Bluetooth: SMP: clear the aes_cmac_key when done

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Clear the local aes_cmac_key structure via __cleanup() function
when we're done with it to avoid that sensitive data could leak on
the stack.

While we're at it, also clear the tmp[] array here that is populated
with a raw version of the original key and thus would leak the same
information via the stack otherwise.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Link: https://patch.msgid.link/20260807125845.1477067-5-thuth@redhat.com
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

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Thomas Huth 2026-08-07 14:58:41 +02:00 • committed by Eric Biggers

parent 2b240733f2

commit 053baab47d

1 changed files with 2 additions and 1 deletions

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net/bluetooth/smp.c

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