brain-hackers_pepepper-mirror/linux-brain
1
0
Fork 0
mirror of https://github.com/brain-hackers/linux-brain.git synced 2024-06-09 23:36:23 +09:00
Code Issues Projects Releases Wiki Activity

Documentation/module-signing.txt: Note need for version info if reusing a key

Browse Source 
commit b8612e517c upstream.

Signing a module should only make it trusted by the specific kernel it
was built for, not anything else.  If a module signing key is used for
multiple ABI-incompatible kernels, the modules need to include enough
version information to distinguish them.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ben Hutchings 2016-04-28 09:24:05 +09:30 committed by Greg Kroah-Hartman
parent bc2318cc76
commit cc4860773f
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Documentation/module-signing.txt
View File

@ -271,3 +271,9 @@ Since the private key is used to sign modules, viruses and malware could use
the private key to sign modules and compromise the operating system. The
private key must be either destroyed or moved to a secure location and not kept
in the root node of the kernel source tree.
If you use the same private key to sign modules for multiple kernel
configurations, you must ensure that the module version information is
sufficient to prevent loading a module into a different kernel. Either
set CONFIG_MODVERSIONS=y or ensure that each configuration has a different
kernel release string by changing EXTRAVERSION or CONFIG_LOCALVERSION.