tls: rx: device: bound the frag walk

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We can't do skb_walk_frags() on the input skbs, because
the input skbs is really just a pointer to the tcp read
queue. We need to bound the "is decrypted" check by the
amount of data in the message.

Note that the walk in tls_device_reencrypt() is after a
CoW so the skb there is safe to walk. Actually in the
current implementation it can't have frags at all, but
whatever, maybe one day it will.

Reported-by: Tariq Toukan <tariqt@nvidia.com>
Fixes: 84c61fe1a7 ("tls: rx: do not use the standard strparser")
Tested-by: Ran Rozenstein <ranro@nvidia.com>
Link: https://lore.kernel.org/r/20220809175544.354343-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Jakub Kicinski 2022-08-09 10:55:43 -07:00

parent 9ad36309e2

commit 86b259f6f8

1 changed files with 7 additions and 1 deletions

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net/tls/tls_device.c

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