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Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

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Pull drm/qxl fix from Dave Airlie:
 "Bad me forgot an access check, possible security issue, but since this
  is the first kernel with it, should be fine to just put it in now"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/qxl: add missing access check for execbuffer ioctl
This commit is contained in:
Linus Torvalds 2013-06-29 11:32:05 -07:00
commit 6554431937
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/qxl/qxl_ioctl.c
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@ -171,6 +171,11 @@ static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data,
if (user_cmd.command_size > PAGE_SIZE - sizeof(union qxl_release_info))
return -EINVAL;
if (!access_ok(VERIFY_READ,
(void *)(unsigned long)user_cmd.command,
user_cmd.command_size))
return -EFAULT;
ret = qxl_alloc_release_reserved(qdev,
sizeof(union qxl_release_info) +
user_cmd.command_size,