From: Kostya Shishkov <kostya.shishkov@gmail.com>
Date: Sat, 30 Sep 2023 09:46:18 +0000 (+0200)
Subject: smacker: add forgotten recursion depth check
X-Git-Url: https://git.nihav.org/?p=nihav.git;a=commitdiff_plain;h=2c031ed0963cfb3a37ba6c5d4b64d9bbc4250832

smacker: add forgotten recursion depth check
---

diff --git a/nihav-rad/src/codecs/smacker.rs b/nihav-rad/src/codecs/smacker.rs
index d834c7e..7ecd443 100644
--- a/nihav-rad/src/codecs/smacker.rs
+++ b/nihav-rad/src/codecs/smacker.rs
@@ -94,6 +94,7 @@ const SMK_LAST_UNINIT: usize = 0xFFFFFFFF;
 impl SmackerTree16Builder {
     fn get_tree16(&mut self, br: &mut BitReader, tree: &mut SmackerTree16, depth: usize) -> DecoderResult<u32> {
         validate!(tree.tree.len() < self.nsyms);
+        validate!(depth <= 32);
         if !br.read_bool()? {
             let lo = br.read_tree8(&self.tree_lo)?;
             let hi = br.read_tree8(&self.tree_hi)?;