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Commit 0b529f14 authored by Harsh Jain's avatar Harsh Jain Committed by Herbert Xu
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crypto: algif_aead - Fix kernel panic on list_del 



Kernel panics when userspace program try to access AEAD interface.
Remove node from Linked List before freeing its memory.

Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarHarsh Jain <harsh@chelsio.com>
Reviewed-by: default avatarStephan Müller <smueller@chronox.de>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent c2681990

crypto/algif_aead.c

+1 −1
Original line number Diff line number Diff line
@@ -661,9 +661,9 @@ static int aead_recvmsg_sync(struct socket *sock, struct msghdr *msg, int flags) 
unlock:

	list_for_each_entry_safe(rsgl, tmp, &ctx->list, list) {

		af_alg_free_sg(&rsgl->sgl);

		list_del(&rsgl->list);

		if (rsgl != &ctx->first_rsgl)

			sock_kfree_s(sk, rsgl, sizeof(*rsgl));

		list_del(&rsgl->list);

	}

	INIT_LIST_HEAD(&ctx->list);

	aead_wmem_wakeup(sk);