Update NEWS.md with release notes for 1.5.1

Author: val-ms

NEWS.md

@@ -7,6 +7,31 @@ differ slightly from third-party binary packages.
 
 ClamAV 1.5.1 is a patch release with the following fixes:
 
+- Fixed a significant performance issue when scanning some PE files.
+
+- Fixed an issue recording file entries from a ZIP archive central directory
+  which resulted in "Heuristics.Limits.Exceeded.MaxFiles" alerts when using the
+  ClamScan `--alert-exceeds-max` command line option or ClamD `AlertExceedsMax`
+  config file option.
+
+- Improved performance when scanning TNEF email attachments.
+
+- Fixed an issue with recording metadata for OOXML office documents.
+
+- Fixed an issue with signature matches for VBA in OLE2 office documents.
+
+- Loosened overly restrictive rules for embedded file identification and
+  increased the limit for finding PE files embedded in other PE files.
+
+- Fixed an issue with extracting some RAR archives embedded in other files.
+
+- Fixed an issue with calculating fuzzy hashes affecting some images by updating
+  the version for several Rust library dependencies.
+  - This release does not require a newer version of the Rust compiler toolchain
+    than what was required for ClamAV 1.5.0.
+
+[GitHub pull request](https://github.com/Cisco-Talos/clamav/pull/1606)
+
 ## 1.5.0
 
 ClamAV 1.5.0 includes the following improvements and changes: