Recommended update for shim

Announcement ID: SUSE-RU-2021:2464-1
Rating: moderate
References:
Affected Products:
  • Basesystem Module 15-SP3
  • openSUSE Leap 15.3
  • SUSE Linux Enterprise Desktop 15 SP3
  • SUSE Linux Enterprise High Performance Computing 15 SP3
  • SUSE Linux Enterprise Real Time 15 SP3
  • SUSE Linux Enterprise Server 15 SP3
  • SUSE Linux Enterprise Server 15 SP3 Business Critical Linux 15-SP3
  • SUSE Linux Enterprise Server for SAP Applications 15 SP3
  • SUSE Manager Proxy 4.2
  • SUSE Manager Retail Branch Server 4.2
  • SUSE Manager Server 4.2

An update that has eight fixes can now be installed.

Description:

This update for shim fixes the following issues:

  • shim-install: Always assume "removable" for Azure to avoid the endless reset loop (bsc#1185464)
  • Avoid deleting the mirrored RT variables (bsc#1187696)
  • Split the keys in vendor-dbx.bin to vendor-dbx-sles and vendor-dbx-opensuse for shim-sles and shim-opensuse to reduce the size of MokListXRT (bsc#1185261)
  • Also update generate-vendor-dbx.sh in dbx-cert.tar.xz
  • Handle ignore_db and user_insecure_mode correctly (bsc#1185441, bsc#1187071)
  • Relax the maximum variable size check for u-boot (bsc#1185621)
  • Relax the check for import_mok_state() when Secure Boot is off. (bsc#1185261)
  • Ignore the odd LoadOptions length (bsc#1185232)
  • shim-install: reset def_shim_efi to "shim.efi" if the given file doesn't exist
  • Fided the size of rela sections for AArch64
  • Disable exporting vendor-dbx to MokListXRT since writing a large RT variable could crash some machines (bsc#1185261)
  • Avoid potential crash when calling QueryVariableInfo in EFI 1.10 machines (bsc#1187260)
  • Avoid buffer overflow when copying data to the MOK config table (bsc#1185232)

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • openSUSE Leap 15.3
    zypper in -t patch SUSE-2021-2464=1
  • Basesystem Module 15-SP3
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP3-2021-2464=1

Package List:

  • openSUSE Leap 15.3 (aarch64 x86_64)
    • shim-debuginfo-15.4-4.7.1
    • shim-15.4-4.7.1
    • shim-debugsource-15.4-4.7.1
  • Basesystem Module 15-SP3 (aarch64 x86_64)
    • shim-debuginfo-15.4-4.7.1
    • shim-15.4-4.7.1
    • shim-debugsource-15.4-4.7.1

References: