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Merge branch 'bugfix/memprot_bypass' into 'master'

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System/Security: Memprot bypassing mitigation

Closes IDF-2700

See merge request espressif/esp-idf!13795
This commit is contained in:
Angus Gratton 2021-06-09 00:02:30 +00:00
commit d995086621
1 changed files with 6 additions and 0 deletions
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6
components/esp_system/port/cpu_start.c
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@ -480,6 +480,12 @@ void IRAM_ATTR call_start_cpu0(void)
esp_cache_err_int_init();
#if CONFIG_ESP_SYSTEM_MEMPROT_FEATURE
// Memprot cannot be locked during OS startup as the lock-on prevents any PMS changes until a next reboot
// If such a situation appears, it is likely an malicious attempt to bypass the system safety setup -> print error & reset
if ( esp_memprot_is_locked_any() ) {
ESP_EARLY_LOGE(TAG, "Memprot feature locked after the system reset! Potential safety corruption, rebooting.");
esp_restart_noos_dig();
}
#if CONFIG_ESP_SYSTEM_MEMPROT_FEATURE_LOCK
esp_memprot_set_prot(true, true, NULL);
#else