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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org,
	Sarthak Kukreti <sarthakkukreti@google.com>,
	Kees Cook <keescook@chromium.org>,
	Mike Snitzer <snitzer@kernel.org>
Subject: [PATCH 4.9 09/12] dm verity: set DM_TARGET_IMMUTABLE feature flag
Date: Fri,  3 Jun 2022 19:39:35 +0200	[thread overview]
Message-ID: <20220603173812.801934643@linuxfoundation.org> (raw)
In-Reply-To: <20220603173812.524184588@linuxfoundation.org>

From: Sarthak Kukreti <sarthakkukreti@google.com>

commit 4caae58406f8ceb741603eee460d79bacca9b1b5 upstream.

The device-mapper framework provides a mechanism to mark targets as
immutable (and hence fail table reloads that try to change the target
type). Add the DM_TARGET_IMMUTABLE flag to the dm-verity target's
feature flags to prevent switching the verity target with a different
target type.

Fixes: a4ffc152198e ("dm: add verity target")
Cc: stable@vger.kernel.org
Signed-off-by: Sarthak Kukreti <sarthakkukreti@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/md/dm-verity-target.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/md/dm-verity-target.c
+++ b/drivers/md/dm-verity-target.c
@@ -1056,6 +1056,7 @@ bad:
 
 static struct target_type verity_target = {
 	.name		= "verity",
+	.features	= DM_TARGET_IMMUTABLE,
 	.version	= {1, 3, 0},
 	.module		= THIS_MODULE,
 	.ctr		= verity_ctr,



  parent reply	other threads:[~2022-06-03 17:40 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-03 17:39 [PATCH 4.9 00/12] 4.9.317-rc1 review Greg Kroah-Hartman
2022-06-03 17:39 ` [PATCH 4.9 01/12] net: af_key: check encryption module availability consistency Greg Kroah-Hartman
2022-06-03 17:39 ` [PATCH 4.9 02/12] drivers: i2c: thunderx: Allow driver to work with ACPI defined TWSI controllers Greg Kroah-Hartman
2022-06-03 17:39 ` [PATCH 4.9 03/12] assoc_array: Fix BUG_ON during garbage collect Greg Kroah-Hartman
2022-06-03 17:39 ` [PATCH 4.9 04/12] drm/i915: Fix -Wstringop-overflow warning in call to intel_read_wm_latency() Greg Kroah-Hartman
2022-06-03 17:39 ` [PATCH 4.9 05/12] block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern Greg Kroah-Hartman
2022-06-03 17:39 ` [PATCH 4.9 06/12] exec: Force single empty string when argv is empty Greg Kroah-Hartman
2022-06-03 17:39 ` [PATCH 4.9 07/12] dm crypt: make printing of the key constant-time Greg Kroah-Hartman
2022-06-03 17:39 ` [PATCH 4.9 08/12] dm stats: add cond_resched when looping over entries Greg Kroah-Hartman
2022-06-03 17:39 ` Greg Kroah-Hartman [this message]
2022-06-03 17:39 ` [PATCH 4.9 10/12] tpm: ibmvtpm: Correct the return value in tpm_ibmvtpm_probe() Greg Kroah-Hartman
2022-06-03 17:39 ` [PATCH 4.9 11/12] NFSD: Fix possible sleep during nfsd4_release_lockowner() Greg Kroah-Hartman
2022-06-03 17:39 ` [PATCH 4.9 12/12] bpf: Enlarge offset check value to INT_MAX in bpf_skb_{load,store}_bytes Greg Kroah-Hartman
2022-06-04 18:38 ` [PATCH 4.9 00/12] 4.9.317-rc1 review Naresh Kamboju
2022-06-04 18:53 ` Guenter Roeck
2022-06-06  8:40 ` Pavel Machek

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