diff --git a/SOURCES/nss-3.67-cve-2021-43527-test.patch b/SOURCES/nss-3.67-cve-2021-43527-test.patch
new file mode 100644
index 0000000..51cb8e0
--- /dev/null
+++ b/SOURCES/nss-3.67-cve-2021-43527-test.patch
@@ -0,0 +1,325 @@
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++++ b/tests/cert/Leaf-bogus-dsa.crt
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++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERERE
++RERERERERERERERERERERERERERERERERERERERERERERERERERERQIDAQABMC4G
++CSqGSIb3DQEBCjAhoRowGAYJKoZIhvcNAQEIMAsGCSqGSIb3DQEBCqIDAgEgA4IL
++CwAAxVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
++VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVU=
++-----END CERTIFICATE-----
+diff --git a/tests/cert/cert.sh b/tests/cert/cert.sh
+--- a/tests/cert/cert.sh
++++ b/tests/cert/cert.sh
+@@ -114,16 +114,28 @@ certu()
+         cert_log "ERROR: ${CU_ACTION} failed $RET"
+     else
+         html_passed "${CU_ACTION}"
+     fi
+ 
+     return $RET
+ }
+ 
++cert_test_vfy()
++{
++  echo "$SCRIPTNAME: Verify large rsa pss signature --------------"
++  echo " vfychain -a  Leaf-bogus-dsa.crt"
++  vfychain -a  ${QADIR}/cert/Leaf-bogus-dsa.crt
++  html_msg $? 1 "Verify large dsa signature"
++  echo "$SCRIPTNAME: Verify large rsa pss signature --------------"
++  echo " vfychain -a  Leaf-bogus-rsa-pss.crt"
++  vfychain -a  ${QADIR}/cert/Leaf-bogus-rsa-pss.crt
++  html_msg $? 1 "Verify large rsa pss signature"
++}
++
+ ################################ crlu #################################
+ # local shell function to call crlutil, also: writes action and options to
+ # stdout, sets variable RET and writes results to the html file results
+ ########################################################################
+ crlu()
+ {
+     echo "$SCRIPTNAME: ${CU_ACTION} --------------------------"
+     
+@@ -2640,11 +2652,13 @@ if [ -z "$NSS_TEST_DISABLE_CRL" ] ; then
+ else
+     echo "$SCRIPTNAME: Skipping CRL Tests"
+ fi
+ 
+ if [ -n "$DO_DIST_ST" -a "$DO_DIST_ST" = "TRUE" ] ; then
+     cert_stresscerts
+ fi
+ 
++cert_test_vfy
++
+ cert_iopr_setup
+ 
+ cert_cleanup
diff --git a/SOURCES/nss-3.67-cve-2021-43527.patch b/SOURCES/nss-3.67-cve-2021-43527.patch
new file mode 100644
index 0000000..8fc81d3
--- /dev/null
+++ b/SOURCES/nss-3.67-cve-2021-43527.patch
@@ -0,0 +1,279 @@
+diff --git a/lib/cryptohi/secvfy.c b/lib/cryptohi/secvfy.c
+--- a/lib/cryptohi/secvfy.c
++++ b/lib/cryptohi/secvfy.c
+@@ -164,6 +164,37 @@
+         PR_FALSE /*XXX: unsafeAllowMissingParameters*/);
+ }
+ 
++static unsigned int
++checkedSignatureLen(const SECKEYPublicKey *pubk)
++{
++    unsigned int sigLen = SECKEY_SignatureLen(pubk);
++    if (sigLen == 0) {
++        /* Error set by SECKEY_SignatureLen */
++        return sigLen;
++    }
++    unsigned int maxSigLen;
++    switch (pubk->keyType) {
++        case rsaKey:
++        case rsaPssKey:
++            maxSigLen = (RSA_MAX_MODULUS_BITS + 7) / 8;
++            break;
++        case dsaKey:
++            maxSigLen = DSA_MAX_SIGNATURE_LEN;
++            break;
++        case ecKey:
++            maxSigLen = 2 * MAX_ECKEY_LEN;
++            break;
++        default:
++            PORT_SetError(SEC_ERROR_UNSUPPORTED_KEYALG);
++            return 0;
++    }
++    if (sigLen > maxSigLen) {
++        PORT_SetError(SEC_ERROR_INVALID_KEY);
++        return 0;
++    }
++    return sigLen;
++}
++
+ /*
+  * decode the ECDSA or DSA signature from it's DER wrapping.
+  * The unwrapped/raw signature is placed in the buffer pointed
+@@ -174,38 +205,38 @@
+                        unsigned int len)
+ {
+     SECItem *dsasig = NULL; /* also used for ECDSA */
+-    SECStatus rv = SECSuccess;
+ 
+-    if ((algid != SEC_OID_ANSIX9_DSA_SIGNATURE) &&
+-        (algid != SEC_OID_ANSIX962_EC_PUBLIC_KEY)) {
+-        if (sig->len != len) {
+-            PORT_SetError(SEC_ERROR_BAD_DER);
+-            return SECFailure;
++    /* Safety: Ensure algId is as expected and that signature size is within maxmimums */
++    if (algid == SEC_OID_ANSIX9_DSA_SIGNATURE) {
++        if (len > DSA_MAX_SIGNATURE_LEN) {
++            goto loser;
+         }
+-
+-        PORT_Memcpy(dsig, sig->data, sig->len);
+-        return SECSuccess;
++    } else if (algid == SEC_OID_ANSIX962_EC_PUBLIC_KEY) {
++        if (len > MAX_ECKEY_LEN * 2) {
++            goto loser;
++        }
++    } else {
++        goto loser;
+     }
+ 
+-    if (algid == SEC_OID_ANSIX962_EC_PUBLIC_KEY) {
+-        if (len > MAX_ECKEY_LEN * 2) {
+-            PORT_SetError(SEC_ERROR_BAD_DER);
+-            return SECFailure;
+-        }
++    /* Decode and pad to length */
++    dsasig = DSAU_DecodeDerSigToLen((SECItem *)sig, len);
++    if (dsasig == NULL) {
++        goto loser;
+     }
+-    dsasig = DSAU_DecodeDerSigToLen((SECItem *)sig, len);
+-
+-    if ((dsasig == NULL) || (dsasig->len != len)) {
+-        rv = SECFailure;
+-    } else {
+-        PORT_Memcpy(dsig, dsasig->data, dsasig->len);
++    if (dsasig->len != len) {
++        SECITEM_FreeItem(dsasig, PR_TRUE);
++        goto loser;
+     }
+ 
+-    if (dsasig != NULL)
+-        SECITEM_FreeItem(dsasig, PR_TRUE);
+-    if (rv == SECFailure)
+-        PORT_SetError(SEC_ERROR_BAD_DER);
+-    return rv;
++    PORT_Memcpy(dsig, dsasig->data, len);
++    SECITEM_FreeItem(dsasig, PR_TRUE);
++
++    return SECSuccess;
++
++loser:
++    PORT_SetError(SEC_ERROR_BAD_DER);
++    return SECFailure;
+ }
+ 
+ const SEC_ASN1Template hashParameterTemplate[] =
+@@ -281,7 +312,7 @@
+ sec_DecodeSigAlg(const SECKEYPublicKey *key, SECOidTag sigAlg,
+                  const SECItem *param, SECOidTag *encalgp, SECOidTag *hashalg)
+ {
+-    int len;
++    unsigned int len;
+     PLArenaPool *arena;
+     SECStatus rv;
+     SECItem oid;
+@@ -466,48 +497,52 @@
+     cx->pkcs1RSADigestInfo = NULL;
+     rv = SECSuccess;
+     if (sig) {
+-        switch (type) {
+-            case rsaKey:
+-                rv = recoverPKCS1DigestInfo(hashAlg, &cx->hashAlg,
+-                                            &cx->pkcs1RSADigestInfo,
+-                                            &cx->pkcs1RSADigestInfoLen,
+-                                            cx->key,
+-                                            sig, wincx);
+-                break;
+-            case rsaPssKey:
+-                sigLen = SECKEY_SignatureLen(key);
+-                if (sigLen == 0) {
+-                    /* error set by SECKEY_SignatureLen */
+-                    rv = SECFailure;
++        rv = SECFailure;
++        if (type == rsaKey) {
++            rv = recoverPKCS1DigestInfo(hashAlg, &cx->hashAlg,
++                                        &cx->pkcs1RSADigestInfo,
++                                        &cx->pkcs1RSADigestInfoLen,
++                                        cx->key,
++                                        sig, wincx);
++        } else {
++            sigLen = checkedSignatureLen(key);
++            /* Check signature length is within limits */
++            if (sigLen == 0) {
++                /* error set by checkedSignatureLen */
++                rv = SECFailure;
++                goto loser;
++            }
++            if (sigLen > sizeof(cx->u)) {
++                PORT_SetError(SEC_ERROR_BAD_SIGNATURE);
++                rv = SECFailure;
++                goto loser;
++            }
++            switch (type) {
++                case rsaPssKey:
++                    if (sig->len != sigLen) {
++                        PORT_SetError(SEC_ERROR_BAD_SIGNATURE);
++                        rv = SECFailure;
++                        goto loser;
++                    }
++                    PORT_Memcpy(cx->u.buffer, sig->data, sigLen);
++                    rv = SECSuccess;
+                     break;
+-                }
+-                if (sig->len != sigLen) {
+-                    PORT_SetError(SEC_ERROR_BAD_SIGNATURE);
++                case ecKey:
++                case dsaKey:
++                    /* decodeECorDSASignature will check sigLen == sig->len after padding */
++                    rv = decodeECorDSASignature(encAlg, sig, cx->u.buffer, sigLen);
++                    break;
++                default:
++                    /* Unreachable */
+                     rv = SECFailure;
+-                    break;
+-                }
+-                PORT_Memcpy(cx->u.buffer, sig->data, sigLen);
+-                break;
+-            case dsaKey:
+-            case ecKey:
+-                sigLen = SECKEY_SignatureLen(key);
+-                if (sigLen == 0) {
+-                    /* error set by SECKEY_SignatureLen */
+-                    rv = SECFailure;
+-                    break;
+-                }
+-                rv = decodeECorDSASignature(encAlg, sig, cx->u.buffer, sigLen);
+-                break;
+-            default:
+-                rv = SECFailure;
+-                PORT_SetError(SEC_ERROR_UNSUPPORTED_KEYALG);
+-                break;
++                    goto loser;
++            }
++        }
++        if (rv != SECSuccess) {
++            goto loser;
+         }
+     }
+ 
+-    if (rv)
+-        goto loser;
+-
+     /* check hash alg again, RSA may have changed it.*/
+     if (HASH_GetHashTypeByOidTag(cx->hashAlg) == HASH_AlgNULL) {
+         /* error set by HASH_GetHashTypeByOidTag */
+@@ -650,11 +685,16 @@
+     switch (cx->key->keyType) {
+         case ecKey:
+         case dsaKey:
+-            dsasig.data = cx->u.buffer;
+-            dsasig.len = SECKEY_SignatureLen(cx->key);
++            dsasig.len = checkedSignatureLen(cx->key);
+             if (dsasig.len == 0) {
+                 return SECFailure;
+             }
++            if (dsasig.len > sizeof(cx->u)) {
++                PORT_SetError(SEC_ERROR_BAD_SIGNATURE);
++                return SECFailure;
++            }
++            dsasig.data = cx->u.buffer;
++
+             if (sig) {
+                 rv = decodeECorDSASignature(cx->encAlg, sig, dsasig.data,
+                                             dsasig.len);
+@@ -686,8 +726,13 @@
+                 }
+ 
+                 rsasig.data = cx->u.buffer;
+-                rsasig.len = SECKEY_SignatureLen(cx->key);
++                rsasig.len = checkedSignatureLen(cx->key);
+                 if (rsasig.len == 0) {
++                    /* Error set by checkedSignatureLen */
++                    return SECFailure;
++                }
++                if (rsasig.len > sizeof(cx->u)) {
++                    PORT_SetError(SEC_ERROR_BAD_SIGNATURE);
+                     return SECFailure;
+                 }
+                 if (sig) {
+@@ -749,7 +794,6 @@
+     SECStatus rv;
+     VFYContext *cx;
+     SECItem dsasig; /* also used for ECDSA */
+-
+     rv = SECFailure;
+ 
+     cx = vfy_CreateContext(key, sig, encAlg, hashAlg, NULL, wincx);
+@@ -757,19 +801,25 @@
+         switch (key->keyType) {
+             case rsaKey:
+                 rv = verifyPKCS1DigestInfo(cx, digest);
++                /* Error (if any) set by verifyPKCS1DigestInfo */
+                 break;
+-            case dsaKey:
+             case ecKey:
++            case dsaKey:
+                 dsasig.data = cx->u.buffer;
+-                dsasig.len = SECKEY_SignatureLen(cx->key);
++                dsasig.len = checkedSignatureLen(cx->key);
+                 if (dsasig.len == 0) {
++                    /* Error set by checkedSignatureLen */
++                    rv = SECFailure;
+                     break;
+                 }
+-                if (PK11_Verify(cx->key, &dsasig, (SECItem *)digest, cx->wincx) !=
+-                    SECSuccess) {
++                if (dsasig.len > sizeof(cx->u)) {
+                     PORT_SetError(SEC_ERROR_BAD_SIGNATURE);
+-                } else {
+-                    rv = SECSuccess;
++                    rv = SECFailure;
++                    break;
++                }
++                rv = PK11_Verify(cx->key, &dsasig, (SECItem *)digest, cx->wincx);
++                if (rv != SECSuccess) {
++                    PORT_SetError(SEC_ERROR_BAD_SIGNATURE);
+                 }
+                 break;
+             default:
+
diff --git a/SPECS/nss.spec b/SPECS/nss.spec
index e2bff8b..8310009 100644
--- a/SPECS/nss.spec
+++ b/SPECS/nss.spec
@@ -41,7 +41,7 @@ rpm.define(string.format("nss_archive_version %s",
 Summary:          Network Security Services
 Name:             nss
 Version:          %{nss_version}
-Release:          3%{?dist}
+Release:          4%{?dist}
 License:          MPLv2.0
 URL:              http://www.mozilla.org/projects/security/pki/nss/
 Group:            System Environment/Libraries
@@ -187,6 +187,9 @@ Patch300: nss-3.66-no-combo-tests.patch
 # because we can't reference external servers.
 Patch301: nss-3.66-disable-external-host-test.patch
 
+Patch400: nss-3.67-cve-2021-43527.patch
+Patch401: nss-3.67-cve-2021-43527-test.patch
+
 %description
 Network Security Services (NSS) is a set of libraries designed to
 support cross-platform development of security-enabled client and
@@ -305,6 +308,8 @@ pushd nss
 %patch203 -p1 -b .fix-pkcs12-policy
 %patch300 -p1 -b .oldsoft
 %patch301 -p1 -b .brew
+%patch400 -p1 -b .cve-2021-43527
+%patch401 -p1 -b .cve-2021-43527-test
 popd
 
 #########################################################
@@ -945,7 +950,10 @@ fi
 
 
 %changelog
-* Tue Sep 12 2021 Bob Relyea <rrelyea@redhat.com> - 3.67.0-3
+* Thu Nov 18 2021 Bob Relyea <rrelyea@redhat.com> - 3.67.0-4
+- fix CVE-2021-43527
+
+* Tue Sep 14 2021 Bob Relyea <rrelyea@redhat.com> - 3.67.0-3
 - revert sql default language in man pages
 - fix SEC_PKCS12EnableCipher so python-nss tests will still work.