From 222a596c55342c68ce7a77f9937b447d63faaec4 Mon Sep 17 00:00:00 2001
From: Matthew Jackson <1085847+MattJackson@users.noreply.github.com>
Date: Sun, 7 Jun 2026 20:49:55 -0700
Subject: [PATCH] libfreemkv 0.31.1: UDF Long-AD stride fix + MKB trim guard +
 regression tests

---
 CHANGELOG.md | 26 ++++++++++++++++++++++++++
 Cargo.toml   |  2 +-
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index f51b94e..2dcd65b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,31 @@
 # Changelog
 
+## 0.31.1 (2026-06-08)
+
+Correctness fixes for the file-backed mux and disc AACS-input read paths,
+plus regression tests.
+
+### Fixed
+
+- UDF: honor the ICB allocation-descriptor type flag. The extent reader
+  hardcoded an 8-byte Short-AD stride, so files using 16-byte Long ADs (large
+  BD-ROM `.m2ts` streams) were mis-strided: descriptor #0 read correctly, then
+  the allocation-list terminator tripped on the zero bytes mid-descriptor and
+  parsing stopped after the first extent. Every multi-extent title truncated
+  at ~1 GiB. Short/Long/Extended ADs are now strided correctly (8/16/20 bytes;
+  Extended ADs carry the extent LBA at offset +12). This repaired both the
+  file mux (`iso://`) and the disc AACS-input read (`/AACS/*.inf`).
+- AACS: never zero an MKB whose content length the parser cannot determine
+  (`mkb_content_len == 0` now leaves the buffer intact instead of truncating
+  it to empty).
+
+### Tests
+
+- Long-AD `read_icb_extents` and `read_file` coverage, Extended-AD stride,
+  sparse/terminator handling, continuation-loop bound, UDF name decoding, and
+  `trim_mkb` empty-guard; bad-sector recovery damage-skip range bounds and
+  bridge-degradation budget. Each verified to fail under a targeted mutation.
+
 ## 0.31.0 (2026-06-08)
 
 Hardening and correctness release: a library-wide review-and-fix pass across
diff --git a/Cargo.toml b/Cargo.toml
index c1e1dea..09dec02 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "libfreemkv"
-version = "0.31.0"
+version = "0.31.1"
 edition = "2024"
 rust-version = "1.86"
 license = "AGPL-3.0-only"