From c9aeb168e88d271bd6708c310de8ec5932fcd156 Mon Sep 17 00:00:00 2001 From: Srish Srinivasan Date: Fri, 23 Jan 2026 22:25:03 +0530 Subject: keys/trusted_keys: fix handle passed to tpm_buf_append_name during unseal [ Upstream commit 6342969dafbc63597cfc221aa13c3b123c2800c5 ] TPM2_Unseal[1] expects the handle of a loaded data object, and not the handle of the parent key. But the tpm2_unseal_cmd provides the parent keyhandle instead of blob_handle for the session HMAC calculation. This causes unseal to fail. Fix this by passing blob_handle to tpm_buf_append_name(). References: [1] trustedcomputinggroup.org/wp-content/uploads/ Trusted-Platform-Module-2.0-Library-Part-3-Version-184_pub.pdf Fixes: 6e9722e9a7bf ("tpm2-sessions: Fix out of range indexing in name_size") Signed-off-by: Srish Srinivasan Reviewed-by: Stefan Berger Reviewed-by: Jarkko Sakkinen Signed-off-by: Jarkko Sakkinen Signed-off-by: Sasha Levin --- security/keys/trusted-keys/trusted_tpm2.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'security') diff --git a/security/keys/trusted-keys/trusted_tpm2.c b/security/keys/trusted-keys/trusted_tpm2.c index 7187768716b7..74cea80ed9be 100644 --- a/security/keys/trusted-keys/trusted_tpm2.c +++ b/security/keys/trusted-keys/trusted_tpm2.c @@ -489,7 +489,7 @@ out: } /** - * tpm2_unseal_cmd() - execute a TPM2_Unload command + * tpm2_unseal_cmd() - execute a TPM2_Unseal command * * @chip: TPM chip to use * @payload: the key data in clear and encrypted form @@ -520,7 +520,7 @@ static int tpm2_unseal_cmd(struct tpm_chip *chip, return rc; } - rc = tpm_buf_append_name(chip, &buf, options->keyhandle, NULL); + rc = tpm_buf_append_name(chip, &buf, blob_handle, NULL); if (rc) goto out; -- cgit v1.2.3