diff --git a/services/mediacodec/seccomp_policy/mediacodec-arm.policy b/services/mediacodec/seccomp_policy/mediacodec-arm.policy
index 6ec8895..edf4dab 100644
--- a/services/mediacodec/seccomp_policy/mediacodec-arm.policy
+++ b/services/mediacodec/seccomp_policy/mediacodec-arm.policy
@@ -55,4 +55,8 @@
 getdents64: 1
 getrandom: 1
 
+# Used by UBSan diagnostic messages
+readlink: 1
+open: 1
+
 @include /system/etc/seccomp_policy/crash_dump.arm.policy
diff --git a/services/mediacodec/seccomp_policy/mediacodec-x86.policy b/services/mediacodec/seccomp_policy/mediacodec-x86.policy
index bbbe552..6e6b276 100644
--- a/services/mediacodec/seccomp_policy/mediacodec-x86.policy
+++ b/services/mediacodec/seccomp_policy/mediacodec-x86.policy
@@ -55,4 +55,8 @@
 getpid: 1
 gettid: 1
 
+# Used by UBSan diagnostic messages
+readlink: 1
+open: 1
+
 @include /system/etc/seccomp_policy/crash_dump.x86.policy