crypto: xts - Handle EBUSY correctly

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[ Upstream commit 51c082514c ]

As it is xts only handles the special return value of EINPROGRESS,
which means that in all other cases it will free data related to the
request.

However, as the caller of xts may specify MAY_BACKLOG, we also need
to expect EBUSY and treat it in the same way.  Otherwise backlogged
requests will trigger a use-after-free.

Fixes: 8083b1bf81 ("crypto: xts - add support for ciphertext stealing")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Herbert Xu 2023-01-22 16:07:37 +08:00 • committed by Greg Kroah-Hartman

parent 9a4350bd6e

commit d587084887

1 changed files with 4 additions and 4 deletions

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crypto/xts.c

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