openssl: Fix multiple vulnerabilities

This is a rollup commit from upstream to fix:
  Heap out-of-bounds write in BIO_f_linebuffer on short writes (CVE-2025-68160)
  Unauthenticated/unencrypted trailing bytes with low-level OCB function calls (CVE-2025-69418)
  Out of bounds write in PKCS12_get_friendlyname() UTF-8 conversion (CVE-2025-69419)
  Missing ASN1_TYPE validation in TS_RESP_verify_response() function (CVE-2025-69420)
  NULL Pointer Dereference in PKCS12_item_decrypt_d2i_ex function (CVE-2025-69421)
  Missing ASN1_TYPE validation in PKCS#12 parsing (CVE-2026-22795)
  ASN1_TYPE Type Confusion in the PKCS7_digest_from_attributes() function (CVE-2026-22796)

See https://openssl-library.org/news/secadv/ for additional details.

Approved by:	so
Obtained from:	OpenSSL
Security:	FreeBSD-SA-26:01.openssl
Security:	CVE-2025-68160
Security:	CVE-2025-69418
Security:	CVE-2025-69419
Security:	CVE-2025-69420
Security:	CVE-2025-69421
Security:	CVE-2026-22795
Security:	CVE-2026-22796

crypto/openssl/apps/s_client.c

@@ -2698,8 +2698,9 @@ int s_client_main(int argc, char **argv)
                 goto end;
             }
             atyp = ASN1_generate_nconf(genstr, cnf);
-            if (atyp == NULL) {
+            if (atyp == NULL || atyp->type != V_ASN1_SEQUENCE) {
                 NCONF_free(cnf);
+                ASN1_TYPE_free(atyp);
                 BIO_printf(bio_err, "ASN1_generate_nconf failed\n");
                 goto end;
             }

crypto/openssl/crypto/asn1/a_strex.c

@@ -203,8 +203,10 @@ static int do_buf(unsigned char *buf, int buflen,
             orflags = CHARTYPE_LAST_ESC_2253;
         if (type & BUF_TYPE_CONVUTF8) {
             unsigned char utfbuf[6];
-            int utflen;
-            utflen = UTF8_putc(utfbuf, sizeof(utfbuf), c);
+            int utflen = UTF8_putc(utfbuf, sizeof(utfbuf), c);
+
+            if (utflen < 0)
+                return -1; /* error happened with UTF8 */
             for (i = 0; i < utflen; i++) {
                 /*
                  * We don't need to worry about setting orflags correctly

crypto/openssl/crypto/bio/bf_lbuf.c

@@ -191,14 +191,34 @@ static int linebuffer_write(BIO *b, const char *in, int inl)
     while (foundnl && inl > 0);
     /*
      * We've written as much as we can.  The rest of the input buffer, if
-     * any, is text that doesn't and with a NL and therefore needs to be
-     * saved for the next trip.
+     * any, is text that doesn't end with a NL and therefore we need to try
+     * free up some space in our obuf so we can make forward progress.
      */
-    if (inl > 0) {
-        memcpy(&(ctx->obuf[ctx->obuf_len]), in, inl);
-        ctx->obuf_len += inl;
-        num += inl;
+    while (inl > 0) {
+        size_t avail = (size_t)ctx->obuf_size - (size_t)ctx->obuf_len;
+        size_t to_copy;
+
+        if (avail == 0) {
+            /* Flush buffered data to make room */
+            i = BIO_write(b->next_bio, ctx->obuf, ctx->obuf_len);
+            if (i <= 0) {
+                BIO_copy_next_retry(b);
+                return num > 0 ? num : i;
+            }
+            if (i < ctx->obuf_len)
+                memmove(ctx->obuf, ctx->obuf + i, ctx->obuf_len - i);
+            ctx->obuf_len -= i;
+            continue;
+        }
+
+        to_copy = inl > (int)avail ? avail : (size_t)inl;
+        memcpy(&(ctx->obuf[ctx->obuf_len]), in, to_copy);
+        ctx->obuf_len += (int)to_copy;
+        in += to_copy;
+        inl -= (int)to_copy;
+        num += (int)to_copy;
     }
+
     return num;
 }
 

crypto/openssl/crypto/modes/ocb128.c

@@ -342,7 +342,7 @@ int CRYPTO_ocb128_encrypt(OCB128_CONTEXT *ctx,
 
     if (num_blocks && all_num_blocks == (size_t)all_num_blocks
         && ctx->stream != NULL) {
-        size_t max_idx = 0, top = (size_t)all_num_blocks;
+        size_t max_idx = 0, top = (size_t)all_num_blocks, processed_bytes = 0;
 
         /*
          * See how many L_{i} entries we need to process data at hand
@@ -356,6 +356,9 @@ int CRYPTO_ocb128_encrypt(OCB128_CONTEXT *ctx,
         ctx->stream(in, out, num_blocks, ctx->keyenc,
                     (size_t)ctx->sess.blocks_processed + 1, ctx->sess.offset.c,
                     (const unsigned char (*)[16])ctx->l, ctx->sess.checksum.c);
+        processed_bytes = num_blocks * 16;
+        in += processed_bytes;
+        out += processed_bytes;
     } else {
         /* Loop through all full blocks to be encrypted */
         for (i = ctx->sess.blocks_processed + 1; i <= all_num_blocks; i++) {
@@ -434,7 +437,7 @@ int CRYPTO_ocb128_decrypt(OCB128_CONTEXT *ctx,
 
     if (num_blocks && all_num_blocks == (size_t)all_num_blocks
         && ctx->stream != NULL) {
-        size_t max_idx = 0, top = (size_t)all_num_blocks;
+        size_t max_idx = 0, top = (size_t)all_num_blocks, processed_bytes = 0;
 
         /*
          * See how many L_{i} entries we need to process data at hand
@@ -448,6 +451,9 @@ int CRYPTO_ocb128_decrypt(OCB128_CONTEXT *ctx,
         ctx->stream(in, out, num_blocks, ctx->keydec,
                     (size_t)ctx->sess.blocks_processed + 1, ctx->sess.offset.c,
                     (const unsigned char (*)[16])ctx->l, ctx->sess.checksum.c);
+        processed_bytes = num_blocks * 16;
+        in += processed_bytes;
+        out += processed_bytes;
     } else {
         OCB_BLOCK tmp;
 

crypto/openssl/crypto/pkcs12/p12_decr.c

@@ -88,6 +88,12 @@ void *PKCS12_item_decrypt_d2i(const X509_ALGOR *algor, const ASN1_ITEM *it,
     void *ret;
     int outlen;
 
+    if (oct == NULL) {
+        PKCS12err(PKCS12_F_PKCS12_ITEM_DECRYPT_D2I,
+                  PKCS12_R_INVALID_NULL_ARGUMENT);
+        return NULL;
+    }
+
     if (!PKCS12_pbe_crypt(algor, pass, passlen, oct->data, oct->length,
                           &out, &outlen, 0)) {
         PKCS12err(PKCS12_F_PKCS12_ITEM_DECRYPT_D2I,

crypto/openssl/crypto/pkcs12/p12_kiss.c

@@ -183,11 +183,17 @@ static int parse_bag(PKCS12_SAFEBAG *bag, const char *pass, int passlen,
     ASN1_BMPSTRING *fname = NULL;
     ASN1_OCTET_STRING *lkid = NULL;
 
-    if ((attrib = PKCS12_SAFEBAG_get0_attr(bag, NID_friendlyName)))
+    if ((attrib = PKCS12_SAFEBAG_get0_attr(bag, NID_friendlyName))) {
+        if (attrib->type != V_ASN1_BMPSTRING)
+            return 0;
         fname = attrib->value.bmpstring;
+    }
 
-    if ((attrib = PKCS12_SAFEBAG_get0_attr(bag, NID_localKeyID)))
+    if ((attrib = PKCS12_SAFEBAG_get0_attr(bag, NID_localKeyID))) {
+        if (attrib->type != V_ASN1_OCTET_STRING)
+            return 0;
         lkid = attrib->value.octet_string;
+    }
 
     switch (PKCS12_SAFEBAG_get_nid(bag)) {
     case NID_keyBag:

crypto/openssl/crypto/pkcs12/p12_utl.c

@@ -207,6 +207,11 @@ char *OPENSSL_uni2utf8(const unsigned char *uni, int unilen)
     /* re-run the loop emitting UTF-8 string */
     for (asclen = 0, i = 0; i < unilen; ) {
         j = bmp_to_utf8(asctmp+asclen, uni+i, unilen-i);
+        /* when UTF8_putc fails */
+        if (j < 0) {
+            OPENSSL_free(asctmp);
+            return NULL;
+        }
         if (j == 4) i += 4;
         else        i += 2;
         asclen += j;

crypto/openssl/crypto/pkcs7/pk7_doit.c

@@ -1092,6 +1092,8 @@ ASN1_OCTET_STRING *PKCS7_digest_from_attributes(STACK_OF(X509_ATTRIBUTE) *sk)
     ASN1_TYPE *astype;
     if ((astype = get_attribute(sk, NID_pkcs9_messageDigest)) == NULL)
         return NULL;
+    if (astype->type != V_ASN1_OCTET_STRING)
+        return NULL;
     return astype->value.octet_string;
 }
 

crypto/openssl/crypto/ts/ts_rsp_verify.c

@@ -262,7 +262,7 @@ static ESS_SIGNING_CERT *ess_get_signing_cert(PKCS7_SIGNER_INFO *si)
     ASN1_TYPE *attr;
     const unsigned char *p;
     attr = PKCS7_get_signed_attribute(si, NID_id_smime_aa_signingCertificate);
-    if (!attr)
+    if (attr == NULL || attr->type != V_ASN1_SEQUENCE)
         return NULL;
     p = attr->value.sequence->data;
     return d2i_ESS_SIGNING_CERT(NULL, &p, attr->value.sequence->length);
@@ -274,7 +274,7 @@ static ESS_SIGNING_CERT_V2 *ess_get_signing_cert_v2(PKCS7_SIGNER_INFO *si)
     const unsigned char *p;
 
     attr = PKCS7_get_signed_attribute(si, NID_id_smime_aa_signingCertificateV2);
-    if (attr == NULL)
+    if (attr == NULL || attr->type != V_ASN1_SEQUENCE)
         return NULL;
     p = attr->value.sequence->data;
     return d2i_ESS_SIGNING_CERT_V2(NULL, &p, attr->value.sequence->length);