#1148726 intel-microcode: 3.20250812.1~deb11u1 package missing from security.debian.org

Package:
intel-microcode
Source:
intel-microcode
Submitter:
Mauro Molinari
Date:
2026-10-04 11:49:04 UTC
Severity:
normal
#1148726#5
Date:
2026-09-22 18:13:07 UTC
From:
To:
Dear Maintainer,

although listed as available with "apt update" and on page https://packages.debian.org/bullseye/amd64/intel-microcode/download, this package is missing from that site:

http://security.debian.org/debian-security/pool/updates/non-free/i/intel-microcode/intel-microcode_3.20250812.1%7edeb11u1_amd64.deb  404  Not Found

So, I can't install it with regular "apt install intel-microcode".

This is what "apt policy intel-microcode" shows:

intel-microcode:
  Installato: (nessuno)
  Candidato:  3.20250812.1~deb11u1
  Tabella versione:
     3.20250812.1~deb11u1 500
        500 http://security.debian.org/debian-security bullseye-security/non-free amd64 Packages
     3.20240813.1~deb11u1 500
        500 http://ftp.it.debian.org/debian bullseye/non-free amd64 Packages

This is the contents of my /etc/apt/sources.list:

deb http://ftp.it.debian.org/debian/ bullseye main contrib non-free
deb-src http://ftp.it.debian.org/debian/ bullseye main contrib non-free
deb http://security.debian.org/debian-security bullseye-security main contrib non-free
deb-src http://security.debian.org/debian-security bullseye-security main contrib non-free
deb http://ftp.it.debian.org/debian/ bullseye-updates main contrib non-free
deb-src http://ftp.it.debian.org/debian/ bullseye-updates main contrib non-free

I was not able to find anyone reporting this on the Internet, or a solution. I could install the older version of the package (3.20240813.1~deb11u1) but preferred to try this path first.

By the way, the same problem exists for amd-microcode package:
http://security.debian.org/debian-security/pool/updates/non-free/a/amd64-microcode/amd64-microcode_3.20250311.1%7edeb11u1_amd64.deb  404  Not Found
Please tell me if I should open a separate bug for that.
#1148726#10
Date:
2026-09-27 20:53:56 UTC
From:
To:
Control: reassign -1 ftp.debian.org
Control: forcemerge 1147093 -1

This is not really a problem with the intel-microcode package, but
rather a problem with how the end of the standard (non-LTS) support
period for bullseye was handled from the archive management end of
things:

https://bugs.debian.org/1147093

Thanks,
#1148726#21
Date:
2026-10-04 11:46:27 UTC
From:
To:
bullseye-security and bullseye-security-debug are now available from
archive.d.o:

- https://archive.debian.org/debian-security/dists/bullseye-security/
- https://archive.debian.org/debian-security-debug/dists/bullseye-security-debug/

Ansgar