xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

scsi: qedf: Ensure the copied buf is NUL terminated

Browse Source 
[ Upstream commit d0184a375ee797eb657d74861ba0935b6e405c62 ]

Currently, we allocate a count-sized kernel buffer and copy count from
userspace to that buffer. Later, we use kstrtouint on this buffer but we
don't ensure that the string is terminated inside the buffer, this can
lead to OOB read when using kstrtouint. Fix this issue by using
memdup_user_nul instead of memdup_user.

Fixes: 61d8658b4a ("scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework.")
Signed-off-by: Bui Quang Minh <minhquangbui99@gmail.com>
Link: https://lore.kernel.org/r/20240424-fix-oob-read-v2-4-f1f1b53a10f4@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Bui Quang Minh
2024-04-24 21:44:21 +07:00
committed by Greg Kroah-Hartman
parent 00b425ff08
commit 769b9fd2af
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/scsi/qedf/qedf_debugfs.c
View File

@@ -170,7 +170,7 @@ qedf_dbg_debug_cmd_write(struct file *filp, const char __user *buffer,
if (!count || *ppos)
return 0;
kern_buf = memdup_user(buffer, count);
kern_buf = memdup_user_nul(buffer, count);
if (IS_ERR(kern_buf))
return PTR_ERR(kern_buf);