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lib/config: Validate hex characters in config checksum

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Mintsuki
2026-04-02 20:07:13 +02:00
parent b699192d0d
commit b4f336d098
1 changed files with 6 additions and 1 deletions
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7
common/lib/config.c
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@@ -361,7 +361,12 @@ int init_config(size_t config_size) {
uint8_t hash_buf[BLAKE2B_OUT_BYTES];
for (size_t i = 0; i < BLAKE2B_OUT_BYTES; i++) {
hash_buf[i] = digit_to_int(config_b2sum[i * 2]) << 4 | digit_to_int(config_b2sum[i * 2 + 1]);
int hi = digit_to_int(config_b2sum[i * 2]);
int lo = digit_to_int(config_b2sum[i * 2 + 1]);
if (hi == -1 || lo == -1) {
panic(false, "!!! INVALID CHARACTER IN CONFIG CHECKSUM !!!");
}
hash_buf[i] = hi << 4 | lo;
}
if (memcmp(hash_buf, out_buf, BLAKE2B_OUT_BYTES) != 0) {