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-rw-r--r--security/integrity/ima/Kconfig3
1 files changed, 2 insertions, 1 deletions
diff --git a/security/integrity/ima/Kconfig b/security/integrity/ima/Kconfig
index 60a511c6b583..684425936c53 100644
--- a/security/integrity/ima/Kconfig
+++ b/security/integrity/ima/Kconfig
@@ -270,7 +270,8 @@ config IMA_KEYRINGS_PERMIT_SIGNED_BY_BUILTIN_OR_SECONDARY
help
Keys may be added to the IMA or IMA blacklist keyrings, if the
key is validly signed by a CA cert in the system built-in or
- secondary trusted keyrings.
+ secondary trusted keyrings. The key must also have the
+ digitalSignature usage set.
Intermediate keys between those the kernel has compiled in and the
IMA keys to be added may be added to the system secondary keyring,