forked from luck/tmp_suning_uos_patched
71ec65c700
[ Upstream commit 68b6dea802cea0dbdd8bd7ccc60716b5a32a5d8a ]
These three events can race when pcrypt is used multiple times in a
template ("pcrypt(pcrypt(...))"):
1. [taskA] The caller makes the crypto request via crypto_aead_encrypt()
2. [kworkerB] padata serializes the inner pcrypt request
3. [kworkerC] padata serializes the outer pcrypt request
3 might finish before the call to crypto_aead_encrypt() returns in 1,
resulting in two possible issues.
First, a use-after-free of the crypto request's memory when, for
example, taskA writes to the outer pcrypt request's padata->info in
pcrypt_aead_enc() after kworkerC completes the request.
Second, the outer pcrypt request overwrites the inner pcrypt request's
return code with -EINPROGRESS, making a successful request appear to
fail. For instance, kworkerB writes the outer pcrypt request's
padata->info in pcrypt_aead_done() and then taskA overwrites it
in pcrypt_aead_enc().
Avoid both situations by delaying the write of padata->info until after
the inner crypto request's return code is checked. This prevents the
use-after-free by not touching the crypto request's memory after the
next-inner crypto request is made, and stops padata->info from being
overwritten.
Fixes:
|
||
|---|---|---|
| .. | ||
| asymmetric_keys | ||
| async_tx | ||
| 842.c | ||
| acompress.c | ||
| adiantum.c | ||
| aead.c | ||
| aegis.h | ||
| aegis128-core.c | ||
| aegis128-neon-inner.c | ||
| aegis128-neon.c | ||
| aes_generic.c | ||
| aes_ti.c | ||
| af_alg.c | ||
| ahash.c | ||
| akcipher.c | ||
| algapi.c | ||
| algboss.c | ||
| algif_aead.c | ||
| algif_hash.c | ||
| algif_rng.c | ||
| algif_skcipher.c | ||
| ansi_cprng.c | ||
| anubis.c | ||
| api.c | ||
| arc4.c | ||
| authenc.c | ||
| authencesn.c | ||
| blake2b_generic.c | ||
| blake2s_generic.c | ||
| blowfish_common.c | ||
| blowfish_generic.c | ||
| camellia_generic.c | ||
| cast_common.c | ||
| cast5_generic.c | ||
| cast6_generic.c | ||
| cbc.c | ||
| ccm.c | ||
| cfb.c | ||
| chacha_generic.c | ||
| chacha20poly1305.c | ||
| cipher.c | ||
| cmac.c | ||
| compress.c | ||
| crc32_generic.c | ||
| crc32c_generic.c | ||
| crct10dif_common.c | ||
| crct10dif_generic.c | ||
| cryptd.c | ||
| crypto_engine.c | ||
| crypto_null.c | ||
| crypto_user_base.c | ||
| crypto_user_stat.c | ||
| ctr.c | ||
| cts.c | ||
| curve25519-generic.c | ||
| deflate.c | ||
| des_generic.c | ||
| dh_helper.c | ||
| dh.c | ||
| drbg.c | ||
| ecb.c | ||
| ecc_curve_defs.h | ||
| ecc.c | ||
| ecc.h | ||
| ecdh_helper.c | ||
| ecdh.c | ||
| echainiv.c | ||
| ecrdsa_defs.h | ||
| ecrdsa_params.asn1 | ||
| ecrdsa_pub_key.asn1 | ||
| ecrdsa.c | ||
| essiv.c | ||
| fcrypt.c | ||
| fips.c | ||
| gcm.c | ||
| geniv.c | ||
| gf128mul.c | ||
| ghash-generic.c | ||
| hash_info.c | ||
| hmac.c | ||
| internal.h | ||
| jitterentropy-kcapi.c | ||
| jitterentropy.c | ||
| jitterentropy.h | ||
| Kconfig | ||
| keywrap.c | ||
| khazad.c | ||
| kpp.c | ||
| lrw.c | ||
| lz4.c | ||
| lz4hc.c | ||
| lzo-rle.c | ||
| lzo.c | ||
| Makefile | ||
| md4.c | ||
| md5.c | ||
| memneq.c | ||
| michael_mic.c | ||
| nhpoly1305.c | ||
| ofb.c | ||
| pcbc.c | ||
| pcrypt.c | ||
| poly1305_generic.c | ||
| proc.c | ||
| ripemd.h | ||
| rmd128.c | ||
| rmd160.c | ||
| rmd256.c | ||
| rmd320.c | ||
| rng.c | ||
| rsa_helper.c | ||
| rsa-pkcs1pad.c | ||
| rsa.c | ||
| rsaprivkey.asn1 | ||
| rsapubkey.asn1 | ||
| salsa20_generic.c | ||
| scatterwalk.c | ||
| scompress.c | ||
| seed.c | ||
| seqiv.c | ||
| serpent_generic.c | ||
| sha1_generic.c | ||
| sha3_generic.c | ||
| sha256_generic.c | ||
| sha512_generic.c | ||
| shash.c | ||
| simd.c | ||
| skcipher.c | ||
| sm2.c | ||
| sm2signature.asn1 | ||
| sm3_generic.c | ||
| sm4_generic.c | ||
| streebog_generic.c | ||
| tcrypt.c | ||
| tcrypt.h | ||
| tea.c | ||
| testmgr.c | ||
| testmgr.h | ||
| tgr192.c | ||
| twofish_common.c | ||
| twofish_generic.c | ||
| vmac.c | ||
| wp512.c | ||
| xcbc.c | ||
| xor.c | ||
| xts.c | ||
| xxhash_generic.c | ||
| zstd.c | ||