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author | Chris Manton <cmanton@google.com> | 2021-09-29 17:49:25 -0700 |
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committer | Chris Manton <cmanton@google.com> | 2021-10-06 05:41:29 +0000 |
commit | fa98e7e86947b0035123b77cf7e1c0b969db71f6 (patch) | |
tree | fccb4a997aadecb39f88e85c054056bc2c8846be | |
parent | b474562c539b82887cbccc7b68d17877c579c2ff (diff) | |
download | bt-fa98e7e86947b0035123b77cf7e1c0b969db71f6.tar.gz |
osi: Prevent memory allocations with MSB set
Limit allocations on 32bit to 2 GB
Limit allocations on 64bit to 8 Exabyte
Bug: 197868577
Tag: #refactor
Test: gd/cert/run
Ignore-AOSP-First: Security
Change-Id: I1c347084d7617b1e364a3241f1b37b398a2a6c6a
-rw-r--r-- | osi/src/allocator.cc | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/osi/src/allocator.cc b/osi/src/allocator.cc index 1c0449e14..e2c356dd3 100644 --- a/osi/src/allocator.cc +++ b/osi/src/allocator.cc @@ -56,6 +56,7 @@ char* osi_strndup(const char* str, size_t len) { } void* osi_malloc(size_t size) { + CHECK(static_cast<ssize_t>(size) >= 0); size_t real_size = allocation_tracker_resize_for_canary(size); void* ptr = malloc(real_size); CHECK(ptr); @@ -63,6 +64,7 @@ void* osi_malloc(size_t size) { } void* osi_calloc(size_t size) { + CHECK(static_cast<ssize_t>(size) >= 0); size_t real_size = allocation_tracker_resize_for_canary(size); void* ptr = calloc(1, real_size); CHECK(ptr); |