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author | Josh Boyer <jwboyer@fedoraproject.org> | 2014-08-20 13:22:24 -0400 |
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committer | Josh Boyer <jwboyer@fedoraproject.org> | 2014-08-20 13:22:24 -0400 |
commit | 6a91557e4cd508858eca5aba5406a9109861d4de (patch) | |
tree | c57990ccc4a28a9933db2aebba1006f46c619f44 /asus-wmi-Restrict-debugfs-interface-when-module-load.patch | |
parent | a99be7d4cf2fae68a0562a7687d89ee61c6b9f98 (diff) | |
download | kernel-6a91557e4cd508858eca5aba5406a9109861d4de.tar.gz kernel-6a91557e4cd508858eca5aba5406a9109861d4de.tar.xz kernel-6a91557e4cd508858eca5aba5406a9109861d4de.zip |
Patch file cleanup
Do a couple things here:
- Split the mega-patches into individual patches. Should help with rebasing.
- Make all patches 'git am' acceptable.
There should be no functional or actual code differences from before
Diffstat (limited to 'asus-wmi-Restrict-debugfs-interface-when-module-load.patch')
-rw-r--r-- | asus-wmi-Restrict-debugfs-interface-when-module-load.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/asus-wmi-Restrict-debugfs-interface-when-module-load.patch b/asus-wmi-Restrict-debugfs-interface-when-module-load.patch new file mode 100644 index 000000000..781c8e0ce --- /dev/null +++ b/asus-wmi-Restrict-debugfs-interface-when-module-load.patch @@ -0,0 +1,54 @@ +From ed8fc77bea869c0277b035b2b79470ba350c31e0 Mon Sep 17 00:00:00 2001 +From: Matthew Garrett <matthew.garrett@nebula.com> +Date: Fri, 9 Mar 2012 08:46:50 -0500 +Subject: [PATCH] asus-wmi: Restrict debugfs interface when module loading is + restricted + +We have no way of validating what all of the Asus WMI methods do on a +given machine, and there's a risk that some will allow hardware state to +be manipulated in such a way that arbitrary code can be executed in the +kernel, circumventing module loading restrictions. Prevent that if any of +these features are enabled. + +Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com> +--- + drivers/platform/x86/asus-wmi.c | 9 +++++++++ + 1 file changed, 9 insertions(+) + +diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c +index 21fc932da3a1..c6d42ad95c08 100644 +--- a/drivers/platform/x86/asus-wmi.c ++++ b/drivers/platform/x86/asus-wmi.c +@@ -1590,6 +1590,9 @@ static int show_dsts(struct seq_file *m, void *data) + int err; + u32 retval = -1; + ++ if (secure_modules()) ++ return -EPERM; ++ + err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval); + + if (err < 0) +@@ -1606,6 +1609,9 @@ static int show_devs(struct seq_file *m, void *data) + int err; + u32 retval = -1; + ++ if (secure_modules()) ++ return -EPERM; ++ + err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param, + &retval); + +@@ -1630,6 +1636,9 @@ static int show_call(struct seq_file *m, void *data) + union acpi_object *obj; + acpi_status status; + ++ if (secure_modules()) ++ return -EPERM; ++ + status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID, + 1, asus->debug.method_id, + &input, &output); +-- +1.9.3 + |