Messages in this thread | | | From | Michal Suchanek <> | Subject | [PATCH v3 0/6] KEXEC_SIG with appended signature | Date | Fri, 7 Jan 2022 12:53:44 +0100 |
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Hello,
This is a refresh of the KEXEC_SIG series.
This adds KEXEC_SIG support on powerpc and deduplicates the code dealing with appended signatures in the kernel.
powerpc supports IMA_KEXEC but that's an exception rather than the norm. On the other hand, KEXEC_SIG is portable across platforms.
For distributions to have uniform security features across platforms one option should be used on all platforms.
Thanks
Michal
Previous revision: https://lore.kernel.org/linuxppc-dev/cover.1637862358.git.msuchanek@suse.de/ Patched kernel tree: https://github.com/hramrach/kernel/tree/kexec_sig
Michal Suchanek (6): s390/kexec_file: Don't opencode appended signature check. powerpc/kexec_file: Add KEXEC_SIG support. kexec_file: Don't opencode appended signature verification. module: strip the signature marker in the verification function. module: Use key_being_used_for for log messages in verify_appended_signature module: Move duplicate mod_check_sig users code to mod_parse_sig
arch/powerpc/Kconfig | 16 +++++++ arch/powerpc/kexec/elf_64.c | 14 ++++++ arch/s390/Kconfig | 2 +- arch/s390/kernel/machine_kexec_file.c | 43 ++---------------- crypto/asymmetric_keys/asymmetric_type.c | 1 + include/linux/module_signature.h | 1 + include/linux/verification.h | 4 ++ kernel/module-internal.h | 2 - kernel/module.c | 12 +++-- kernel/module_signature.c | 56 +++++++++++++++++++++++- kernel/module_signing.c | 33 +++++++------- security/integrity/ima/ima_modsig.c | 22 ++-------- 12 files changed, 119 insertions(+), 87 deletions(-)
-- 2.31.1
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