[PATCH AUTOSEL 4.14 082/115] fbdev: sbuslib: use checked version of put_user()
From: Sasha Levin <sashal@kernel.org>
Date: 2019-11-13 02:11:31
Also in:
dri-devel, lkml, stable
Subsystem:
framebuffer layer, the rest · Maintainers:
Helge Deller, Linus Torvalds
From: Dan Carpenter <redacted> [ Upstream commit d8bad911e5e55e228d59c0606ff7e6b8131ca7bf ] I'm not sure why the code assumes that only the first put_user() needs an access_ok() check. I have made all the put_user() and get_user() calls checked. Signed-off-by: Dan Carpenter <redacted> Cc: Philippe Ombredanne <redacted> Cc: Mathieu Malaterre <redacted> Cc: Peter Malone <redacted>, Signed-off-by: Bartlomiej Zolnierkiewicz <redacted> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/video/fbdev/sbuslib.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-)
diff --git a/drivers/video/fbdev/sbuslib.c b/drivers/video/fbdev/sbuslib.c
index a436d44f1b7fb..90c51330969c2 100644
--- a/drivers/video/fbdev/sbuslib.c
+++ b/drivers/video/fbdev/sbuslib.c@@ -106,11 +106,11 @@ int sbusfb_ioctl_helper(unsigned long cmd, unsigned long arg, struct fbtype __user *f = (struct fbtype __user *) arg; if (put_user(type, &f->fb_type) || - __put_user(info->var.yres, &f->fb_height) || - __put_user(info->var.xres, &f->fb_width) || - __put_user(fb_depth, &f->fb_depth) || - __put_user(0, &f->fb_cmsize) || - __put_user(fb_size, &f->fb_cmsize)) + put_user(info->var.yres, &f->fb_height) || + put_user(info->var.xres, &f->fb_width) || + put_user(fb_depth, &f->fb_depth) || + put_user(0, &f->fb_cmsize) || + put_user(fb_size, &f->fb_cmsize)) return -EFAULT; return 0; }
@@ -125,10 +125,10 @@ int sbusfb_ioctl_helper(unsigned long cmd, unsigned long arg, unsigned int index, count, i; if (get_user(index, &c->index) || - __get_user(count, &c->count) || - __get_user(ured, &c->red) || - __get_user(ugreen, &c->green) || - __get_user(ublue, &c->blue)) + get_user(count, &c->count) || + get_user(ured, &c->red) || + get_user(ugreen, &c->green) || + get_user(ublue, &c->blue)) return -EFAULT; cmap.len = 1;
@@ -165,10 +165,10 @@ int sbusfb_ioctl_helper(unsigned long cmd, unsigned long arg, u8 red, green, blue; if (get_user(index, &c->index) || - __get_user(count, &c->count) || - __get_user(ured, &c->red) || - __get_user(ugreen, &c->green) || - __get_user(ublue, &c->blue)) + get_user(count, &c->count) || + get_user(ured, &c->red) || + get_user(ugreen, &c->green) || + get_user(ublue, &c->blue)) return -EFAULT; if (index + count > cmap->len)
--
2.20.1