diff options
| author | Herbert Xu <[email protected]> | 2023-10-06 01:41:55 +0000 |
|---|---|---|
| committer | Herbert Xu <[email protected]> | 2023-10-06 02:39:18 +0000 |
| commit | 152d0bcdf1efcb54a4fa20f694e9c7bbb6d06cbf (patch) | |
| tree | 7962c9ec572e92fca5d24af8c66fe451552a9a81 | |
| parent | crypto: sm2 - Fix crash caused by uninitialized context (diff) | |
| download | kernel-152d0bcdf1efcb54a4fa20f694e9c7bbb6d06cbf.tar.gz kernel-152d0bcdf1efcb54a4fa20f694e9c7bbb6d06cbf.zip | |
dm crypt: Fix reqsize in crypt_iv_eboiv_gen
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: <[email protected]> #6.5+
Reported-by: Tatu Heikkilä <[email protected]>
Reviewed-by: Mike Snitzer <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
| -rw-r--r-- | drivers/md/dm-crypt.c | 3 |
1 files changed, 2 insertions, 1 deletions
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) |