL
entry having a NULL page. Thus, the code needs to advance the start
pointer into the SGL to the first non-NULL entry.

This fixes a crash visible on Intel x86 32 bit using the libkcapi test
suite.

Cc: <stable@vger.kernel.org>
Fixes: 72548b093e ("crypto: algif_aead - copy AAD from src to dst")
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
 		2017-11-24 13:23:36 +08:00
..
asymmetric_keys crypto: move pub key to generic async completion 2017-11-03 22:11:18 +08:00
async_tx async_tx: Fix DMA_PREP_FENCE usage in do_async_gen_syndrome() 2017-05-16 10:01:57 +05:30
.gitignore
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842.c crypto: acomp - add support for 842 via scomp 2016-10-25 11:08:33 +08:00
Kconfig crypto: sm3 - add OSCCA SM3 secure hash 2017-09-22 17:43:07 +08:00
Makefile crypto: sm3 - add OSCCA SM3 secure hash 2017-09-22 17:43:07 +08:00
ablk_helper.c crypto: ablk_helper - Fix cryptd reordering 2016-06-23 18:29:53 +08:00
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: Replaced gcc specific attributes with macros from compiler.h 2017-01-13 00:24:39 +08:00
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: algif - move to generic async completion 2017-11-03 22:11:18 +08:00
ahash.c crypto: remove redundant backlog checks on EBUSY 2017-11-03 22:11:17 +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: change transient busy return code to -ENOSPC 2017-11-03 22:11:16 +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: algif_aead - skip SGL entries with NULL page 2017-11-24 13:23:36 +08:00
algif_hash.c crypto: algif - move to generic async completion 2017-11-03 22:11:18 +08:00
algif_rng.c
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algif_skcipher.c crypto: algif - move to generic async completion 2017-11-03 22:11:18 +08:00
ansi_cprng.c
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anubis.c
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api.c crypto: introduce crypto wait for async op 2017-11-03 22:11:18 +08:00
arc4.c
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authenc.c crypto: skcipher - Get rid of crypto_spawn_skcipher2() 2016-11-01 08:37:17 +08:00
authencesn.c crypto: authencesn - Fix digest_null crash 2017-07-18 17:01:11 +08:00
blkcipher.c crypto: Replaced gcc specific attributes with macros from compiler.h 2017-01-13 00:24:39 +08:00
blowfish_common.c
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blowfish_generic.c
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camellia_generic.c
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cast5_generic.c
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cast6_generic.c
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cast_common.c
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cbc.c crypto: cbc - Propagate NEED_FALLBACK bit 2017-03-09 18:34:39 +08:00
ccm.c crypto: ccm - move cbcmac input off the stack 2017-02-28 17:29:17 +08:00
chacha20_generic.c crypto: chacha20 - fix handling of chunked input 2017-08-22 14:45:47 +08:00
chacha20poly1305.c crypto: skcipher - Get rid of crypto_spawn_skcipher2() 2016-11-01 08:37:17 +08:00
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: crc32 - Rename generic implementation 2016-01-30 22:11:22 +08:00
crc32c_generic.c crypto: crc32c - Fix crc32c soft dependency 2016-01-19 15:52:10 +08:00
crct10dif_common.c
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crct10dif_generic.c crypto: squash lines for simple wrapper functions 2016-09-13 20:27:26 +08:00
cryptd.c crypto: change transient busy return code to -ENOSPC 2017-11-03 22:11:16 +08:00
crypto_engine.c crypto: engine - replace pr_xxx by dev_xxx 2017-06-19 14:19:54 +08:00
crypto_null.c crypto: null - Remove default null blkcipher 2016-07-18 17:35:44 +08:00
crypto_user.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-05-02 16:40:27 -07:00
crypto_wq.c
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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
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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 - move to generic async completion 2017-11-03 22:11:19 +08:00
ecb.c
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ecc.c crypto: ecdh - add privkey generation support 2017-06-10 12:04:35 +08:00
ecc.h crypto: ecdh - add privkey generation support 2017-06-10 12:04:35 +08:00
ecc_curve_defs.h crypto: ecdh - Add ECDH software support 2016-06-23 18:29:57 +08:00
ecdh.c crypto: ecdh - remove empty exit() 2017-11-06 14:45:04 +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 - Replace chaining with multiplication 2016-09-13 18:44:57 +08:00
fcrypt.c
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fips.c
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gcm.c crypto: gcm - move to generic async completion 2017-11-03 22:11:19 +08:00
gf128mul.c crypto: gf128mul - The x8_ble multiplication functions 2017-11-03 21:50:43 +08:00
ghash-generic.c crypto: ghash-generic - move common definitions to a new header file 2016-10-02 22:26:40 +08:00
hash_info.c keys, trusted: select hash algorithm for TPM2 chips 2015-12-20 15:27:12 +02:00
hmac.c crypto: hmac - add hmac IPAD/OPAD constant 2017-05-23 12:52:05 +08:00
internal.h crypto: api - Remove no-op exit_ops code 2016-10-21 11:03:42 +08:00
jitterentropy-kcapi.c crypto: jitterentropy - drop duplicate header module.h 2016-11-17 23:34:52 +08:00
jitterentropy.c
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keywrap.c crypto: keywrap - simplify code 2017-10-12 22:55:06 +08:00
khazad.c
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kpp.c crypto: Replaced gcc specific attributes with macros from compiler.h 2017-01-13 00:24:39 +08:00
lrw.c crypto: remove redundant backlog checks on EBUSY 2017-11-03 22:11:17 +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 sched/headers: Prepare for new header dependencies before moving code to <linux/sched/stat.h> 2017-03-02 08:42:34 +01:00
md4.c
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md5.c md5: remove from lib and only live in crypto 2017-03-24 22:02:56 +08:00
memneq.c
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michael_mic.c
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pcbc.c crypto: algapi - make crypto_xor() take separate dst and src arguments 2017-08-04 09:27:15 +08:00
pcrypt.c
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poly1305_generic.c crypto: poly1305 - Use unaligned access where required 2016-11-13 17:45:03 +08:00
proc.c
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ripemd.h
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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: remove redundant backlog checks on EBUSY 2017-11-03 22:11:17 +08:00
rsa.c crypto: rsa - comply with crypto_akcipher_maxsize() 2017-06-10 12:04:30 +08:00
rsa_helper.c crypto: rsa - allow keys >= 2048 bits in FIPS mode 2016-08-24 21:07:10 +08:00
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
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scatterwalk.c crypto: scatterwalk - Remove unnecessary aliasing check in map_and_copy 2016-11-22 15:02:25 +08:00
scompress.c crypto: scompress - defer allocation of scratch buffer to first use 2017-08-03 13:52:44 +08:00
seed.c
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seqiv.c crypto: algapi - make crypto_xor() and crypto_inc() alignment agnostic 2017-02-11 17:52:28 +08:00
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 crypto: sha3 - Add missing ULL suffixes for 64-bit constants 2016-08-08 23:43:46 +08:00
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
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shash.c crypto: Replaced gcc specific attributes with macros from compiler.h 2017-01-13 00:24:39 +08:00
simd.c crypto: simd - Add simd skcipher helper 2016-11-28 21:23:18 +08:00
skcipher.c crypto: skcipher - Add missing API setkey checks 2017-05-18 13:04:05 +08:00
sm3_generic.c crypto: sm3 - add OSCCA SM3 secure hash 2017-09-22 17:43:07 +08:00
tcrypt.c crypto: tcrypt - move to generic async completion 2017-11-03 22:11:22 +08:00
tcrypt.h
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tea.c
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testmgr.c crypto: testmgr - move to generic async completion 2017-11-03 22:11:19 +08:00
testmgr.h crypto: sm3 - add SM3 test vectors 2017-09-22 17:43:08 +08:00
tgr192.c
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twofish_common.c
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twofish_generic.c
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vmac.c
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wp512.c
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xcbc.c
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xor.c crypto: xor - Fix warning when XOR_SELECT_TEMPLATE is unset 2016-08-31 23:00:48 +08:00
xts.c crypto: remove redundant backlog checks on EBUSY 2017-11-03 22:11:17 +08:00