Atualização de firmware incomum = dmesg: "microcódigo: microcódigo atualizado antecipadamente para revisão 0xf8, data = 2023-09-28"

Após desbloquear o disco, a verborragia usual mudou e havia uma mensagem sobre baixar firmware. Quero descobrir o que estava acontecendo, então tentei dmsg -

% sudo dmsg
[    0.000000] microcode: microcode updated early to revision 0xf8, date = 2023-09-28
[    0.000000] Linux version 6.1.0-30-amd64 ([email protected]) (gcc-12 (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40) #1 SMP PREEMPT_DYNAMIC Debian 6.1.124-1 (2025-01-12)

A mensagem do microcódigo é muito vaga. É incomum?

Como posso determinar qual firmware tenho, o que devo ter e o que está disponível?

Editar: topo do changelog.Debian

intel-microcode (3.20241112.1~deb12u1) bookworm; urgency=medium

  * Build for bookworm
  * All trixie-only changes (from 3.20240813.2) are reverted on this branch

 -- Henrique de Moraes Holschuh <[email protected]>  Sat, 07 Dec 2024 14:49:05 -0300

intel-microcode (3.20241112.1) unstable; urgency=medium

  * New upstream microcode datafile 20241112 (closes: #1086483)
    - Mitigations for INTEL-SA-01101 (CVE-2024-21853)
      Improper Finite State Machines (FSMs) in the Hardware logic in some
      4th and 5th Generation Intel Xeon Processors may allow an authorized
      user to potentially enable denial of service via local access.
    - Mitigations for INTEL-SA-01079 (CVE-2024-23918)
      Potential security vulnerabilities in some Intel Xeon processors
      using Intel SGX may allow escalation of privilege.  Intel disclosed
      that some processor models were already fixed by a previous
      microcode update.
    - Updated mitigations for INTEL-SA-01097 (CVE-2024-24968)
      Improper finite state machines (FSMs) in hardware logic in some
      Intel Processors may allow an privileged user to potentially enable a
      denial of service via local access.
    - Mitigations for INTEL-SA-01103 (CVE-2024-23984)
      A potential security vulnerability in the Running Average Power Limit
      (RAPL) interface for some Intel Processors may allow information
      disclosure.  Added mitigations for more processor models.
  * Updated Microcodes:
    sig 0x000806f8, pf_mask 0x87, 2024-06-20, rev 0x2b000603, size 588800
    sig 0x000806f7, pf_mask 0x87, 2024-06-20, rev 0x2b000603
    sig 0x000806f6, pf_mask 0x87, 2024-06-20, rev 0x2b000603
    sig 0x000806f5, pf_mask 0x87, 2024-06-20, rev 0x2b000603
    sig 0x000806f4, pf_mask 0x87, 2024-06-20, rev 0x2b000603
    sig 0x00090672, pf_mask 0x07, 2024-05-29, rev 0x0037, size 224256
    sig 0x00090675, pf_mask 0x07, 2024-05-29, rev 0x0037
    sig 0x000b06f2, pf_mask 0x07, 2024-05-29, rev 0x0037
    sig 0x000b06f5, pf_mask 0x07, 2024-05-29, rev 0x0037
    sig 0x000906a3, pf_mask 0x80, 2024-06-03, rev 0x0435, size 223232
    sig 0x000906a4, pf_mask 0x80, 2024-06-03, rev 0x0435
    sig 0x000a06a4, pf_mask 0xe6, 2024-08-02, rev 0x0020, size 138240
    sig 0x000b06a2, pf_mask 0xe0, 2024-05-29, rev 0x4123, size 220160
    sig 0x000b06a3, pf_mask 0xe0, 2024-05-29, rev 0x4123
    sig 0x000b06a8, pf_mask 0xe0, 2024-05-29, rev 0x4123
    sig 0x000c06f2, pf_mask 0x87, 2024-06-20, rev 0x21000283, size 560128
    sig 0x000c06f1, pf_mask 0x87, 2024-06-20, rev 0x21000283
  * source: update symlinks to reflect id of the latest release, 20241112
  * Update changelog for 3.20240910.1 and 3.20240813.1 with new information:
    INTEL-SA-1103 was addressed by 3.20240813.1 for some processor models,
    and not by 3.20240910. INTEL-SA-1079 was addressed by 3.20240910.1 for
    some processor models.

 -- Henrique de Moraes Holschuh <[email protected]>  Thu, 14 Nov 2024 15:37:40 -0300