diff options
| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2022-08-02 15:21:18 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-08-02 15:21:18 -0700 |
| commit | 043402495deb5ccc3b3479dc69a03f990c41ea8d (patch) | |
| tree | c8f7908efeabd007011a1a0343ff66bdbc807344 /arch/s390/kernel | |
| parent | Merge tag 'safesetid-6.0' of https://github.com/micah-morton/linux (diff) | |
| parent | Merge remote-tracking branch 'linux-integrity/kexec-keyrings' into next-integrity (diff) | |
| download | linux-dev-043402495deb5ccc3b3479dc69a03f990c41ea8d.tar.xz linux-dev-043402495deb5ccc3b3479dc69a03f990c41ea8d.zip | |
Merge tag 'integrity-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
Pull integrity updates from Mimi Zohar:
"Aside from the one EVM cleanup patch, all the other changes are kexec
related.
On different architectures different keyrings are used to verify the
kexec'ed kernel image signature. Here are a number of preparatory
cleanup patches and the patches themselves for making the keyrings -
builtin_trusted_keyring, .machine, .secondary_trusted_keyring, and
.platform - consistent across the different architectures"
* tag 'integrity-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
kexec, KEYS, s390: Make use of built-in and secondary keyring for signature verification
arm64: kexec_file: use more system keyrings to verify kernel image signature
kexec, KEYS: make the code in bzImage64_verify_sig generic
kexec: clean up arch_kexec_kernel_verify_sig
kexec: drop weak attribute from functions
kexec_file: drop weak attribute from functions
evm: Use IS_ENABLED to initialize .enabled
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/machine_kexec_file.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/arch/s390/kernel/machine_kexec_file.c b/arch/s390/kernel/machine_kexec_file.c index 8f43575a4dd3..fc6d5f58debe 100644 --- a/arch/s390/kernel/machine_kexec_file.c +++ b/arch/s390/kernel/machine_kexec_file.c @@ -31,6 +31,7 @@ int s390_verify_sig(const char *kernel, unsigned long kernel_len) const unsigned long marker_len = sizeof(MODULE_SIG_STRING) - 1; struct module_signature *ms; unsigned long sig_len; + int ret; /* Skip signature verification when not secure IPLed. */ if (!ipl_secure_flag) @@ -65,11 +66,18 @@ int s390_verify_sig(const char *kernel, unsigned long kernel_len) return -EBADMSG; } - return verify_pkcs7_signature(kernel, kernel_len, - kernel + kernel_len, sig_len, - VERIFY_USE_PLATFORM_KEYRING, - VERIFYING_MODULE_SIGNATURE, - NULL, NULL); + ret = verify_pkcs7_signature(kernel, kernel_len, + kernel + kernel_len, sig_len, + VERIFY_USE_SECONDARY_KEYRING, + VERIFYING_MODULE_SIGNATURE, + NULL, NULL); + if (ret == -ENOKEY && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING)) + ret = verify_pkcs7_signature(kernel, kernel_len, + kernel + kernel_len, sig_len, + VERIFY_USE_PLATFORM_KEYRING, + VERIFYING_MODULE_SIGNATURE, + NULL, NULL); + return ret; } #endif /* CONFIG_KEXEC_SIG */ |