korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-09-22 22:11:38 +08:00
Code Issues Packages Projects Releases Wiki Activity

ksmbd: fix out of bounds in smb3_decrypt_req()

Browse Source 
smb3_decrypt_req() validate if pdu_length is smaller than
smb2_transform_hdr size.

Reported-by: zdi-disclosures@trendmicro.com # ZDI-CAN-21589
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Namjae Jeon 2023-07-22 00:09:28 +09:00 committed by Steve French
parent 2b57a4322b
commit dc318846f3
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
fs/smb/server/smb2pdu.c
View File

@ -8614,7 +8614,8 @@ int smb3_decrypt_req(struct ksmbd_work *work)
struct smb2_transform_hdr *tr_hdr = smb2_get_msg(buf);
int rc = 0;
if (buf_data_size < sizeof(struct smb2_hdr)) {
if (pdu_length < sizeof(struct smb2_transform_hdr) ||
buf_data_size < sizeof(struct smb2_hdr)) {
pr_err("Transform message is too small (%u)\n",
pdu_length);
return -ECONNABORTED;