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(parent: 4091c00) | patch
tpm: Check for integer overflow in tpm2_map_response_body()
authorDan Carpenter <dan.carpenter@oracle.com>
Wed, 8 Sep 2021 05:33:57 +0000 (08:33 +0300)
committerJarkko Sakkinen <jarkko@kernel.org>
Tue, 26 Oct 2021 02:03:33 +0000 (05:03 +0300)
commita0bcce2b2a169e10eb265c8f0ebdd5ae4c875670
treec569785c1419f682322e7633bbf929054d90f3f4tree | snapshot
parent4091c004283bc65d2478fbfc9f2521fcb5af1f96commit | diff
tpm: Check for integer overflow in tpm2_map_response_body()

The "4 * be32_to_cpu(data->count)" multiplication can potentially
overflow which would lead to memory corruption.  Add a check for that.

Cc: stable@vger.kernel.org
Fixes: 745b361e989a ("tpm: infrastructure for TPM spaces")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
drivers/char/tpm/tpm2-space.c diff | blob | history
Domain: System / Kernel;