GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-07-23 07:12:09 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

ARM: 8797/1: spectre-v1.1: harden __copy_to_user

Browse source 
Sanitize user pointer given to __copy_to_user, both for standard version
and memcopy version of the user accessor.

Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Julien Thierry 2018-09-11 10:15:12 +01:00 • committed by Russell King
parent afaf6838f4
commit a1d09e0742
2 changed files with 7 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

3
arch/arm/lib/uaccess_with_memcpy.c
View file

@ -152,7 +152,8 @@ arm_copy_to_user(void __user *to, const void *from, unsigned long n)
n = __copy_to_user_std(to, from, n);
uaccess_restore(ua_flags);
} else {
n = __copy_to_user_memcpy(to, from, n);
n = __copy_to_user_memcpy(uaccess_mask_range_ptr(to, n),
from, n);
}
return n;
}