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ipv6: sr: Fix MAC comparison to be constant-time
authorEric Biggers <ebiggers@kernel.org>
Mon, 18 Aug 2025 20:27:24 +0000 (13:27 -0700)
committerJakub Kicinski <kuba@kernel.org>
Thu, 21 Aug 2025 02:32:30 +0000 (19:32 -0700)
commita458b2902115b26a25d67393b12ddd57d1216aaa
tree0c1955551d323fb4fc46008e8b745c8f53b0ee6atree
parent7af76e9d18a9fd6f8611b3313c86c190f9b6a5a7commit | diff
ipv6: sr: Fix MAC comparison to be constant-time

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

Fixes: bf355b8d2c30 ("ipv6: sr: add core files for SR HMAC support")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
Reviewed-by: Andrea Mayer <andrea.mayer@uniroma2.it>
Link: https://patch.msgid.link/20250818202724.15713-1-ebiggers@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/ipv6/seg6_hmac.c diff | blob | history
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