This is a note to let you know that I've just added the patch titled
dm crypt: Fix reqsize in crypt_iv_eboiv_gen
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
dm-crypt-fix-reqsize-in-crypt_iv_eboiv_gen.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 152d0bcdf1efcb54a4fa20f694e9c7bbb6d06cbf Mon Sep 17 00:00:00 2001
From: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 6 Oct 2023 09:41:55 +0800
Subject: dm crypt: Fix reqsize in crypt_iv_eboiv_gen
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From: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
commit 152d0bcdf1efcb54a4fa20f694e9c7bbb6d06cbf upstream.
A skcipher_request object is made up of struct skcipher_request
followed by a variable-sized trailer. The allocation of the
skcipher_request and IV in crypt_iv_eboiv_gen is missing the
memory for struct skcipher_request. Fix it by adding it to
reqsize.
Fixes: e3023094dffb ("dm crypt: Avoid using MAX_CIPHER_BLOCKSIZE")
Cc: <stable@xxxxxxxxxxxxxxx> #6.5+
Reported-by: Tatu Heikkilä <tatu.heikkila@xxxxxxxxx>
Reviewed-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/dm-crypt.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index f2662c21a6df..5315fd261c23 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -753,7 +753,8 @@ static int crypt_iv_eboiv_gen(struct crypt_config *cc, u8 *iv,
int err;
u8 *buf;
- reqsize = ALIGN(crypto_skcipher_reqsize(tfm), __alignof__(__le64));
+ reqsize = sizeof(*req) + crypto_skcipher_reqsize(tfm);
+ reqsize = ALIGN(reqsize, __alignof__(__le64));
req = kmalloc(reqsize + cc->iv_size, GFP_NOIO);
if (!req)
--
2.42.0
Patches currently in stable-queue which might be from herbert@xxxxxxxxxxxxxxxxxxx are
queue-6.5/dm-crypt-fix-reqsize-in-crypt_iv_eboiv_gen.patch
