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linux/security/keys/trusted-keys
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Eric Biggers ec230e7ac6 KEYS: trusted_tpm1: Compare HMAC values in constant time 
commit eed0e3d305 upstream.

To prevent timing attacks, HMAC value comparison needs to be constant
time.  Replace the memcmp() with the correct function, crypto_memneq().

[For the Fixes commit I used the commit that introduced the memcmp().
It predates the introduction of crypto_memneq(), but it was still a bug
at the time even though a helper function didn't exist yet.]

Fixes: d00a1c72f7 ("keys: add new trusted key-type")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-10-19 16:33:51 +02:00
..
Kconfig KEYS: trusted: Introduce NXP DCP-backed trusted keys 2024-05-09 18:29:03 +03:00
Makefile KEYS: trusted: Introduce NXP DCP-backed trusted keys 2024-05-09 18:29:03 +03:00
tpm2key.asn1 security: keys: trusted: use ASN.1 TPM2 key format for the blobs 2021-04-14 16:30:30 +03:00
trusted_caam.c KEYS: trusted: Introduce support for NXP CAAM-based trusted keys 2022-05-23 18:47:50 +03:00
trusted_core.c KEYS: trusted: add missing MODULE_DESCRIPTION() 2024-07-01 14:16:54 +00:00
trusted_dcp.c KEYS: trusted: dcp: fix improper sg use with CONFIG_VMAP_STACK=y 2025-02-17 10:05:09 +01:00
trusted_tee.c KEYS: trusted: tee: Refactor register SHM usage 2023-10-24 03:06:35 +03:00
trusted_tpm1.c KEYS: trusted_tpm1: Compare HMAC values in constant time 2025-10-19 16:33:51 +02:00
trusted_tpm2.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00