I applied 'sudo sysctl kernel.unprivileged_bpf_disabled=1'

But it is still failed while install 'sudo apt install linux-
image-5.11.0-46-generic'

dpkg: error processing archive 
/var/cache/apt/archives/linux-image-5.11.0-46-generic_5.11.0-46.51~20.04.1_amd64.deb
 (--unpack):
 unable to open '/boot/vmlinuz-5.11.0-46-generic.dpkg-new': Operation not 
permitted

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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1956585

Title:
  OOB write on BPF_RINGBUF

Status in linux package in Ubuntu:
  Fix Released

Bug description:
  tr3e wang discovered that an OOB write existed in the eBPF subsystem
  in the Linux kernel on BPF_RINGBUF.

  Mitigation commit: https://git.launchpad.net/~ubuntu-
  
kernel/ubuntu/+source/linux/+git/impish/commit/?id=53fb7741ff9d546174dbb585957b4f8b6afbdb83

  Mitigation:

  Disable unprivileged ebpf with:

    $ sudo sysctl kernel.unprivileged_bpf_disabled=1

  Unprivileged ebpf is disabled by default in Ubuntu 21.10 and newer.
  See https://www.kernel.org/doc/html/latest/admin-
  guide/sysctl/kernel.html#unprivileged-bpf-disabled for details on the
  configuration setting.

To manage notifications about this bug go to:
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