Evolution-X-Devices/kernel_realme_nemo
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

s390/pkey: Wipe sensitive data on failure

Browse Source 
[ Upstream commit 1d8c270de5eb74245d72325d285894a577a945d9 ]

Wipe sensitive data from stack also if the copy_to_user() fails.

Suggested-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Ingo Franzki <ifranzki@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Holger Dengler <dengler@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
(cherry picked from commit 6e2e374403bf73140d0efc9541cb1b3bea55ac02)
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
This commit is contained in:
Holger Dengler
2024-05-07 17:03:18 +02:00
committed by Ansh
parent aba5271ce0
commit 186727353a
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/s390/crypto/pkey_api.c
View File

@@ -1088,7 +1088,7 @@ static long pkey_unlocked_ioctl(struct file *filp, unsigned int cmd,
if (rc)
break;
if (copy_to_user(ucs, &kcs, sizeof(kcs)))
return -EFAULT;
rc = -EFAULT;
memzero_explicit(&kcs, sizeof(kcs));
break;
}
@@ -1119,7 +1119,7 @@ static long pkey_unlocked_ioctl(struct file *filp, unsigned int cmd,
if (rc)
break;
if (copy_to_user(ucp, &kcp, sizeof(kcp)))
return -EFAULT;
rc = -EFAULT;
memzero_explicit(&kcp, sizeof(kcp));
break;
}