Version in base suite: 6.12.43+1
Version in overlay suite: 6.12.48+1

Base version: linux-signed-amd64_6.12.48+1
Target version: linux-signed-amd64_6.12.57+1
Base files: linux-signed-amd64_6.12.48+1.dsc
Target files: linux-signed-amd64_6.12.57+1.dsc

-E: version-substvar-for-external-package Depends ${binary:Version} linux-headers-amd64 -> linux-headers-6.12.48+deb13-amd64 [debian/control:18]
-E: version-substvar-for-external-package Depends ${binary:Version} linux-headers-cloud-amd64 -> linux-headers-6.12.48+deb13-cloud-amd64 [debian/control:26]
-E: version-substvar-for-external-package Depends ${binary:Version} linux-headers-rt-amd64 -> linux-headers-6.12.48+deb13-rt-amd64 [debian/control:34]
-W: odd-historical-debian-changelog-version 6.12.43-1 (for native) [debian/changelog:760]
+E: version-substvar-for-external-package Depends ${binary:Version} linux-headers-amd64 -> linux-headers-6.12.57+deb13-amd64 [debian/control:18]
+E: version-substvar-for-external-package Depends ${binary:Version} linux-headers-cloud-amd64 -> linux-headers-6.12.57+deb13-cloud-amd64 [debian/control:26]
+E: version-substvar-for-external-package Depends ${binary:Version} linux-headers-rt-amd64 -> linux-headers-6.12.57+deb13-rt-amd64 [debian/control:34]
+W: odd-historical-debian-changelog-version 6.12.48-1 (for native) [debian/changelog:1001]