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v6.12.39
linux-yocto/crypto
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Lukas Wunner f2133b849f crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP() 
commit b16510a530 upstream.

Herbert notes that DIV_ROUND_UP() may overflow unnecessarily if an ecdsa
implementation's ->key_size() callback returns an unusually large value.
Herbert instead suggests (for a division by 8):

  X / 8 + !!(X & 7)

Based on this formula, introduce a generic DIV_ROUND_UP_POW2() macro and
use it in lieu of DIV_ROUND_UP() for ->key_size() return values.

Additionally, use the macro in ecc_digits_from_bytes(), whose "nbytes"
parameter is a ->key_size() return value in some instances, or a
user-specified ASN.1 length in the case of ecdsa_get_signature_rs().

Link: https://lore.kernel.org/r/Z3iElsILmoSu6FuC@gondor.apana.org.au/
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2025-07-17 18:37:24 +02:00
..
asymmetric_keys KEYS: prevent NULL pointer dereference in find_asymmetric_key() 2024-09-20 19:49:49 +03:00
async_tx async_tx: fix kernel-doc notation warnings 2023-03-24 18:22:28 +08:00
842.c
acompress.c crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
adiantum.c crypto: adiantum - flush destination page before unmapping 2023-11-01 12:58:42 +08:00
aead.c crypto: aead,cipher - zeroize key buffer after use 2024-04-26 17:26:09 +08:00
aegis-neon.h crypto: aegis128-neon - add header for internal prototypes 2023-05-24 18:12:33 +08:00
aegis.h
aegis128-core.c crypto: aegis128 - Fix indentation issue in crypto_aegis128_process_crypt() 2024-09-13 18:26:52 +08:00
aegis128-neon-inner.c crypto: aegis128-neon - add header for internal prototypes 2023-05-24 18:12:33 +08:00
aegis128-neon.c crypto: aegis128-neon - add header for internal prototypes 2023-05-24 18:12:33 +08:00
aes_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
aes_ti.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
af_alg.c crypto: Add missing MODULE_DESCRIPTION() macros 2024-05-31 17:34:56 +08:00
ahash.c crypto: ahash - Set default reqsize from ahash_alg 2025-05-29 11:02:40 +02:00
akcipher.c crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
algapi.c crypto: api - Fix boot-up self-test race 2025-02-08 09:57:28 +01:00
algboss.c crypto: algboss - Pass instance creation error up 2024-09-06 14:50:46 +08:00
algif_aead.c sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
algif_hash.c crypto: algif_hash - fix double free in hash_accept 2025-05-29 11:03:18 +02:00
algif_rng.c sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES) 2023-06-24 15:50:13 -07:00
algif_skcipher.c crypto: Add missing MODULE_DESCRIPTION() macros 2024-05-31 17:34:56 +08:00
ansi_cprng.c
anubis.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
api.c crypto: api - Redo lookup on EEXIST 2025-06-19 15:31:30 +02:00
arc4.c crypto: arc4 - Add internal state 2023-12-08 11:59:46 +08:00
aria_generic.c crypto: x86/aria - do not use magic number offsets of aria_ctx 2023-01-06 17:15:47 +08:00
authenc.c crypto: authenc - stop using alignmask of ahash 2023-10-27 18:04:29 +08:00
authencesn.c crypto: authencesn - stop using alignmask of ahash 2023-10-27 18:04:29 +08:00
blake2b_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
blowfish_common.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
blowfish_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
bpf_crypto_skcipher.c crypto: bpf - Add MODULE_DESCRIPTION for skcipher 2025-04-10 14:39:17 +02:00
camellia_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
cast_common.c crypto: Add missing MODULE_DESCRIPTION() macros 2024-05-31 17:34:56 +08:00
cast5_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
cast6_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
cbc.c crypto: cbc - Ensure statesize is zero 2024-02-02 18:08:12 +08:00
ccm.c crypto: ccm - stop using alignmask of ahash 2023-10-27 18:04:29 +08:00
chacha_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
chacha20poly1305.c crypto: chacha20poly1305 - Annotate struct chachapoly_ctx with __counted_by() 2024-08-17 13:55:49 +08:00
cipher.c crypto: aead,cipher - zeroize key buffer after use 2024-04-26 17:26:09 +08:00
cmac.c crypto: cmac - remove unnecessary alignment logic 2023-10-27 18:04:24 +08:00
compress.c
compress.h crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
crc32_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
crc32c_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
crc64_rocksoft_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
crct10dif_common.c
crct10dif_generic.c
cryptd.c crypto: cryptd - Only access common skcipher fields on spawn 2023-10-13 18:27:26 +08:00
crypto_engine.c crypto: engine - Make crypto_engine_exit() return void 2023-10-01 16:28:15 +08:00
crypto_null.c crypto: null - Use spin lock instead of mutex 2025-05-02 07:59:15 +02:00
crypto_user.c crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
ctr.c crypto: ctr - Only access common skcipher fields on spawn 2023-10-13 18:27:27 +08:00
cts.c crypto: cts - Only access common skcipher fields on spawn 2023-10-13 18:27:27 +08:00
curve25519-generic.c crypto: Add missing MODULE_DESCRIPTION() macros 2024-05-31 17:34:56 +08:00
deflate.c crypto: deflate - Add aliases to deflate 2024-06-28 11:35:47 +10:00
des_generic.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
dh_helper.c crypto: dh - split out deserialization code from crypto_dh_decode() 2022-03-03 10:47:50 +12:00
dh.c crypto: dh - Check mpi_rshift errors 2024-08-17 13:55:50 +08:00
drbg.c crypto: drbg - Remove SHA1 from drbg 2023-11-17 19:16:29 +08:00
ecb.c crypto: skcipher - Add internal state support 2023-12-08 11:59:46 +08:00
ecc_curve_defs.h crypto: ecc - Add NIST P521 curve parameters 2024-04-12 15:07:52 +08:00
ecc.c crypto: ecdsa - Harden against integer overflows in DIV_ROUND_UP() 2025-07-17 18:37:24 +02:00
ecdh_helper.c
ecdh.c crypto: ecdh - Initialize ctx->private_key in proper byte order 2024-04-26 17:26:09 +08:00
ecdsa.c crypto: ecdsa - Avoid signed integer overflow on signature decoding 2024-12-14 20:03:36 +01:00
ecdsasignature.asn1
echainiv.c
ecrdsa_defs.h crypto: ecc - Add nbits field to ecc_curve structure 2024-04-12 15:07:52 +08:00
ecrdsa_params.asn1
ecrdsa_pub_key.asn1
ecrdsa.c crypto: ecrdsa - Fix module auto-load on add_key 2024-04-02 10:49:38 +08:00
essiv.c crypto: essiv - Handle lskcipher spawns 2023-10-13 18:27:26 +08:00
fcrypt.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
fips.c crypto: fips - Remove the now superfluous sentinel element from ctl_table array 2024-04-05 15:46:33 +08:00
gcm.c crypto: gcm - stop using alignmask of ahash 2023-10-27 18:04:29 +08:00
geniv.c
ghash-generic.c
hash_info.c crypto: FIPS 202 SHA-3 register in hash info for IMA 2023-10-27 18:04:30 +08:00
hash.h crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
hctr2.c crypto: hctr2 - stop using alignmask of shash_alg 2023-10-27 18:04:25 +08:00
hmac.c crypto: hmac - remove unnecessary alignment logic 2023-10-27 18:04:24 +08:00
internal.h crypto: api - Do not wait for tests during registration 2024-08-24 21:39:15 +08:00
jitterentropy-kcapi.c crypto: jitter - Use kvfree_sensitive() to fix Coccinelle warning 2024-04-05 15:46:33 +08:00
jitterentropy-testing.c crypto: jitter - add interface for gathering of raw entropy 2023-05-12 18:48:01 +08:00
jitterentropy.c crypto: jitter - Use min() to simplify jent_read_entropy() 2024-08-30 18:22:30 +08:00
jitterentropy.h crypto: jitter - reuse allocated entropy collector 2023-10-13 18:31:07 +08:00
Kconfig crypto: Kconfig - Select LIB generic option 2025-05-02 07:59:33 +02:00
kdf_sp800108.c crypto: kdf - silence noisy self-test 2022-11-25 17:39:18 +08:00
keywrap.c
khazad.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
kpp.c crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
lrw.c crypto: lrw - Only add ecb if it is not already there 2025-06-19 15:31:30 +02:00
lskcipher.c crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
lz4.c
lz4hc.c
lzo-rle.c crypto: lzo - Fix compression buffer overrun 2025-05-29 11:02:25 +02:00
lzo.c crypto: lzo - Fix compression buffer overrun 2025-05-29 11:02:25 +02:00
Makefile crypto: sm2 - Remove sm2 algorithm 2024-06-07 19:46:39 +08:00
md4.c
md5.c
michael_mic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
nhpoly1305.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
pcbc.c crypto: pcbc - remove redundant assignment to nbytes 2024-01-26 16:39:32 +08:00
pcrypt.c crypto: pcrypt - Call crypto layer directly when padata_do_parallel() return -EBUSY 2024-12-05 14:01:18 +01:00
poly1305_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
polyval-generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
proc.c crypto: proc - Print fips status 2023-02-14 13:39:33 +08:00
ripemd.h
rmd160.c
rng.c crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
rsa_helper.c
rsa-pkcs1pad.c crypto: rsa-pkcs1pad - Add FIPS 202 SHA-3 support 2023-10-27 18:04:30 +08:00
rsa.c crypto: rsa - Check MPI allocation errors 2024-08-17 13:55:50 +08:00
rsaprivkey.asn1 treewide: Add SPDX identifier to IETF ASN.1 modules 2023-10-27 18:04:28 +08:00
rsapubkey.asn1 treewide: Add SPDX identifier to IETF ASN.1 modules 2023-10-27 18:04:28 +08:00
scatterwalk.c
scompress.c crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
seed.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
seqiv.c crypto: api - Use data directly in completion function 2023-02-13 18:35:14 +08:00
serpent_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
sha1_generic.c
sha3_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
sha256_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
sha512_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
shash.c crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
sig.c crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
simd.c crypto: simd - Do not call crypto_alloc_tfm during registration 2024-08-24 21:39:15 +08:00
skcipher.c crypto: skcipher - Zap type in crypto_alloc_sync_skcipher 2025-05-29 11:02:40 +02:00
skcipher.h crypto: remove CONFIG_CRYPTO_STATS 2024-04-02 10:49:38 +08:00
sm3_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
sm3.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
sm4_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
sm4.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
streebog_generic.c
tcrypt.c crypto: tcrypt - add skcipher speed for given alg 2024-06-28 11:35:46 +10:00
tcrypt.h crypto: tcrypt - include larger key sizes in RFC4106 benchmark 2023-01-20 18:29:31 +08:00
tea.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
testmgr.c crypto: testmgr - Hide ENOENT errors better 2024-10-10 17:03:35 +08:00
testmgr.h crypto: sm2 - Remove sm2 algorithm 2024-06-07 19:46:39 +08:00
twofish_common.c crypto: Prepare to move crypto_tfm_ctx 2022-12-02 18:12:40 +08:00
twofish_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
vmac.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
wp512.c crypto: wp512 - disable kmsan checks in wp512_process_buffer() 2022-12-30 22:56:27 +08:00
xcbc.c crypto: xcbc - remove unnecessary alignment logic 2023-10-27 18:04:25 +08:00
xctr.c crypto: xctr - Add XCTR support 2022-06-10 16:40:16 +08:00
xor.c crypto: xor - fix template benchmarking 2024-08-02 20:53:25 +08:00
xts.c crypto: xts - Only add ecb if it is not already there 2025-06-19 15:31:30 +02:00
xxhash_generic.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
zstd.c lib: zstd: Add kernel-specific API 2021-11-08 16:55:21 -08:00