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Stephan Mueller bd6ac3e4c4 crypto: AF_ALG - remove SGL terminator indicator when chaining 
commit 1d4ba7f963a93a2207fd103d4a36df1b5aeefea2 upstream.

Fixed differently upstream as commit 2d97591ef43d ("crypto: af_alg - consolidation of duplicate code")

The SGL is MAX_SGL_ENTS + 1 in size. The last SG entry is used for the
chaining and is properly updated with the sg_chain invocation. During
the filling-in of the initial SG entries, sg_mark_end is called for each
SG entry. This is appropriate as long as no additional SGL is chained
with the current SGL. However, when a new SGL is chained and the last
SG entry is updated with sg_chain, the last but one entry still contains
the end marker from the sg_mark_end. This end marker must be removed as
otherwise a walk of the chained SGLs will cause a NULL pointer
dereference at the last but one SG entry, because sg_next will return
NULL.

The patch only applies to all kernels up to and including 4.13. The
patch 2d97591ef43d0587be22ad1b0d758d6df4999a0b added to 4.14-rc1
introduced a complete new code base which addresses this bug in
a different way. Yet, that patch is too invasive for stable kernels
and was therefore not marked for stable.

Fixes: 8ff590903d ("crypto: algif_skcipher - User-space interface for skcipher operations")
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
 		2019-07-27 21:44:42 +02:00
..
asymmetric_keys crypto: crypto_memneq - add equality testing of memory regions w/o timing leaks 2019-07-27 21:42:52 +02:00
async_tx
…
842.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
Kconfig arm: crypto: Add optimized SHA-256/224 2015-09-16 18:20:15 +05:30
Makefile crypto: improve gcc optimization flags for serpent and wp512 2019-07-27 21:43:58 +02:00
ablk_helper.c crypto: ablk_helper - Replace memcpy with struct assignment 2015-03-19 14:52:28 -07:00
ablkcipher.c crypto: skcipher - Add crypto_skcipher_has_setkey 2019-07-27 21:42:06 +02:00
aead.c
…
aes_generic.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
af_alg.c crypto: af_alg - Forbid bind(2) when nokey child sockets are present 2019-07-27 21:42:08 +02:00
ahash.c crypto: hash - Add crypto_ahash_has_setkey 2019-07-27 21:42:05 +02:00
algapi.c crypto: api - Clear CRYPTO_ALG_DEAD bit before registering an alg 2019-07-27 21:43:50 +02:00
algboss.c
…
algif_hash.c crypto: algif_hash - avoid zero-sized array 2019-07-27 21:44:05 +02:00
algif_skcipher.c crypto: AF_ALG - remove SGL terminator indicator when chaining 2019-07-27 21:44:42 +02:00
ansi_cprng.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
anubis.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
api.c crypto: api - Only abort operations on fatal signal 2015-11-09 10:12:59 -08:00
arc4.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
authenc.c crypto: crypto_memneq - add equality testing of memory regions w/o timing leaks 2019-07-27 21:42:52 +02:00
authencesn.c crypto: crypto_memneq - add equality testing of memory regions w/o timing leaks 2019-07-27 21:42:52 +02:00
blkcipher.c crypto: skcipher - Fix blkcipher walk OOM crash 2019-07-27 21:42:09 +02:00
blowfish_common.c
…
blowfish_generic.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
camellia_generic.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
cast5_generic.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
cast6_generic.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
cast_common.c
…
cbc.c crypto: include crypto- module prefix in template 2015-01-29 17:40:57 -08:00
ccm.c crypto: crypto_memneq - add equality testing of memory regions w/o timing leaks 2019-07-27 21:42:52 +02:00
chainiv.c This is the 3.10.67 stable release 2015-04-24 18:04:40 -07:00
cipher.c
…
cmac.c crypto: include crypto- module prefix in template 2015-01-29 17:40:57 -08:00
compress.c
…
crc32.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
crc32c.c crypto: crc32c - add missing crypto module alias 2015-02-11 14:48:18 +08:00
cryptd.c crypto: cryptd - Assign statesize properly 2019-07-27 21:44:03 +02:00
crypto_null.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
crypto_user.c crypto: user - lock crypto_alg_list on alg dump 2016-02-19 14:22:41 -08:00
crypto_wq.c
…
ctr.c crypto: include crypto- module prefix in template 2015-01-29 17:40:57 -08:00
cts.c crypto: include crypto- module prefix in template 2015-01-29 17:40:57 -08:00
deflate.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
des_generic.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
ecb.c crypto: include crypto- module prefix in template 2015-01-29 17:40:57 -08:00
eseqiv.c crypto: include crypto- module prefix in template 2015-01-29 17:40:57 -08:00
fcrypt.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
fips.c
…
gcm.c crypto: crypto_memneq - add equality testing of memory regions w/o timing leaks 2019-07-27 21:42:52 +02:00
gf128mul.c
…
ghash-generic.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
hmac.c crypto: include crypto- module prefix in template 2015-01-29 17:40:57 -08:00
internal.h
…
khazad.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
krng.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
lrw.c crypto: include crypto- module prefix in template 2015-01-29 17:40:57 -08:00
lzo.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
md4.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
md5.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
memneq.c crypto: crypto_memneq - add equality testing of memory regions w/o timing leaks 2019-07-27 21:42:52 +02:00
michael_mic.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
pcbc.c crypto: include crypto- module prefix in template 2015-01-29 17:40:57 -08:00
pcompress.c
…
pcrypt.c crypto: include crypto- module prefix in template 2015-01-29 17:40:57 -08:00
proc.c
…
ripemd.h
…
rmd128.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
rmd160.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
rmd256.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
rmd320.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
rng.c
…
salsa20_generic.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
scatterwalk.c crypto: scatterwalk - Fix test in scatterwalk_done 2019-07-27 21:41:53 +02:00
seed.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00
seqiv.c crypto: include crypto- module prefix in template 2015-01-29 17:40:57 -08:00
serpent_generic.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
sha1_generic.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
sha256_generic.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
sha512_generic.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
shash.c crypto: shash - Fix has_key setting 2019-07-27 21:42:05 +02:00
tcrypt.c
…
tcrypt.h
…
tea.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
testmgr.c
…
testmgr.h
…
tgr192.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
twofish_common.c
…
twofish_generic.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
vmac.c crypto: include crypto- module prefix in template 2015-01-29 17:40:57 -08:00
wp512.c crypto: add missing crypto module aliases 2015-01-29 17:40:57 -08:00
xcbc.c crypto: include crypto- module prefix in template 2015-01-29 17:40:57 -08:00
xor.c
…
xts.c crypto: include crypto- module prefix in template 2015-01-29 17:40:57 -08:00
zlib.c crypto: prefix module autoloading with "crypto-" 2015-01-29 17:40:57 -08:00