diff options
| author | David Howells <dhowells@redhat.com> | 2024-09-12 16:58:48 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-09-18 19:24:10 +0200 |
| commit | b9d510e085040f1ba549f26e41eb7c7f6ba1cb8f (patch) | |
| tree | 86a5239fd47d881d50e8361644c9477503603792 | |
| parent | 6ec7cbc7f57866388f03bf75eb47e6f515debc1c (diff) | |
cifs: Fix signature miscalculation
[ Upstream commit 5a20b7cb0d8d3ee490a8e088dc2584aa782e3355 ]
Fix the calculation of packet signatures by adding the offset into a page
in the read or write data payload when hashing the pages from it.
Fixes: 39bc58203f04 ("cifs: Add a function to Hash the contents of an iterator")
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Tom Talpey <tom@talpey.com>
Reviewed-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | fs/smb/client/cifsencrypt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/smb/client/cifsencrypt.c b/fs/smb/client/cifsencrypt.c index 6322f0f68a17..b0473c2567fe 100644 --- a/fs/smb/client/cifsencrypt.c +++ b/fs/smb/client/cifsencrypt.c @@ -129,7 +129,7 @@ static ssize_t cifs_shash_xarray(const struct iov_iter *iter, ssize_t maxsize, for (j = foffset / PAGE_SIZE; j < npages; j++) { len = min_t(size_t, maxsize, PAGE_SIZE - offset); p = kmap_local_page(folio_page(folio, j)); - ret = crypto_shash_update(shash, p, len); + ret = crypto_shash_update(shash, p + offset, len); kunmap_local(p); if (ret < 0) return ret; |