diff --git a/.gitlab/ci/host-test.yml b/.gitlab/ci/host-test.yml
index 102d0ef0b2..306177b32c 100644
--- a/.gitlab/ci/host-test.yml
+++ b/.gitlab/ci/host-test.yml
@@ -307,7 +307,6 @@ test_pytest_qemu:
       --qemu-extra-args \"-global driver=timer.$IDF_TARGET.timg,property=wdt_disable,value=true\"
 
 test_pytest_linux:
-  allow_failure: true # IDFCI-2784 [v5.5, v5.4] test_pytest_linux fails on ubuntu 24.04
   extends:
     - .host_test_template
     - .before_script:build
diff --git a/components/esp_app_format/test_apps/main/test_app_desc.c b/components/esp_app_format/test_apps/main/test_app_desc.c
index 22b63f7b14..588ebf52ba 100644
--- a/components/esp_app_format/test_apps/main/test_app_desc.c
+++ b/components/esp_app_format/test_apps/main/test_app_desc.c
@@ -29,7 +29,7 @@ TEST(esp_app_format, esp_app_get_elf_sha256_test)
     int res;
     size_t len;
 
-    char ref_sha256[sha256_hex_len + 1];
+    char ref_sha256[sha256_hex_len + 2];
     const esp_app_desc_t* desc = esp_app_get_description();
     for (int i = 0; i < sizeof(ref_sha256) / 2; ++i) {
         snprintf(ref_sha256 + 2 * i, 3, "%02x", desc->app_elf_sha256[i]);
diff --git a/components/heap/test_apps/host_test_linux/main/test_heap_linux.c b/components/heap/test_apps/host_test_linux/main/test_heap_linux.c
index 8256993258..a00e7c5fd2 100644
--- a/components/heap/test_apps/host_test_linux/main/test_heap_linux.c
+++ b/components/heap/test_apps/host_test_linux/main/test_heap_linux.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2022-2023 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -50,7 +50,7 @@ TEST_CASE("Alloc APIs", "[heap]")
 
 TEST_CASE("Size APIs", "[heap]")
 {
-    /* These functions doesnt provide any useful information on linux
+    /* These functions doesn't provide any useful information on linux
        These "tests" are simply included to check that all the functions in the header
        are actually mocked
     */
@@ -71,21 +71,22 @@ TEST_CASE("Size APIs", "[heap]")
     TEST_ASSERT_TRUE(heap_caps_get_allocated_size(&info) == 0);
 }
 
-#define TEST_ALIGNMENT 0x1F
+#define TEST_ALIGNMENT 0x20
 
 TEST_CASE("Aligned alloc APIs", "[heap]")
 {
-    uint8_t * p = heap_caps_aligned_alloc(TEST_ALIGNMENT, MALLOC_LEN, MALLOC_CAP_DEFAULT);
+    const int aligned_len = MALLOC_LEN - (MALLOC_LEN % TEST_ALIGNMENT);
+    uint8_t * p = heap_caps_aligned_alloc(TEST_ALIGNMENT, aligned_len, MALLOC_CAP_DEFAULT);
     TEST_ASSERT_NOT_NULL(p);
     TEST_ASSERT_TRUE(((intptr_t)p & (0x1F -1)) == 0);
-    memset(p, TEST_VAL, MALLOC_LEN);
-    TEST_ASSERT_EACH_EQUAL_HEX8(TEST_VAL, p, MALLOC_LEN);
+    memset(p, TEST_VAL, aligned_len);
+    TEST_ASSERT_EACH_EQUAL_HEX8(TEST_VAL, p, aligned_len);
     heap_caps_free(p);
 
-    p = heap_caps_aligned_calloc(TEST_ALIGNMENT, MALLOC_LEN, sizeof(uint8_t), MALLOC_CAP_DEFAULT);
+    p = heap_caps_aligned_calloc(TEST_ALIGNMENT, aligned_len, sizeof(uint8_t), MALLOC_CAP_DEFAULT);
     TEST_ASSERT_NOT_NULL(p);
     TEST_ASSERT_TRUE(((intptr_t)p & (0x1F -1)) == 0);
-    TEST_ASSERT_EACH_EQUAL_HEX8(0, p, MALLOC_LEN);
+    TEST_ASSERT_EACH_EQUAL_HEX8(0, p, aligned_len);
     heap_caps_free(p);
 }
 
diff --git a/components/log/host_test/log_test/main/log_test.cpp b/components/log/host_test/log_test/main/log_test.cpp
index 4582ffb21b..8db973ca79 100644
--- a/components/log/host_test/log_test/main/log_test.cpp
+++ b/components/log/host_test/log_test/main/log_test.cpp
@@ -95,7 +95,7 @@ private:
     int print_to_buffer(const char *format, va_list args)
     {
         // Added support for multi-line log, for example ESP_LOG_BUFFER...
-        int ret = vsnprintf(&print_buffer[buffer_idx], BUFFER_SIZE, format, args);
+        int ret = vsnprintf(&print_buffer[buffer_idx], BUFFER_SIZE - buffer_idx, format, args);
         buffer_idx += ret;
         return ret;
     }