commit a3b72067de65d37d8b646e699b900e984d70165d
author Keith Mok <keithmok@google.com> Fri Dec 31 05:09:32 2021 +0000
committer Keith Mok <keithmok@google.com> Fri Jan 14 00:37:48 2022 +0000
tree 0e3c901d3fcb4285f2778a95285e3686e5093f0d
parent e060580c31630d325323ee4341be9d30072387b1

Add checking for sparse file format

Sparse file can come from an untrusted source.
Need more checking to ensure that it is not a malformed
file and would not cause any OOB read access.

Update fuzz test for decoding also.

Test: adb reboot fastboot
      fuzzy_fastboot --gtest_filter=Fuzz.Sparse*
      fuzzy_fastboot --gtest_filter=Conformance.Sparse*
      sparse_fuzzer
Bug: 212705418
Change-Id: I7622df307bb00e59faaba8bb2c67cb474cffed8e

libsparse/Android.bp

diff --git a/libsparse/Android.bp b/libsparse/Android.bp
index 3f9aeb2..02bfee6 100644
--- a/libsparse/Android.bp
+++ b/libsparse/Android.bp
@@ -96,12 +96,14 @@
 
 cc_fuzz {
     name: "sparse_fuzzer",
-    host_supported: false,
+    host_supported: true,
     srcs: [
         "sparse_fuzzer.cpp",
     ],
     static_libs: [
         "libsparse",
+        "libbase",
+        "libz",
         "liblog",
     ],
 }