IBM vTPM driver lacks a call to tpm2_sessions_init() and reports: [ 2.987131] tpm tpm0: tpm2_load_context: failed with a TPM error 0x01C4 [ 2.987140] ima: Error Communicating to TPM chip, result: -14
HMAC encryption code also has a risk of null derefence, given that when uninitialized, chip->auth is a null pointer. Limit TCG_TPM2_HMAC to known good drivers until these issues have been properly fixed. Cc: [email protected] # v6.10+ Fixes: d2add27cf2b8 ("tpm: Add NULL primary creation") Reported-by: Stefan Berger <[email protected]> Closes: https://lore.kernel.org/linux-integrity/[email protected]/ Signed-off-by: Jarkko Sakkinen <[email protected]> --- drivers/char/tpm/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/char/tpm/Kconfig b/drivers/char/tpm/Kconfig index cf0be8a7939d..c310588a5958 100644 --- a/drivers/char/tpm/Kconfig +++ b/drivers/char/tpm/Kconfig @@ -30,6 +30,7 @@ if TCG_TPM config TCG_TPM2_HMAC bool "Use HMAC and encrypted transactions on the TPM bus" default X86_64 + depends on TCG_CRB || TCG_TIS_CORE select CRYPTO_ECDH select CRYPTO_LIB_AESCFB select CRYPTO_LIB_SHA256 -- 2.45.2
