Fenrir fixes

.github/workflows/test-build-riscv.yml

@@ -18,6 +18,8 @@ jobs:
 
   build:
     runs-on: ubuntu-24.04
+    container:
+      image: ghcr.io/wolfssl/wolfboot-ci-riscv:v1.0
     timeout-minutes: 30
     steps:
       - uses: actions/checkout@v4
@@ -31,69 +33,16 @@ jobs:
           path: freedom-e-sdk
           submodules: recursive
 
-      - name: Workaround for sources.list
+      - name: Trust workspace
         run: |
-            # Replace sources
+          git config --global --add safe.directory "$GITHUB_WORKSPACE"
 
-            set -euxo pipefail
-
-            # Peek (what repos are active now)
-            apt-cache policy
-            grep -RInE '^(deb|Types|URIs)' /etc/apt || true
-
-            # Enable nullglob so *.list/*.sources that don't exist don't break sed
-            shopt -s nullglob
-
-            echo "Replace sources.list (legacy)"
-            sudo sed -i \
-              -e "s|https\?://azure\.archive\.ubuntu\.com/ubuntu/?|http://mirror.arizona.edu/ubuntu/|g" \
-              /etc/apt/sources.list || true
-
-            echo "Replace sources.list.d/*.list (legacy)"
-            for f in /etc/apt/sources.list.d/*.list; do
-              sudo sed -i \
-                -e "s|https\?://azure\.archive\.ubuntu\.com/ubuntu/?|http://mirror.arizona.edu/ubuntu/|g" \
-                "$f"
-            done
-
-            echo "Replace sources.list.d/*.sources (deb822)"
-            for f in /etc/apt/sources.list.d/*.sources; do
-              sudo sed -i \
-                -e "s|https\?://azure\.archive\.ubuntu\.com/ubuntu/?|http://mirror.arizona.edu/ubuntu/|g" \
-                -e "s|https\?://azure\.archive\.ubuntu\.com|http://mirror.arizona.edu|g" \
-                "$f"
-            done
-
-            echo "Fix /etc/apt/apt-mirrors.txt (used by URIs: mirror+file:...)"
-            if grep -qE '^[[:space:]]*https?://azure\.archive\.ubuntu\.com/ubuntu/?' /etc/apt/apt-mirrors.txt; then
-              # Replace azure with our mirror (idempotent)
-              sudo sed -i 's|https\?://azure\.archive\.ubuntu\.com/ubuntu/|http://mirror.arizona.edu/ubuntu/|g' /etc/apt/apt-mirrors.txt
-            fi
-
-            # Peek (verify changes)
-            grep -RIn "azure.archive.ubuntu.com" /etc/apt || true
-            grep -RInE '^(deb|Types|URIs)' /etc/apt || true
-            echo "--- apt-mirrors.txt ---"
-            cat /etc/apt/apt-mirrors.txt || true
-
-      - name: Update repository
-        run: sudo apt-get update -o Acquire::Retries=3
+      - name: Add preinstalled RISC-V toolchain to PATH
+        run: |
+          echo "/opt/xpack-riscv-none-elf-gcc-15.2.0-1/bin" >> "$GITHUB_PATH"
 
-      # ============================================================
-      # xPack RISC-V GCC — single toolchain with full multilib
-      # supporting both rv32 and rv64 targets (including rv32imac/ilp32
-      # and rv64imac/lp64 which riscv-collab nightly builds lack).
-      # https://github.com/xpack-dev-tools/riscv-none-elf-gcc-xpack
-      # ============================================================
-      - name: Download and install xPack RISC-V toolchain
+      - name: Check RISC-V toolchain
         run: |
-          XPACK_VER="15.2.0-1"
-          XPACK_FILE="xpack-riscv-none-elf-gcc-${XPACK_VER}-linux-x64.tar.gz"
-          wget -q "https://github.com/xpack-dev-tools/riscv-none-elf-gcc-xpack/releases/download/v${XPACK_VER}/${XPACK_FILE}"
-          echo "aaaa8060c914851a3e5ee1ba82cc3d6f80972f90638a05c6e823a37557a33758  ${XPACK_FILE}" | sha256sum -c -
-          tar -xf "${XPACK_FILE}"
-          echo "$GITHUB_WORKSPACE/xpack-riscv-none-elf-gcc-${XPACK_VER}/bin" >> $GITHUB_PATH
-          export PATH="$GITHUB_WORKSPACE/xpack-riscv-none-elf-gcc-${XPACK_VER}/bin:$PATH"
           riscv-none-elf-gcc --version
           riscv-none-elf-gcc -print-multi-lib | head -5
 

hal/library.c

@@ -191,13 +191,16 @@ int main(int argc, const char* argv[])
         if (((void*)gImage) == NULL) {
             wolfBoot_printf("failed to malloc %zu bytes for image\n", sz);
             ret = -1;
+            goto close_img;
         }
 
         bread = fread((void*)gImage, 1, sz, img);
         if (bread != sz) {
             ret = -2;
             wolfBoot_printf("read %zu of %zu bytes from %s\n", bread, sz, argv[1]);
         }
+
+close_img:
         fclose(img);
     } else {
         wolfBoot_printf("usage: %s image_file.bin\n", argv[0]);

include/gpt.h

@@ -99,6 +99,13 @@ struct gpt_part_info {
     uint16_t name[GPT_PART_NAME_SIZE];
 };
 
+/**
+ * @brief CRC32 context for GPT header and partition-array validation.
+ */
+struct gpt_crc32_ctx {
+    uint32_t value;
+};
+
 /**
  * @brief Check MBR for protective GPT partition entry.
  *
@@ -139,6 +146,32 @@ int gpt_parse_header(const uint8_t *sector, struct guid_ptable *hdr);
 int gpt_parse_partition(const uint8_t *entry_data, uint32_t entry_size,
                         struct gpt_part_info *part);
 
+/**
+ * @brief Initialize a GPT CRC32 calculation.
+ *
+ * @param[out] ctx Pointer to CRC32 context.
+ */
+void gpt_crc32_init(struct gpt_crc32_ctx *ctx);
+
+/**
+ * @brief Accumulate bytes into a GPT CRC32 calculation.
+ *
+ * @param[in,out] ctx Pointer to CRC32 context.
+ * @param[in] data Pointer to input bytes.
+ * @param[in] len Number of bytes to process.
+ */
+void gpt_crc32_update(struct gpt_crc32_ctx *ctx, const uint8_t *data,
+                      uint32_t len);
+
+/**
+ * @brief Finalize a GPT CRC32 calculation.
+ *
+ * @param[in] ctx Pointer to CRC32 context.
+ *
+ * @return Final CRC32 value.
+ */
+uint32_t gpt_crc32_final(const struct gpt_crc32_ctx *ctx);
+
 /**
  * @brief Compare UTF-16 partition name with ASCII string.
  *
@@ -152,4 +185,3 @@ int gpt_parse_partition(const uint8_t *entry_data, uint32_t entry_size,
 int gpt_part_name_eq(const uint16_t *utf16_name, const char *ascii_label);
 
 #endif /* GPT_H */
-

src/arm_tee_psa_ipc.c

@@ -28,6 +28,7 @@
 #include <psa/crypto.h>
 #include <psa/error.h>
 
+#include <wolfssl/wolfcrypt/memory.h>
 #include <wolfssl/wolfcrypt/types.h>
 #include <wolfboot/arm_tee_api.h>
 #include <wolfboot/dice.h>
@@ -240,6 +241,7 @@ static struct wolfboot_ps_entry *wolfboot_ps_alloc(psa_storage_uid_t uid)
 {
     for (size_t i = 0; i < WOLFBOOT_PS_MAX_ENTRIES; i++) {
         if (!g_ps_entries[i].in_use) {
+            wc_ForceZero(g_ps_entries[i].data, sizeof(g_ps_entries[i].data));
             g_ps_entries[i].in_use = 1;
             g_ps_entries[i].uid = uid;
             g_ps_entries[i].size = 0;
@@ -844,6 +846,7 @@ int32_t arm_tee_psa_call(psa_handle_t handle, int32_t type,
             if (entry == NULL) {
                 return PSA_ERROR_DOES_NOT_EXIST;
             }
+            wc_ForceZero(entry->data, sizeof(entry->data));
             entry->in_use = 0;
             entry->uid = 0;
             entry->size = 0;

src/delta.c

@@ -370,6 +370,7 @@ int wb_diff(WB_DIFF_CTX *ctx, uint8_t *patch, uint32_t len)
                     pb+= BLOCK_HDR_SIZE;
                     ctx->off_b += BLOCK_HDR_SIZE;
                     while ((pb < pb_limit) &&
+                            (match_len < UINT16_MAX) &&
                             (ctx->off_b < ctx->size_b) &&
                             (*pb == *(ctx->src_b + ctx->off_b))) {
                         /* Extend match as long as the areas have the

src/disk.c

@@ -118,7 +118,11 @@ int disk_open(int drv)
     uint32_t i;
     uint32_t n_parts = 0;
     uint32_t gpt_lba = 0;
+    uint32_t chunk = 0;
+    uint64_t array_addr = 0;
+    uint64_t bytes_left = 0;
     uint8_t sector[GPT_SECTOR_SIZE] XALIGNED(4);
+    struct gpt_crc32_ctx part_crc;
 
     if ((drv < 0) || (drv >= MAX_DISKS)) {
         wolfBoot_printf("Attempting to access invalid drive %d\r\n", drv);
@@ -162,6 +166,34 @@ int disk_open(int drv)
         wolfBoot_printf("Valid GPT partition table\r\n");
         wolfBoot_printf("Max number of partitions: %d\r\n", ptable.n_part);
 
+        array_addr = ptable.start_array * GPT_SECTOR_SIZE;
+        bytes_left = (uint64_t)ptable.n_part * ptable.array_sz;
+
+        gpt_crc32_init(&part_crc);
+        while (bytes_left > 0) {
+            chunk = GPT_SECTOR_SIZE;
+
+            if (bytes_left < chunk) {
+                chunk = (uint32_t)bytes_left;
+            }
+
+            r = disk_read(drv, array_addr, chunk, sector);
+            if (r < 0) {
+                Drives[drv].is_open = 0;
+                return -1;
+            }
+
+            gpt_crc32_update(&part_crc, sector, chunk);
+            array_addr += chunk;
+            bytes_left -= chunk;
+        }
+
+        if (gpt_crc32_final(&part_crc) != ptable.part_crc) {
+            wolfBoot_printf("Invalid GPT partition entry array CRC\r\n");
+            Drives[drv].is_open = 0;
+            return -1;
+        }
+
         n_parts = ptable.n_part;
         if (n_parts > MAX_PARTITIONS)
             n_parts = MAX_PARTITIONS;

src/gpt.c

@@ -34,21 +34,39 @@
 
 #include "gpt.h"
 
-static uint32_t gpt_crc32(const uint8_t *data, uint32_t len)
+void gpt_crc32_init(struct gpt_crc32_ctx *ctx)
+{
+    if (ctx != NULL) {
+        ctx->value = 0xFFFFFFFFU;
+    }
+}
+
+void gpt_crc32_update(struct gpt_crc32_ctx *ctx, const uint8_t *data,
+                      uint32_t len)
 {
-    uint32_t crc = 0xFFFFFFFFU;
     uint32_t i;
     uint32_t j;
 
+    if (ctx == NULL || data == NULL) {
+        return;
+    }
+
     for (i = 0; i < len; i++) {
-        crc ^= data[i];
+        ctx->value ^= data[i];
         for (j = 0; j < 8; j++) {
-            uint32_t mask = -(crc & 1U);
-            crc = (crc >> 1) ^ (0xEDB88320U & mask);
+            uint32_t mask = -(ctx->value & 1U);
+            ctx->value = (ctx->value >> 1) ^ (0xEDB88320U & mask);
         }
     }
+}
+
+uint32_t gpt_crc32_final(const struct gpt_crc32_ctx *ctx)
+{
+    if (ctx == NULL) {
+        return 0;
+    }
 
-    return ~crc;
+    return ~ctx->value;
 }
 
 /**
@@ -116,6 +134,7 @@ int gpt_parse_header(const uint8_t *sector, struct guid_ptable *hdr)
 {
     const struct guid_ptable *src;
     struct guid_ptable tmp;
+    struct gpt_crc32_ctx crc;
 
     if (sector == NULL || hdr == NULL) {
         return -1;
@@ -134,7 +153,9 @@ int gpt_parse_header(const uint8_t *sector, struct guid_ptable *hdr)
 
     memcpy(&tmp, src, sizeof(tmp));
     tmp.hdr_crc32 = 0;
-    if (gpt_crc32((const uint8_t *)&tmp, src->hdr_size) != src->hdr_crc32) {
+    gpt_crc32_init(&crc);
+    gpt_crc32_update(&crc, (const uint8_t *)&tmp, src->hdr_size);
+    if (gpt_crc32_final(&crc) != src->hdr_crc32) {
         return -1;
     }
 

src/libwolfboot.c

@@ -65,11 +65,12 @@
 #ifdef EXT_ENCRYPTED
 static int encrypt_key_is_erased(const uint8_t *key, uint32_t len)
 {
+    const volatile uint8_t *vkey = key;
     uint8_t diff = 0;
     uint32_t i;
 
     for (i = 0; i < len; i++)
-        diff |= key[i] ^ FLASH_BYTE_ERASED;
+        diff |= vkey[i] ^ FLASH_BYTE_ERASED;
 
     return diff == 0;
 }
@@ -85,13 +86,14 @@ static int fallback_iv_forced = 0;
 
 static int encrypt_key_is_valid(const uint8_t *key, uint32_t len)
 {
+    const volatile uint8_t *vkey = key;
     uint8_t has_one = 0;
     uint8_t has_zero = 0;
     uint32_t i;
 
     for (i = 0; i < len; i++) {
-        has_one |= key[i];
-        has_zero |= (uint8_t)~key[i];
+        has_one |= vkey[i];
+        has_zero |= (uint8_t)~vkey[i];
     }
 
     return (has_one != 0) && (has_zero != 0);

src/multiboot.c

@@ -351,8 +351,10 @@ static void mb2_dump_header(void* mbHeader) {
     MB2_DEBUG_PRINTF("Checksum: 0x%x\r\n", header->checksum);
 
     tags = (uint8_t*)header + sizeof(*header);
-    if (header->header_length < sizeof(struct mb2_header))
+    if (header->header_length < sizeof(struct mb2_header)) {
         MB2_DEBUG_PRINTF("Invalid header length\r\n");
+        return;
+    }
     mb2_dump_tags(tags, header->header_length - sizeof(*header));
 }
 #endif /* DEBUG_MB2 */