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@vger.kernel.org> #6.5+
Reported-by: Tatu Heikkilä <tatu.heikkila@gmail.com>
Reviewed-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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)