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Rabin Vincent 7e77bdebff crypto: af_alg - fix backlog handling 
If a request is backlogged, it's complete() handler will get called
twice: once with -EINPROGRESS, and once with the final error code.

af_alg's complete handler, unlike other users, does not handle the
-EINPROGRESS but instead always completes the completion that recvmsg()
is waiting on.  This can lead to a return to user space while the
request is still pending in the driver.  If userspace closes the sockets
before the requests are handled by the driver, this will lead to
use-after-frees (and potential crashes) in the kernel due to the tfm
having been freed.

The crashes can be easily reproduced (for example) by reducing the max
queue length in cryptod.c and running the following (from
http://www.chronox.de/libkcapi.html) on AES-NI capable hardware:

 $ while true; do kcapi -x 1 -e -c '__ecb-aes-aesni' \
    -k 00000000000000000000000000000000 \
    -p 00000000000000000000000000000000 >/dev/null & done

Cc: stable@vger.kernel.org
Signed-off-by: Rabin Vincent <rabin.vincent@axis.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
 		2014-12-22 22:53:55 +11:00
..
asymmetric_keys Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2014-10-12 10:13:55 -04:00
async_tx dmaengine: fix xor sources continuation 2014-08-21 10:20:52 -07:00
842.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
Kconfig Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2014-10-08 06:44:48 -04:00
Makefile crypto: sha-mb - multibuffer crypto infrastructure 2014-08-25 20:32:25 +08:00
ablk_helper.c crypto: ablk_helper - Replace memcpy with struct assignment 2013-10-07 14:16:57 +08:00
ablkcipher.c crypto: skcipher - Use eseqiv even on UP machines 2013-10-30 09:51:45 +08:00
aead.c crypto: user - fix info leaks in report API 2013-02-19 20:27:03 +08:00
aes_generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
af_alg.c crypto: af_alg - fix backlog handling 2014-12-22 22:53:55 +11:00
ahash.c crypto: hash - initialize entry len for null input in crypto hash sg list walk 2014-08-25 20:27:16 +08:00
algapi.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
algboss.c crypto: algboss - Hold ref count on larval 2013-06-25 19:15:17 +08:00
algif_hash.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2014-12-13 13:33:26 -08:00
algif_skcipher.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2014-12-13 13:33:26 -08:00
ansi_cprng.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
anubis.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
api.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
arc4.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
authenc.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
authencesn.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
blkcipher.c crypto: allow blkcipher walks over AEAD data 2014-03-10 20:17:11 +08:00
blowfish_common.c crypto: blowfish - split generic and common c code 2011-09-22 21:25:25 +10:00
blowfish_generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
camellia_generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
cast5_generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
cast6_generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
cast_common.c crypto: make tables used from assembler __visible 2013-08-14 20:42:03 +10:00
cbc.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
ccm.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
chainiv.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
cipher.c crypto: cipher - Fix checkpatch errors 2010-02-16 20:31:37 +08:00
cmac.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
compress.c crypto: compress - Fix checkpatch errors 2010-02-16 20:31:04 +08:00
crc32.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
crc32c_generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
crct10dif_common.c crypto: crct10dif - Add fallback for broken initrds 2013-09-12 15:31:34 +10:00
crct10dif_generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
cryptd.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
crypto_null.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
crypto_user.c crypto: user - add MODULE_ALIAS 2014-11-26 20:06:29 +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: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
cts.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
deflate.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
des_generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
drbg.c crypto: drbg - use memzero_explicit() for clearing sensitive data 2014-11-27 22:26:18 +08:00
ecb.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
eseqiv.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
fcrypt.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
fips.c crypto: api - Add fips_enable flag 2008-08-29 15:50:02 +10:00
gcm.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
gf128mul.c crypto: gf128mul - fix call to memset() 2011-07-08 17:21:21 +08:00
ghash-generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
hash_info.c crypto: provide single place for hash algo information 2013-10-25 17:14:03 -04:00
hmac.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
internal.h crypto: algboss - Hold ref count on larval 2013-06-25 19:15:17 +08:00
khazad.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
krng.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
lrw.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
lz4.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
lz4hc.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
lzo.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
mcryptd.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
md4.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
md5.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +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: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
pcompress.c crypto: user - fix info leaks in report API 2013-02-19 20:27:03 +08:00
pcrypt.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
proc.c crypto: add module.h to those files that are explicitly using it 2011-10-31 19:31:11 -04:00
ripemd.h [CRYPTO] ripemd: Put all common RIPEMD values in header file 2008-07-10 20:35:12 +08:00
rmd128.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
rmd160.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
rmd256.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
rmd320.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
rng.c crypto: user - fix info leaks in report API 2013-02-19 20:27:03 +08:00
salsa20_generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
scatterwalk.c crypto: scatterwalk - Add support for calculating number of SG elements 2013-08-21 21:27:58 +10:00
seed.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
seqiv.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
serpent_generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
sha1_generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
sha256_generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
sha512_generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
shash.c crypto: LLVMLinux: aligned-attribute.patch 2014-06-07 11:44:39 -07:00
tcrypt.c crypto: tcrypt - Allow speed testing of arbitrary hash functions 2014-12-05 23:57:47 +08:00
tcrypt.h crypto: tcrypt - Added speed tests for AEAD crypto alogrithms in tcrypt test suite 2013-12-20 20:06:25 +08:00
tea.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
testmgr.c crypto: testmgr - Remove unnecessary KERN_INFO from testmgr.c 2014-10-24 22:49:36 +08:00
testmgr.h crypto: testmgr - add test for lz4 and lz4hc 2014-08-29 21:46:36 +08:00
tgr192.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
twofish_common.c crypto: twofish-x86_64-3way - add lrw support 2011-11-09 11:53:32 +08:00
twofish_generic.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
vmac.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
wp512.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00
xcbc.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
xor.c add further __init annotations to crypto/xor.c 2012-10-11 13:42:32 +11:00
xts.c crypto: include crypto- module prefix in template 2014-11-26 20:06:30 +08:00
zlib.c crypto: prefix module autoloading with "crypto-" 2014-11-24 22:43:57 +08:00