sctp: Fix MAC comparison to be constant-time

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commit dd91c79e4f upstream.

To prevent timing attacks, MACs need to be compared in constant time.
Use the appropriate helper function for this.

Fixes: bbd0d59809 ("[SCTP]: Implement the receive and verification of AUTH chunk")
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Link: https://patch.msgid.link/20250818205426.30222-3-ebiggers@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Eric Biggers 2025-08-18 13:54:23 -07:00 • committed by Greg Kroah-Hartman

parent 9a75d1c755

commit 0b32ff285f

2 changed files with 4 additions and 2 deletions

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3

net/sctp/sm_make_chunk.c

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3

net/sctp/sm_statefuns.c

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