crypto/rsa/rsa_crpt.c:98: error: BUFFER_OVERRUN_L3
  Offset: [3, +oo] (⇐ [0, +oo] + 3) Size: [0, 8388607] by call to `BN_sub`.
Showing all 18 steps of the trace


crypto/rsa/rsa_crpt.c:92:10: Call
90.   
91.       BN_CTX_start(ctx);
92.       r0 = BN_CTX_get(ctx);
               ^
93.       r1 = BN_CTX_get(ctx);
94.       r2 = BN_CTX_get(ctx);

crypto/bn/bn_ctx.c:229:5: Call
  227.       }
  228.       /* OK, make sure the returned bignum is "zero" */
  229.       BN_zero(ret);
             ^
  230.       ctx->used++;
  231.       CTXDBG_RET(ctx, ret);

crypto/bn/bn_lib.c:463:1: Parameter `*a->d`
    461.   }
    462.   
    463. > int BN_set_word(BIGNUM *a, BN_ULONG w)
    464.   {
    465.       bn_check_top(a);

crypto/bn/bn_lib.c:466:9: Call
    464.   {
    465.       bn_check_top(a);
    466.       if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)
                   ^
    467.           return (0);
    468.       a->neg = 0;

crypto/bn/bn_lcl.h:676:1: Parameter `*a->d`
      674.   int bn_probable_prime_dh_coprime(BIGNUM *rnd, int bits, BN_CTX *ctx);
      675.   
      676. > static ossl_inline BIGNUM *bn_expand(BIGNUM *a, int bits)
      677.   {
      678.       if (bits > (INT_MAX - BN_BITS2 + 1))

crypto/rsa/rsa_crpt.c:98:10: Call
96.           goto err;
97.   
98.       if (!BN_sub(r1, p, BN_value_one()))
                ^
99.           goto err;
100.       if (!BN_sub(r2, q, BN_value_one()))

crypto/bn/bn_add.c:185:1: Parameter `*r->d`
  183.   }
  184.   
  185. > int BN_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b)
  186.   {
  187.       int max;

crypto/bn/bn_add.c:217:14: Call
  215.   
  216.       if (add) {
  217.           if (!BN_uadd(r, a, b))
                      ^
  218.               return (0);
  219.           r->neg = neg;

crypto/bn/bn_add.c:57:1: Parameter `*r->d`
    55.   
    56.   /* unsigned add of b to a */
    57. > int BN_uadd(BIGNUM *r, const BIGNUM *a, const BIGNUM *b)
    58.   {
    59.       int max, min, dif;

crypto/bn/bn_add.c:76:9: Call
    74.       dif = max - min;
    75.   
    76.       if (bn_wexpand(r, max + 1) == NULL)
                  ^
    77.           return 0;
    78.   

crypto/bn/bn_lib.c:1014:1: Parameter `*a->d`
      1012.   }
      1013.   
      1014. > BIGNUM *bn_wexpand(BIGNUM *a, int words)
      1015.   {
      1016.       return (words <= a->dmax) ? a : bn_expand2(a, words);

crypto/bn/bn_lib.c:1016:37: Call
      1014.   BIGNUM *bn_wexpand(BIGNUM *a, int words)
      1015.   {
      1016.       return (words <= a->dmax) ? a : bn_expand2(a, words);
                                                  ^
      1017.   }
      1018.   

crypto/bn/bn_lib.c:323:1: Parameter `*b->d`
        321.    */
        322.   
        323. > BIGNUM *bn_expand2(BIGNUM *b, int words)
        324.   {
        325.       bn_check_top(b);

crypto/bn/bn_lib.c:328:23: Call
        326.   
        327.       if (words > b->dmax) {
        328.           BN_ULONG *a = bn_expand_internal(b, words);
                                     ^
        329.           if (!a)
        330.               return NULL;

crypto/bn/bn_lib.c:246:1: <Length trace>
244.   /* This is used by bn_expand2() */
245.   /* The caller MUST check that words > b->dmax before calling this */
246. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
247.   {
248.       BN_ULONG *A, *a = NULL;

crypto/bn/bn_lib.c:246:1: Parameter `*b->d`
          244.   /* This is used by bn_expand2() */
          245.   /* The caller MUST check that words > b->dmax before calling this */
          246. > static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
          247.   {
          248.       BN_ULONG *A, *a = NULL;

crypto/bn/bn_lib.c:272:5: Assignment
          270.   
          271.   #if 1
          272.       B = b->d;
                     ^
          273.       /* Check if the previous number needs to be copied */
          274.       if (B != NULL) {

crypto/bn/bn_lib.c:289:18: Array access: Offset: [3, +oo] (⇐ [0, +oo] + 3) Size: [0, 8388607] by call to `BN_sub` 
          287.               a1 = B[1];
          288.               a2 = B[2];
          289.               a3 = B[3];
                                  ^
          290.               A[0] = a0;
          291.               A[1] = a1;

static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)
{
    BN_ULONG *A, *a = NULL;
    const BN_ULONG *B;
    int i;
    bn_check_top(b);
    if (words > (INT_MAX / (4 * BN_BITS2))) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_BIGNUM_TOO_LONG);
        return NULL;
    }
    if (BN_get_flags(b, BN_FLG_STATIC_DATA)) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_EXPAND_ON_STATIC_BIGNUM_DATA);
        return (NULL);
    }
    if (BN_get_flags(b,BN_FLG_SECURE))
        a = A = OPENSSL_secure_zalloc(words * sizeof(*a));
    else
        a = A = OPENSSL_zalloc(words * sizeof(*a));
    if (A == NULL) {
        BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);
        return (NULL);
    }
#if 1
    B = b->d;
    if (B != NULL) {
        for (i = b->top >> 2; i > 0; i--, A += 4, B += 4) {
            BN_ULONG a0, a1, a2, a3;
            a0 = B[0];
            a1 = B[1];
            a2 = B[2];
            a3 = B[3];
            A[0] = a0;
            A[1] = a1;
            A[2] = a2;
            A[3] = a3;
        }
        switch (b->top & 3) {
        case 3:
            A[2] = B[2];
        case 2:
            A[1] = B[1];
        case 1:
            A[0] = B[0];
        case 0:
            ;
        }
    }
#else
    memset(A, 0, sizeof(*A) * words);
    memcpy(A, b->d, sizeof(b->d[0]) * b->top);
#endif
    return (a);
}
['static BIGNUM *rsa_get_public_exp(const BIGNUM *d, const BIGNUM *p,\n                                  const BIGNUM *q, BN_CTX *ctx)\n{\n    BIGNUM *ret = NULL, *r0, *r1, *r2;\n    if (d == NULL || p == NULL || q == NULL)\n        return NULL;\n    BN_CTX_start(ctx);\n    r0 = BN_CTX_get(ctx);\n    r1 = BN_CTX_get(ctx);\n    r2 = BN_CTX_get(ctx);\n    if (r2 == NULL)\n        goto err;\n    if (!BN_sub(r1, p, BN_value_one()))\n        goto err;\n    if (!BN_sub(r2, q, BN_value_one()))\n        goto err;\n    if (!BN_mul(r0, r1, r2, ctx))\n        goto err;\n    ret = BN_mod_inverse(NULL, d, r0, ctx);\n err:\n    BN_CTX_end(ctx);\n    return ret;\n}', 'BIGNUM *BN_CTX_get(BN_CTX *ctx)\n{\n    BIGNUM *ret;\n    CTXDBG_ENTRY("BN_CTX_get", ctx);\n    if (ctx->err_stack || ctx->too_many)\n        return NULL;\n    if ((ret = BN_POOL_get(&ctx->pool, ctx->flags)) == NULL) {\n        ctx->too_many = 1;\n        BNerr(BN_F_BN_CTX_GET, BN_R_TOO_MANY_TEMPORARY_VARIABLES);\n        return NULL;\n    }\n    BN_zero(ret);\n    ctx->used++;\n    CTXDBG_RET(ctx, ret);\n    return ret;\n}', 'int BN_set_word(BIGNUM *a, BN_ULONG w)\n{\n    bn_check_top(a);\n    if (bn_expand(a, (int)sizeof(BN_ULONG) * 8) == NULL)\n        return (0);\n    a->neg = 0;\n    a->d[0] = w;\n    a->top = (w ? 1 : 0);\n    bn_check_top(a);\n    return (1);\n}', 'static ossl_inline BIGNUM *bn_expand(BIGNUM *a, int bits)\n{\n    if (bits > (INT_MAX - BN_BITS2 + 1))\n        return NULL;\n    if(((bits+BN_BITS2-1)/BN_BITS2) <= (a)->dmax)\n        return a;\n    return bn_expand2((a),(bits+BN_BITS2-1)/BN_BITS2);\n}', 'int BN_sub(BIGNUM *r, const BIGNUM *a, const BIGNUM *b)\n{\n    int max;\n    int add = 0, neg = 0;\n    const BIGNUM *tmp;\n    bn_check_top(a);\n    bn_check_top(b);\n    if (a->neg) {\n        if (b->neg) {\n            tmp = a;\n            a = b;\n            b = tmp;\n        } else {\n            add = 1;\n            neg = 1;\n        }\n    } else {\n        if (b->neg) {\n            add = 1;\n            neg = 0;\n        }\n    }\n    if (add) {\n        if (!BN_uadd(r, a, b))\n            return (0);\n        r->neg = neg;\n        return (1);\n    }\n    max = (a->top > b->top) ? a->top : b->top;\n    if (bn_wexpand(r, max) == NULL)\n        return (0);\n    if (BN_ucmp(a, b) < 0) {\n        if (!BN_usub(r, b, a))\n            return (0);\n        r->neg = 1;\n    } else {\n        if (!BN_usub(r, a, b))\n            return (0);\n        r->neg = 0;\n    }\n    bn_check_top(r);\n    return (1);\n}', 'int BN_uadd(BIGNUM *r, const BIGNUM *a, const BIGNUM *b)\n{\n    int max, min, dif;\n    const BN_ULONG *ap, *bp;\n    BN_ULONG *rp, carry, t1, t2;\n    const BIGNUM *tmp;\n    bn_check_top(a);\n    bn_check_top(b);\n    if (a->top < b->top) {\n        tmp = a;\n        a = b;\n        b = tmp;\n    }\n    max = a->top;\n    min = b->top;\n    dif = max - min;\n    if (bn_wexpand(r, max + 1) == NULL)\n        return 0;\n    r->top = max;\n    ap = a->d;\n    bp = b->d;\n    rp = r->d;\n    carry = bn_add_words(rp, ap, bp, min);\n    rp += min;\n    ap += min;\n    bp += min;\n    if (carry) {\n        while (dif) {\n            dif--;\n            t1 = *(ap++);\n            t2 = (t1 + 1) & BN_MASK2;\n            *(rp++) = t2;\n            if (t2) {\n                carry = 0;\n                break;\n            }\n        }\n        if (carry) {\n            *rp = 1;\n            r->top++;\n        }\n    }\n    if (dif && rp != ap)\n        while (dif--)\n            *(rp++) = *(ap++);\n    r->neg = 0;\n    bn_check_top(r);\n    return 1;\n}', 'BIGNUM *bn_wexpand(BIGNUM *a, int words)\n{\n    return (words <= a->dmax) ? a : bn_expand2(a, words);\n}', 'BIGNUM *bn_expand2(BIGNUM *b, int words)\n{\n    bn_check_top(b);\n    if (words > b->dmax) {\n        BN_ULONG *a = bn_expand_internal(b, words);\n        if (!a)\n            return NULL;\n        if (b->d) {\n            OPENSSL_cleanse(b->d, b->dmax * sizeof(b->d[0]));\n            bn_free_d(b);\n        }\n        b->d = a;\n        b->dmax = words;\n    }\n    bn_check_top(b);\n    return b;\n}', 'static BN_ULONG *bn_expand_internal(const BIGNUM *b, int words)\n{\n    BN_ULONG *A, *a = NULL;\n    const BN_ULONG *B;\n    int i;\n    bn_check_top(b);\n    if (words > (INT_MAX / (4 * BN_BITS2))) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_BIGNUM_TOO_LONG);\n        return NULL;\n    }\n    if (BN_get_flags(b, BN_FLG_STATIC_DATA)) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, BN_R_EXPAND_ON_STATIC_BIGNUM_DATA);\n        return (NULL);\n    }\n    if (BN_get_flags(b,BN_FLG_SECURE))\n        a = A = OPENSSL_secure_zalloc(words * sizeof(*a));\n    else\n        a = A = OPENSSL_zalloc(words * sizeof(*a));\n    if (A == NULL) {\n        BNerr(BN_F_BN_EXPAND_INTERNAL, ERR_R_MALLOC_FAILURE);\n        return (NULL);\n    }\n#if 1\n    B = b->d;\n    if (B != NULL) {\n        for (i = b->top >> 2; i > 0; i--, A += 4, B += 4) {\n            BN_ULONG a0, a1, a2, a3;\n            a0 = B[0];\n            a1 = B[1];\n            a2 = B[2];\n            a3 = B[3];\n            A[0] = a0;\n            A[1] = a1;\n            A[2] = a2;\n            A[3] = a3;\n        }\n        switch (b->top & 3) {\n        case 3:\n            A[2] = B[2];\n        case 2:\n            A[1] = B[1];\n        case 1:\n            A[0] = B[0];\n        case 0:\n            ;\n        }\n    }\n#else\n    memset(A, 0, sizeof(*A) * words);\n    memcpy(A, b->d, sizeof(b->d[0]) * b->top);\n#endif\n    return (a);\n}']