feat(real-world-vfc-slice): add labeled OpenSSL/Firefox/Chromium/curl pair corpus

Harvest 176 isolated vuln-vs-fix functions (109 CVEs, 352 training rows) into benchmarks/pairs/vfc with provenance and a JSONL training manifest. Score the slice as an honesty dashboard (ousast pairs --slice vfc); keep the pair gate on the local fixtures only.
2026-10-20 21:49:28 +00:00 · 2026-09-04 16:45:38 +02:00
parent e9f185da59
commit 0116f9bea6
372 changed files with 49209 additions and 49 deletions
@@ -0,0 +1,65 @@
+/* Provenance: openssl/openssl kek_unwrap_key (fixed).
+ * repo: openssl/openssl
+ * commit: a79c4ce559c6a3a8fd4109e9f33c1185d5bf2def
+ * parent: 7e0fc054a08706d194d3355aba4a06003cadfb29
+ * commit_url: https://github.com/openssl/openssl/commit/a79c4ce559c6a3a8fd4109e9f33c1185d5bf2def
+ * cve: CVE-2025-9230
+ * license: Apache-2.0
+ * function: kek_unwrap_key
+ * relpath: crypto/cms/cms_pwri.c
+ */
+
+static int kek_unwrap_key(unsigned char *out, size_t *outlen,
+                          const unsigned char *in, size_t inlen,
+                          EVP_CIPHER_CTX *ctx)
+{
+    size_t blocklen = EVP_CIPHER_CTX_get_block_size(ctx);
+    unsigned char *tmp;
+    int outl, rv = 0;
+    if (inlen < 2 * blocklen) {
+        /* too small */
+        return 0;
+    }
+    if (inlen % blocklen) {
+        /* Invalid size */
+        return 0;
+    }
+    if ((tmp = OPENSSL_malloc(inlen)) == NULL) {
+        ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
+        return 0;
+    }
+    /* setup IV by decrypting last two blocks */
+    if (!EVP_DecryptUpdate(ctx, tmp + inlen - 2 * blocklen, &outl,
+                           in + inlen - 2 * blocklen, blocklen * 2)
+        /*
+         * Do a decrypt of last decrypted block to set IV to correct value
+         * output it to start of buffer so we don't corrupt decrypted block
+         * this works because buffer is at least two block lengths long.
+         */
+        || !EVP_DecryptUpdate(ctx, tmp, &outl,
+                              tmp + inlen - blocklen, blocklen)
+        /* Can now decrypt first n - 1 blocks */
+        || !EVP_DecryptUpdate(ctx, tmp, &outl, in, inlen - blocklen)
+
+        /* Reset IV to original value */
+        || !EVP_DecryptInit_ex(ctx, NULL, NULL, NULL, NULL)
+        /* Decrypt again */
+        || !EVP_DecryptUpdate(ctx, tmp, &outl, tmp, inlen))
+        goto err;
+    /* Check check bytes */
+    if (((tmp[1] ^ tmp[4]) & (tmp[2] ^ tmp[5]) & (tmp[3] ^ tmp[6])) != 0xff) {
+        /* Check byte failure */
+        goto err;
+    }
+    if (inlen < 4 + (size_t)tmp[0]) {
+        /* Invalid length value */
+        goto err;
+    }
+    *outlen = (size_t)tmp[0];
+    memcpy(out, tmp + 4, *outlen);
+    rv = 1;
+ err:
+    OPENSSL_clear_free(tmp, inlen);
+    return rv;
+
+}