diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-12 10:15:26 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-09-12 10:15:26 +0300 |
| commit | fc9104d5d7172d2cb6c672abeb964242aa735b34 (patch) | |
| tree | 87f8aedceff2d578b073d33791e4696a7aba9185 /security | |
| parent | ab57f86198d6ff20371613d4a02fd4841972a5c0 (diff) | |
| parent | 9395452b4aab7bc2475ef8935b4a4fb99d778d70 (diff) | |
| download | linux-fc9104d5d7172d2cb6c672abeb964242aa735b34.tar.xz | |
Merge 4.8-rc6 into usb-next
We want the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'security')
| -rw-r--r-- | security/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/security/Kconfig b/security/Kconfig index da10d9b573a4..118f4549404e 100644 --- a/security/Kconfig +++ b/security/Kconfig @@ -147,6 +147,17 @@ config HARDENED_USERCOPY or are part of the kernel text. This kills entire classes of heap overflow exploits and similar kernel memory exposures. +config HARDENED_USERCOPY_PAGESPAN + bool "Refuse to copy allocations that span multiple pages" + depends on HARDENED_USERCOPY + depends on EXPERT + help + When a multi-page allocation is done without __GFP_COMP, + hardened usercopy will reject attempts to copy it. There are, + however, several cases of this in the kernel that have not all + been removed. This config is intended to be used only while + trying to find such users. + source security/selinux/Kconfig source security/smack/Kconfig source security/tomoyo/Kconfig |