Kernel/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2025-01-01 02:36:02 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

ksmbd: fix Out-of-Bounds Write in ksmbd_vfs_stream_write

Browse Source 
An offset from client could be a negative value, It could allows
to write data outside the bounds of the allocated buffer.
Note that this issue is coming when setting
'vfs objects = streams_xattr parameter' in ksmbd.conf.

Cc: stable@vger.kernel.org # v5.15+
Reported-by: Jordy Zomer <jordyzomer@google.com>
Signed-off-by: Jordy Zomer <jordyzomer@google.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Jordy Zomer 2024-11-28 09:33:25 +09:00 committed by Steve French
parent fc342cf86e
commit 313dab0822
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
fs/smb/server/smb2pdu.c
View File

@ -6882,6 +6882,8 @@ int smb2_write(struct ksmbd_work *work)
}
offset = le64_to_cpu(req->Offset);
if (offset < 0)
return -EINVAL;
length = le32_to_cpu(req->Length);
if (req->Channel == SMB2_CHANNEL_RDMA_V1 ||