diff options
| author |   Coiby Xu <coxu@redhat.com> | 2022-07-13 15:21:11 +0800 |
|---|---|---|
| committer |   Mimi Zohar <zohar@linux.ibm.com> | 2022-07-13 10:13:41 -0400 |
| commit | af16df54b89dee72df253abc5e7b5e8a6d16c11c (patch) | |
| tree | d236aeb2c9b99d9e452b6382f016d3e1bc92fc8f /include/linux/kexec.h | |
| parent | ima: Fix a potential integer overflow in ima_appraise_measurement (diff) | |
| download | linux-dev-af16df54b89dee72df253abc5e7b5e8a6d16c11c.tar.xz linux-dev-af16df54b89dee72df253abc5e7b5e8a6d16c11c.zip | |
ima: force signature verification when CONFIG_KEXEC_SIG is configured
Currently, an unsigned kernel could be kexec'ed when IMA arch specific
policy is configured unless lockdown is enabled. Enforce kernel
signature verification check in the kexec_file_load syscall when IMA
arch specific policy is configured.
Fixes: 99d5cadfde2b ("kexec_file: split KEXEC_VERIFY_SIG into KEXEC_SIG and KEXEC_SIG_FORCE")
Reported-and-suggested-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Diffstat (limited to '')
| -rw-r--r-- | include/linux/kexec.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/kexec.h b/include/linux/kexec.h index ce6536f1d269..475683cd67f1 100644 --- a/include/linux/kexec.h +++ b/include/linux/kexec.h @@ -452,6 +452,12 @@ static inline int kexec_crash_loaded(void) { return 0; } #define kexec_in_progress false #endif /* CONFIG_KEXEC_CORE */ +#ifdef CONFIG_KEXEC_SIG +void set_kexec_sig_enforced(void); +#else +static inline void set_kexec_sig_enforced(void) {} +#endif + #endif /* !defined(__ASSEBMLY__) */ #endif /* LINUX_KEXEC_H */ |