SUSE-SU-2026:0741-1: moderate: Security update for shim

SLE-SECURITY-UPDATES null at suse.de
Mon Mar 2 16:34:28 UTC 2026 


# Security update for shim

Announcement ID: SUSE-SU-2026:0741-1  
Release Date: 2026-03-02T08:11:32Z  
Rating: moderate  
References:

  * bsc#1240871
  * bsc#1247432

  
Cross-References:

  * CVE-2024-2312

  
CVSS scores:

  * CVE-2024-2312 ( SUSE ):  6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  * CVE-2024-2312 ( NVD ):  6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * Basesystem Module 15-SP7
  * openSUSE Leap 15.3
  * openSUSE Leap 15.6
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise High Performance Computing 15 SP4
  * SUSE Linux Enterprise High Performance Computing 15 SP5
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  * SUSE Linux Enterprise Micro 5.2
  * SUSE Linux Enterprise Micro 5.3
  * SUSE Linux Enterprise Micro 5.4
  * SUSE Linux Enterprise Micro 5.5
  * SUSE Linux Enterprise Micro for Rancher 5.2
  * SUSE Linux Enterprise Micro for Rancher 5.3
  * SUSE Linux Enterprise Micro for Rancher 5.4
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP4
  * SUSE Linux Enterprise Server 15 SP4 LTSS
  * SUSE Linux Enterprise Server 15 SP5
  * SUSE Linux Enterprise Server 15 SP5 LTSS
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves one vulnerability and has one security fix can now be
installed.

## Description:

This update for shim fixes the following issues:

shim is updated to version 16.1:

  * shim_start_image(): fix guid/handle pairing when uninstalling protocols
  * Fix uncompressed ipv6 netboot
  * fix test segfaults caused by uninitialized memory
  * SbatLevel_Variable.txt: minor typo fix.
  * Realloc() needs to allocate one more byte for sprintf()
  * IPv6: Add more check to avoid multiple double colon and illegal char
  * Loader proto v2
  * loader-protocol: add workaround for EDK2 2025.02 page fault on FreePages
  * Generate Authenticode for the entire PE file
  * README: mention new loader protocol and interaction with UKIs
  * shim: change automatically enable MOK_POLICY_REQUIRE_NX
  * Save var info
  * add SbatLevel entry 2025051000 for PSA-2025-00012-1
  * Coverity fixes 20250804
  * fix http boot
  * Fix double free and leak in the loader protocol

shim is updated to version 16.0:

  * Validate that a supplied vendor cert is not in PEM format
  * sbat: Add grub.peimage,2 to latest (CVE-2024-2312)
  * sbat: Also bump latest for grub,4 (and to todays date)
  * undo change that limits certificate files to a single file
  * shim: don't set second_stage to the empty string
  * Fix SBAT.md for today's consensus about numbers
  * Update Code of Conduct contact address
  * make-certs: Handle missing OpenSSL installation
  * Update MokVars.txt
  * export DEFINES for sub makefile
  * Drop unused EFI_IMAGE_SECURITY_DATABASE_GUID definition
  * Null-terminate 'arguments' in fallback
  * Fix "Verifiying" typo in error message
  * Update Fedora CI targets
  * Force gcc to produce DWARF4 so that gdb can use it
  * Minor housekeeping 2024121700
  * Discard load-options that start with WINDOWS
  * Fix the issue that the gBS->LoadImage pointer was empty.
  * shim: Allow data after the end of device path node in load options
  * Handle network file not found like disks
  * Update gnu-efi submodule for EFI_HTTP_ERROR
  * Increase EFI file alignment
  * avoid EFIv2 runtime services on Apple x86 machines
  * Improve shortcut performance when comparing two boolean expressions
  * Provide better error message when MokManager is not found
  * tpm: Boot with a warning if the event log is full
  * MokManager: remove redundant logical constraints
  * Test import_mok_state() when MokListRT would be bigger than available size
  * test-mok-mirror: minor bug fix
  * Fix file system browser hang when enrolling MOK from disk
  * Ignore a minor clang-tidy nit
  * Allow fallback to default loader when encountering errors on network boot
  * test.mk: don't use a temporary random.bin
  * pe: Enhance debug report for update_mem_attrs
  * Multiple certificate handling improvements
  * Generate SbatLevel Metadata from SbatLevel_Variable.txt
  * Apply EKU check with compile option
  * Add configuration option to boot an alternative 2nd stage
  * Loader protocol (with Device Path resolution support)
  * netboot cleanup for additional files
  * Document how revocations can be delivered
  * post-process-pe: add tests to validate NX compliance
  * regression: CopyMem() in ad8692e copies out of bounds
  * Save the debug and error logs in mok-variables
  * Add features for the Host Security ID program
  * Mirror some more efi variables to mok-variables
  * This adds DXE Services measurements to HSI and uses them for NX
  * Add shim's current NX_COMPAT status to HSIStatus
  * README.tpm: reflect that vendor_db is in fact logged as "vendor_db"
  * Reject HTTP message with duplicate Content-Length header fields
  * Disable log saving
  * fallback: don't add new boot order entries backwards
  * README.tpm: Update MokList entry to MokListRT
  * SBAT Level update for February 2025 GRUB CVEs

## 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-2026-741=1

  * openSUSE Leap 15.6  
    zypper in -t patch openSUSE-SLE-15.6-2026-741=1

  * SUSE Linux Enterprise Micro for Rancher 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2026-741=1

  * SUSE Linux Enterprise Micro 5.3  
    zypper in -t patch SUSE-SLE-Micro-5.3-2026-741=1

  * SUSE Linux Enterprise Micro for Rancher 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2026-741=1

  * SUSE Linux Enterprise Micro 5.4  
    zypper in -t patch SUSE-SLE-Micro-5.4-2026-741=1

  * SUSE Linux Enterprise Micro 5.5  
    zypper in -t patch SUSE-SLE-Micro-5.5-2026-741=1

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-741=1

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-741=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-741=1

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-741=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-741=1

  * SUSE Linux Enterprise Server 15 SP4 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-741=1

  * SUSE Linux Enterprise Server 15 SP5 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-741=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP4  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-741=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP5  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-741=1

  * SUSE Linux Enterprise Micro 5.2  
    zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-741=1

  * SUSE Linux Enterprise Micro for Rancher 5.2  
    zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-741=1

## Package List:

  * openSUSE Leap 15.3 (aarch64 x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * openSUSE Leap 15.6 (aarch64 x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise Micro 5.3 (aarch64 x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise Micro 5.4 (aarch64 x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise Micro 5.5 (aarch64 x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * Basesystem Module 15-SP7 (aarch64 x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64
    x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64
    x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64
    x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64
    x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise Micro 5.2 (aarch64 x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3
  * SUSE Linux Enterprise Micro for Rancher 5.2 (aarch64 x86_64)
    * shim-16.1-150300.4.31.3
    * shim-debugsource-16.1-150300.4.31.3
    * shim-debuginfo-16.1-150300.4.31.3

## References:

  * https://www.suse.com/security/cve/CVE-2024-2312.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1240871
  * https://bugzilla.suse.com/show_bug.cgi?id=1247432

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