In assertPackageWithSharedUserIdIsPrivileged of InstallPackageHelper.java, there is a possible execution of arbitrary app code as a privileged app due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
https://source.android.com/security/bulletin/2024-04-01
https://android.googlesource.com/platform/frameworks/base/+/c7c1193ca7554fc3182ca9ab0f711bd118bdeef2