diff --git a/base/cvd/.bazelrc b/base/cvd/.bazelrc
index ffb3058d2b7..c1cdccd2b16 100644
--- a/base/cvd/.bazelrc
+++ b/base/cvd/.bazelrc
@@ -9,43 +9,61 @@ build --test_summary=terse
 # Match go/ubsan for always-enabled features
 # Docs: https://clang.llvm.org/docs/UndefinedBehaviorSanitizer.html
 
+# Out-of-bounds access into a statically sized array.
+build:dbg --copt=-fsanitize=array-bounds
+build:dbg --linkopt=-fsanitize=array-bounds
+build:fastbuild --copt=-fsanitize=array-bounds
+build:fastbuild --linkopt=-fsanitize=array-bounds
+
 # Use of a misaligned pointer or creation of a misaligned reference. Also
 # sanitizes assume_aligned-like attributes.
-build --copt=-fsanitize=alignment
-build --linkopt=-fsanitize=alignment
-
-# Out-of-bounds access into a statically sized array.
-build --copt=-fsanitize=array-bounds
-build --linkopt=-fsanitize=array-bounds
+build:dbg --copt=-fsanitize=alignment
+build:dbg --linkopt=-fsanitize=alignment
+build:fastbuild --copt=-fsanitize=alignment
+build:fastbuild --linkopt=-fsanitize=alignment
 
 # Load of a value of an enumerated type which is not in the range of
 # representable values for that enumerated type.
-build --copt=-fsanitize=enum
-build --linkopt=-fsanitize=enum
+build:dbg --copt=-fsanitize=enum
+build:dbg --linkopt=-fsanitize=enum
+build:fastbuild --copt=-fsanitize=enum
+build:fastbuild --linkopt=-fsanitize=enum
 
 # Conversion to, from, or between floating-point types which would overflow the
 # destination. Because the range of representable values for all floating-point
 # types supported by Clang is [-inf, +inf], the only cases detected are
 # conversions from floating point to integer types.
-build --copt=-fsanitize=float-cast-overflow
-build --linkopt=-fsanitize=float-cast-overflow
+build:dbg --copt=-fsanitize=float-cast-overflow
+build:dbg --linkopt=-fsanitize=float-cast-overflow
+build:fastbuild --copt=-fsanitize=float-cast-overflow
+build:fastbuild --linkopt=-fsanitize=float-cast-overflow
 
 # Use of a null pointer or creation of a null reference.
-build --copt=-fsanitize=null
-build --linkopt=-fsanitize=null
+build:dbg --copt=-fsanitize=null
+build:dbg --linkopt=-fsanitize=null
+build:fastbuild --copt=-fsanitize=null
+build:fastbuild --linkopt=-fsanitize=null
 
 # In C++, reaching the end of a value-returning function without returning a value.
-build --copt=-fsanitize=return
-build --linkopt=-fsanitize=return
+build:dbg --copt=-fsanitize=return
+build:dbg --linkopt=-fsanitize=return
+build:fastbuild --copt=-fsanitize=return
+build:fastbuild --linkopt=-fsanitize=return
 
 # Returning null pointer from a function which is declared to never return null.
-build --copt=-fsanitize=returns-nonnull-attribute
-build --linkopt=-fsanitize=returns-nonnull-attribute
+build:dbg--copt=-fsanitize=returns-nonnull-attribute
+build:dbg --linkopt=-fsanitize=returns-nonnull-attribute
+build:fastbuild--copt=-fsanitize=returns-nonnull-attribute
+build:fastbuild --linkopt=-fsanitize=returns-nonnull-attribute
 
 # If control flow reaches an unreachable program point.
-build --copt=-fsanitize=unreachable
-build --linkopt=-fsanitize=unreachable
+build:dbg --copt=-fsanitize=unreachable
+build:dbg --linkopt=-fsanitize=unreachable
+build:fastbuild --copt=-fsanitize=unreachable
+build:fastbuild --linkopt=-fsanitize=unreachable
 
 # A variable-length array whose bound does not evaluate to a positive value.
-build --copt=-fsanitize=vla-bound
-build --linkopt=-fsanitize=vla-bound
+build:dbg --copt=-fsanitize=vla-bound
+build:dbg --linkopt=-fsanitize=vla-bound
+build:fastbuild --copt=-fsanitize=vla-bound
+build:fastbuild --linkopt=-fsanitize=vla-bound