[PATCH 24/25] doc: add release notes for BPF validation fixes

[Marat Khalili <marat.khalili@huawei.com>]

Document the following new features and fixes:
* Added BPF validation debugger API (rte_bpf_validate_debug_*).
* Hardened BPF validator with numerous bug fixes and UB preventions.

Signed-off-by: Marat Khalili <marat.khalili@huawei.com>
---
 doc/guides/rel_notes/release_26_07.rst | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/doc/guides/rel_notes/release_26_07.rst b/doc/guides/rel_notes/release_26_07.rst
index 18810ab81d93..4ef2d354635b 100644
--- a/doc/guides/rel_notes/release_26_07.rst
+++ b/doc/guides/rel_notes/release_26_07.rst
@@ -83,6 +83,22 @@ New Features
   ``rte_bpf_eth_tx_install`` for installing already loaded BPF programs as
   port callbacks (as opposed to loading them directly from ELF files).
 
+* **Hardened BPF validator.**
+
+  Fixed numerous bugs in the BPF validator's abstract interpretation logic,
+  including incorrect bounds tracking for jumps and arithmetic operations, as
+  well as fixing several instances of undefined behavior (UB) when verifying
+  malicious or corrupt programs.
+
+* **Added BPF validation debugger API.**
+
+  Introduced a new set of APIs (prefixed with ``rte_bpf_validate_debug_``) to
+  introspect the BPF validator. This provides a mechanism to set breakpoints or
+  catchpoints during validation and inspect the verifier's internal state
+  (such as tracked register bounds). This API is crucial primarily for writing
+  comprehensive tests for the validator, but also serves as a foundation for a
+  future interactive eBPF validation debugger.
+
 
 Removed Items
 -------------
-- 
2.43.0