tpm: Use auth only after NULL check in tpm_buf_check_hmac_response()

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Dereference auth after NULL check in tpm_buf_check_hmac_response().
Otherwise, unless tpm2_sessions_init() was called, a call can cause NULL
dereference, when TCG_TPM2_HMAC is enabled.

[jarkko: adjusted the commit message.]
Cc: stable@vger.kernel.org # v6.10+
Fixes: 7ca110f267 ("tpm: Address !chip->auth in tpm_buf_append_hmac_session*()")
Signed-off-by: Hao Ge <gehao@kylinos.cn>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>

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Hao Ge 2024-07-09 10:33:37 +08:00 • committed by Jarkko Sakkinen

parent d679783188

commit 7dc357d343

1 changed files with 3 additions and 2 deletions

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drivers/char/tpm/tpm2-sessions.c

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