<div class="container">
<h1>Recommended update for shim</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-RU-2026:5112-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-11-05T08:11:17Z</td>
</tr>
<tr>
<th>Rating:</th>
<td>important</td>
</tr>
<tr>
<th>References:</th>
<td>
<ul>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1210382">bsc#1210382</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1254336">bsc#1254336</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1259096">bsc#1259096</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269084">bsc#1269084</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1270036">bsc#1270036</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1278729">bsc#1278729</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1285863">bsc#1285863</a>
</li>
<li style="display: inline;">
<a href="https://jira.suse.com/browse/PED-13361">jsc#PED-13361</a>
</li>
<li style="display: inline;">
<a href="https://jira.suse.com/browse/PED-15978">jsc#PED-15978</a>
</li>
</ul>
</td>
</tr>
<tr>
<th>Affected Products:</th>
<td>
<ul class="list-group">
<li class="list-group-item">Basesystem Module 15-SP7</li>
<li class="list-group-item">openSUSE Leap 15.3</li>
<li class="list-group-item">SUSE Linux Enterprise Desktop 15 SP7</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing 15 SP5</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing LTSS 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing LTSS 15 SP5</li>
<li class="list-group-item">SUSE Linux Enterprise Micro 5.3</li>
<li class="list-group-item">SUSE Linux Enterprise Micro 5.4</li>
<li class="list-group-item">SUSE Linux Enterprise Micro 5.5</li>
<li class="list-group-item">SUSE Linux Enterprise Micro for Rancher 5.3</li>
<li class="list-group-item">SUSE Linux Enterprise Micro for Rancher 5.4</li>
<li class="list-group-item">SUSE Linux Enterprise Real Time 15 SP7</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP4 LTSS</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP5</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP5 LTSS</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP6</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP6 LTSS</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP7</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 15 SP5</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 15 SP6</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 15 SP7</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>An update that contains two features and has seven fixes can now be installed.</p>
<h2>Description:</h2>
<p>This update for shim fixes the following issues:</p>
<p>Support a nx-shim (jsc#PED-13361 jsc#PED-15978):</p>
<p>This marks data sections as "non executable" during the UEFI boot process.</p>
<p>shim-install: separate the logic of grabbing OS_ID
When the GRUB_DISTRIBUTOR can be grab by /etc/default/grub. The
logic of grabbing OS_ID from os-release will be ignored.
For example: SL-Micro 6.1 has GRUB_DISTRIBUTOR="SL Micro" in
/etc/default/grub.</p>
<p>We always need OS_ID for subsequent processing logic. So this
patch separate the logic of grabbing OS_ID. (bsc#1285863#c14)</p>
<p>shim-install: refactory the logic of update_boot for fixing two issues
Refactory the logic of update_boot for updating EFI default boot path
in shim-install and fixed two issues:</p>
<ul>
<li>The fallback efi NOT be copied to the default efi boot path for SLE
(bsc#1285863)</li>
<li>
<p>The encrypted SL-Micro uses 'removable=yes' for TPM key unsealing. But
the original logic did NOT copy MokManager to EFI default boot path.
(bsc#1285863#11)</p>
</li>
<li>
<p>Add Requires tags for checking the grub2 sbat generation at RPM
level, so we make sure we are not blocking the grub2 during boot. (bsc#1278729)</p>
</li>
<li>
<p>Use nx shim as the default shim binary for SLES 16.1 and newer
in older versions the non-nx shim is default. The nx shim
can still be selected.</p>
</li>
<li>
<p>shim-install: Do not update fallback on sl-micro when the fallback
is not in efi default boot path</p>
</li>
</ul>
<p>The SL-Micro SelfInstall image direct unpackage the raw image to
the hard drive on target machine. The kiwi produced the raw image
by 'shim-install --removable' command. So the raw image does NOT
include fallback.efi in the EFI default boot path (aka. the
removable boot path, EFI/boot/). Looks that SL-Micro does NOT care
the fallback function of SUSE boot entry is lost.
Normally, with or without fallback.efi should NOT case problem when
booting. Also, the distro (SL-Micro in this case) does NOT care fallback
function. But some issue machine's firmware can ONLY boot with the
removable boot path (aka. the default boot path, /EFI/boot/bootx64.efi).
And issue firmware always modified boot order or even removed SUSE boot
entry. It causes that the fallback.efi always be triggered in every
booting. The outward symptom is an endless cycle of rebooting and showing
the fallback prompt box.
The above situation NOT be found before we fix bsc#1254336. In
bsc#1254336, the shim-install did NOT update the files in removable boot
path. e.g. /EFI/boot/bootx64.efi or /EFI/boot/fallback.efi.
So we will NOT update fallback.efi on SL-Micro when shim-install did NOT
see fallback in the removable boot path (EFI/boot/fallback.efi). No
fallback.efi in the removable boot path means that the target system
is installed by wiki raw image. (bsc#1270036)</p>
<ul>
<li>Update shim-install to limit the scope of the 'removable' SL-Micro to the image booting with TPM2 unsealing (bsc#1210382)</li>
<li>shim-install: Add ca_string for SL Micro to update fallback loader (bsc#1254336)</li>
<li>Update change log for shim-install add ca_string for SL Micro to update fallback loader (bsc#1254336)</li>
<li>Modified the pretrans Lua script to work around the broken DB issue caused by buggy firmware when Secure Boot is disabled. (bsc#1259096)</li>
<li>shim-install: Improve the detection of SL Micro (bsc#1269084)</li>
</ul>
<h2>Patch Instructions:</h2>
<p>
To install this SUSE update use the SUSE recommended
installation methods like YaST online_update or "zypper patch".<br/>
Alternatively you can run the command listed for your product:
</p>
<ul class="list-group">
<li class="list-group-item">
openSUSE Leap 15.3
<br/>
<code>zypper in -t patch SUSE-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server for SAP Applications 15 SP4
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
<br/>
<code>zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
<br/>
<code>zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Micro for Rancher 5.3
<br/>
<code>zypper in -t patch SUSE-SLE-Micro-5.3-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Micro 5.3
<br/>
<code>zypper in -t patch SUSE-SLE-Micro-5.3-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server for SAP Applications 15 SP5
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
<br/>
<code>zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
<br/>
<code>zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Micro for Rancher 5.4
<br/>
<code>zypper in -t patch SUSE-SLE-Micro-5.4-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Micro 5.4
<br/>
<code>zypper in -t patch SUSE-SLE-Micro-5.4-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server for SAP Applications 15 SP6
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Micro 5.5
<br/>
<code>zypper in -t patch SUSE-SLE-Micro-5.5-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server 15 SP4 LTSS
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-5112</code>
</li>
<li class="list-group-item">
Basesystem Module 15-SP7
<br/>
<code>zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server 15 SP5 LTSS
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-5112</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server 15 SP6 LTSS
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-5112</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
openSUSE Leap 15.3 (aarch64 x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server for SAP Applications 15 SP4 (x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro 5.3 (aarch64 x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server for SAP Applications 15 SP5 (x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro 5.4 (aarch64 x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server for SAP Applications 15 SP6 (x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro 5.5 (aarch64 x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
Basesystem Module 15-SP7 (aarch64 x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 x86_64)
<ul>
<li>shim-16.1-150300.4.42.1</li>
<li>shim-debuginfo-16.1-150300.4.42.1</li>
<li>shim-debugsource-16.1-150300.4.42.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1210382">https://bugzilla.suse.com/show_bug.cgi?id=1210382</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1254336">https://bugzilla.suse.com/show_bug.cgi?id=1254336</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1259096">https://bugzilla.suse.com/show_bug.cgi?id=1259096</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269084">https://bugzilla.suse.com/show_bug.cgi?id=1269084</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1270036">https://bugzilla.suse.com/show_bug.cgi?id=1270036</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1278729">https://bugzilla.suse.com/show_bug.cgi?id=1278729</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1285863">https://bugzilla.suse.com/show_bug.cgi?id=1285863</a>
</li>
<li>
<a href="https://jira.suse.com/browse/PED-13361">https://jira.suse.com/browse/PED-13361</a>
</li>
<li>
<a href="https://jira.suse.com/browse/PED-15978">https://jira.suse.com/browse/PED-15978</a>
</li>
</ul>
</div>