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authorLinus Torvalds <torvalds@linux-foundation.org>2019-03-10 17:32:04 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-03-10 17:32:04 -0700
commitc3665a6be5de16cf6670a00003642114c44d8a70 (patch)
tree118ea5fd3cca09eeac0d7dc550915d0e338e4dfe /arch
parent12ad143e1b803e541e48b8ba40f550250259ecdd (diff)
parent2e884fc9759d8816630d3c30694721a39b7396e0 (diff)
downloadlinux-c3665a6be5de16cf6670a00003642114c44d8a70.tar.bz2
Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull integrity updates from James Morris: "Mimi Zohar says: 'Linux 5.0 introduced the platform keyring to allow verifying the IMA kexec kernel image signature using the pre-boot keys. This pull request similarly makes keys on the platform keyring accessible for verifying the PE kernel image signature. Also included in this pull request is a new IMA hook that tags tmp files, in policy, indicating the file hash needs to be calculated. The remaining patches are cleanup'" * 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: evm: Use defined constant for UUID representation ima: define ima_post_create_tmpfile() hook and add missing call evm: remove set but not used variable 'xattr' encrypted-keys: fix Opt_err/Opt_error = -1 kexec, KEYS: Make use of platform keyring for signature verify integrity, KEYS: add a reference to platform keyring
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/kexec-bzimage64.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c
index 1f3b77367948..22f60dd26460 100644
--- a/arch/x86/kernel/kexec-bzimage64.c
+++ b/arch/x86/kernel/kexec-bzimage64.c
@@ -538,9 +538,17 @@ static int bzImage64_cleanup(void *loader_data)
#ifdef CONFIG_KEXEC_BZIMAGE_VERIFY_SIG
static int bzImage64_verify_sig(const char *kernel, unsigned long kernel_len)
{
- return verify_pefile_signature(kernel, kernel_len,
- VERIFY_USE_SECONDARY_KEYRING,
- VERIFYING_KEXEC_PE_SIGNATURE);
+ int ret;
+
+ ret = verify_pefile_signature(kernel, kernel_len,
+ VERIFY_USE_SECONDARY_KEYRING,
+ VERIFYING_KEXEC_PE_SIGNATURE);
+ if (ret == -ENOKEY && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING)) {
+ ret = verify_pefile_signature(kernel, kernel_len,
+ VERIFY_USE_PLATFORM_KEYRING,
+ VERIFYING_KEXEC_PE_SIGNATURE);
+ }
+ return ret;
}
#endif