### Changes between 3.3.0 and 3.3.1 [xx XXX xxxx]
+ * Fixed potential use after free after SSL_free_buffers() is called.
+
+ The SSL_free_buffers function is used to free the internal OpenSSL
+ buffer used when processing an incoming record from the network.
+ The call is only expected to succeed if the buffer is not currently
+ in use. However, two scenarios have been identified where the buffer
+ is freed even when still in use.
+
+ The first scenario occurs where a record header has been received
+ from the network and processed by OpenSSL, but the full record body
+ has not yet arrived. In this case calling SSL_free_buffers will succeed
+ even though a record has only been partially processed and the buffer
+ is still in use.
+
+ The second scenario occurs where a full record containing application
+ data has been received and processed by OpenSSL but the application has
+ only read part of this data. Again a call to SSL_free_buffers will
+ succeed even though the buffer is still in use.
+
+ ([CVE-2024-4741])
+
+ *Matt Caswell*
+
* Fixed an issue where checking excessively long DSA keys or parameters may
be very slow.
<!-- Links -->
+[CVE-2024-4741]: https://www.openssl.org/news/vulnerabilities.html#CVE-2024-4741
+[CVE-2024-4603]: https://www.openssl.org/news/vulnerabilities.html#CVE-2024-4603
[CVE-2024-2511]: https://www.openssl.org/news/vulnerabilities.html#CVE-2024-2511
[CVE-2024-0727]: https://www.openssl.org/news/vulnerabilities.html#CVE-2024-0727
[CVE-2023-6237]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-6237
### Major changes between OpenSSL 3.3.0 and OpenSSL 3.3.1 [under development]
- * none
+OpenSSL 3.3.1 is a security patch release. The most severe CVE fixed in this
+release is Low.
+
+This release incorporates the following bug fixes and mitigations:
+
+ * Fixed potential use after free after SSL_free_buffers() is called
+ ([CVE-2024-4741])
+
+ * Fixed an issue where checking excessively long DSA keys or parameters may
+ be very slow
+ ([CVE-2024-4603])
### Major changes between OpenSSL 3.2 and OpenSSL 3.3.0 [9 Apr 2024]
* Fixed PKCS12 Decoding crashes
([CVE-2024-0727])
+
* Fixed excessive time spent checking invalid RSA public keys
([CVE-2023-6237])
+
* Fixed POLY1305 MAC implementation corrupting vector registers on PowerPC
CPUs which support PowerISA 2.07
([CVE-2023-6129])
<!-- Links -->
+[CVE-2024-4741]: https://www.openssl.org/news/vulnerabilities.html#CVE-2024-4741
+[CVE-2024-4603]: https://www.openssl.org/news/vulnerabilities.html#CVE-2024-4603
[CVE-2024-2511]: https://www.openssl.org/news/vulnerabilities.html#CVE-2024-2511
[CVE-2024-0727]: https://www.openssl.org/news/vulnerabilities.html#CVE-2024-0727
[CVE-2023-6237]: https://www.openssl.org/news/vulnerabilities.html#CVE-2023-6237