crypto/rand/drbg_ctr.c:75: error: INTEGER_OVERFLOW_L2
  (0 - [-oo, 32]):unsigned64 by call to `EVP_CipherUpdate`.
Showing all 9 steps of the trace


crypto/rand/drbg_ctr.c:75:10: Call
73.           out[i] ^= in[i];
74.   
75.       if (!EVP_CipherUpdate(ctr->ctx_df, out, &outlen, out, AES_BLOCK_SIZE)
               ^
76.           || outlen != AES_BLOCK_SIZE)
77.           return 0;

crypto/evp/evp_enc.c:392:1: Parameter `ctx->cipher->block_size`
  390.   }
  391.   
  392. > int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
  393.                        const unsigned char *in, int inl)
  394.   {

crypto/evp/evp_enc.c:398:16: Call
  396.           return EVP_EncryptUpdate(ctx, out, outl, in, inl);
  397.       else
  398.           return EVP_DecryptUpdate(ctx, out, outl, in, inl);
                        ^
  399.   }
  400.   

crypto/evp/evp_enc.c:680:1: Parameter `ctx->cipher->block_size`
    678.   }
    679.   
    680. > int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
    681.                         const unsigned char *in, int inl)
    682.   {

crypto/evp/evp_enc.c:720:5: Assignment
    718.    legacy:
    719.   
    720.       b = ctx->cipher->block_size;
               ^
    721.   
    722.       if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))

crypto/evp/evp_enc.c:753:16: Call
    751.           /* see comment about PTRDIFF_T comparison above */
    752.           if (((PTRDIFF_T)out == (PTRDIFF_T)in)
    753.               || is_partially_overlapping(out, in, b)) {
                          ^
    754.               EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);
    755.               return 0;

crypto/evp/evp_enc.c:466:1: <RHS trace>
464.   #endif
465.   
466. > int is_partially_overlapping(const void *ptr1, const void *ptr2, int len)
467.   {
468.       PTRDIFF_T diff = (PTRDIFF_T)ptr1-(PTRDIFF_T)ptr2;

crypto/evp/evp_enc.c:466:1: Parameter `len`
      464.   #endif
      465.   
      466. > int is_partially_overlapping(const void *ptr1, const void *ptr2, int len)
      467.   {
      468.       PTRDIFF_T diff = (PTRDIFF_T)ptr1-(PTRDIFF_T)ptr2;

crypto/evp/evp_enc.c:475:50: Binary operation: (0 - [-oo, 32]):unsigned64 by call to `EVP_CipherUpdate` 
      473.        */
      474.       int overlapped = (len > 0) & (diff != 0) & ((diff < (PTRDIFF_T)len) |
      475.                                                   (diff > (0 - (PTRDIFF_T)len)));
                                                              ^
      476.   
      477.       return overlapped;

int is_partially_overlapping(const void *ptr1, const void *ptr2, int len)
{
    PTRDIFF_T diff = (PTRDIFF_T)ptr1-(PTRDIFF_T)ptr2;
    int overlapped = (len > 0) & (diff != 0) & ((diff < (PTRDIFF_T)len) |
                                                (diff > (0 - (PTRDIFF_T)len)));
    return overlapped;
}
['static int ctr_BCC_block(RAND_DRBG_CTR *ctr, unsigned char *out,\n                                const unsigned char *in)\n{\n    int i, outlen = AES_BLOCK_SIZE;\n    for (i = 0; i < 16; i++)\n        out[i] ^= in[i];\n    if (!EVP_CipherUpdate(ctr->ctx_df, out, &outlen, out, AES_BLOCK_SIZE)\n        || outlen != AES_BLOCK_SIZE)\n        return 0;\n    return 1;\n}', 'int EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,\n                     const unsigned char *in, int inl)\n{\n    if (ctx->encrypt)\n        return EVP_EncryptUpdate(ctx, out, outl, in, inl);\n    else\n        return EVP_DecryptUpdate(ctx, out, outl, in, inl);\n}', 'int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,\n                      const unsigned char *in, int inl)\n{\n    int fix_len, cmpl = inl, ret;\n    unsigned int b;\n    size_t soutl;\n    int blocksize;\n    if (ctx->encrypt) {\n        EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_INVALID_OPERATION);\n        return 0;\n    }\n    if (ctx->cipher == NULL || ctx->cipher->prov == NULL)\n        goto legacy;\n    blocksize = EVP_CIPHER_CTX_block_size(ctx);\n    if (ctx->cipher->cupdate == NULL || blocksize < 1) {\n        EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_UPDATE_ERROR);\n        return 0;\n    }\n    ret = ctx->cipher->cupdate(ctx->provctx, out, &soutl,\n                               inl + (blocksize == 1 ? 0 : blocksize), in,\n                               (size_t)inl);\n    if (ret) {\n        if (soutl > INT_MAX) {\n            EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_UPDATE_ERROR);\n            return 0;\n        }\n        *outl = soutl;\n    }\n    return ret;\n legacy:\n    b = ctx->cipher->block_size;\n    if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS))\n        cmpl = (cmpl + 7) / 8;\n    if (inl <= 0) {\n        *outl = 0;\n        return inl == 0;\n    }\n    if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER) {\n        if (b == 1 && is_partially_overlapping(out, in, cmpl)) {\n            EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);\n            return 0;\n        }\n        fix_len = ctx->cipher->do_cipher(ctx, out, in, inl);\n        if (fix_len < 0) {\n            *outl = 0;\n            return 0;\n        } else\n            *outl = fix_len;\n        return 1;\n    }\n    if (ctx->flags & EVP_CIPH_NO_PADDING)\n        return evp_EncryptDecryptUpdate(ctx, out, outl, in, inl);\n    OPENSSL_assert(b <= sizeof(ctx->final));\n    if (ctx->final_used) {\n        if (((PTRDIFF_T)out == (PTRDIFF_T)in)\n            || is_partially_overlapping(out, in, b)) {\n            EVPerr(EVP_F_EVP_DECRYPTUPDATE, EVP_R_PARTIALLY_OVERLAPPING);\n            return 0;\n        }\n        memcpy(out, ctx->final, b);\n        out += b;\n        fix_len = 1;\n    } else\n        fix_len = 0;\n    if (!evp_EncryptDecryptUpdate(ctx, out, outl, in, inl))\n        return 0;\n    if (b > 1 && !ctx->buf_len) {\n        *outl -= b;\n        ctx->final_used = 1;\n        memcpy(ctx->final, &out[*outl], b);\n    } else\n        ctx->final_used = 0;\n    if (fix_len)\n        *outl += b;\n    return 1;\n}', 'int is_partially_overlapping(const void *ptr1, const void *ptr2, int len)\n{\n    PTRDIFF_T diff = (PTRDIFF_T)ptr1-(PTRDIFF_T)ptr2;\n    int overlapped = (len > 0) & (diff != 0) & ((diff < (PTRDIFF_T)len) |\n                                                (diff > (0 - (PTRDIFF_T)len)));\n    return overlapped;\n}']