package linux-image-5.13.0-40-generic (not installed) failed to install/upgrade: unable to open '/boot/vmlinuz-5.13.0-40-generic.dpkg-new': Operation not permitted

[Mayank Jaggi]

fixing bug

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: linux-image-5.13.0-40-generic (not installed)
ProcVersionSignature: Ubuntu 5.13.0-39.44~20.04.1-generic 5.13.19
Uname: Linux 5.13.0-39-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.23
Architecture: amd64
CasperMD5CheckResult: skip
Date: Wed Apr 20 16:40:50 2022
DuplicateSignature:
 package:linux-image-5.13.0-40-generic:(not installed)
 Unpacking linux-image-5.13.0-40-generic (5.13.0-40.45~20.04.1) ...
 dpkg: error processing archive /tmp/apt-dpkg-install-JLEEPz/3-linux-image-5.13.0-40-generic_5.13.0-40.45~20.04.1_amd64.deb (--unpack):
  unable to open '/boot/vmlinuz-5.13.0-40-generic.dpkg-new': Operation not permitted
ErrorMessage: unable to open '/boot/vmlinuz-5.13.0-40-generic.dpkg-new': Operation not permitted
InstallationDate: Installed on 2022-02-03 (75 days ago)
InstallationMedia: Ubuntu 20.04.3 LTS "Focal Fossa" - Release amd64 (20210819)
Python3Details: /usr/bin/python3.8, Python 3.8.10, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.6
SourcePackage: linux-signed-hwe-5.13
Title: package linux-image-5.13.0-40-generic (not installed) failed to install/upgrade: unable to open '/boot/vmlinuz-5.13.0-40-generic.dpkg-new': Operation not permitted
UpgradeStatus: No upgrade log present (probably fresh install)

[Seth Arnold (seth-arnold)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.