<div class="container">
<h1>Security update for the Linux Kernel (Live Patch 56 for SUSE Linux Enterprise 15 SP4)</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:4974-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-11-01T06:34:34Z</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=1269766">bsc#1269766</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1271837">bsc#1271837</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1274712">bsc#1274712</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1277399">bsc#1277399</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1280285">bsc#1280285</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1280693">bsc#1280693</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1280728">bsc#1280728</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1285686">bsc#1285686</a>
</li>
</ul>
</td>
</tr>
<tr>
<th>
Cross-References:
</th>
<td>
<ul>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-53016.html">CVE-2026-53016</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-53381.html">CVE-2026-53381</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-68426.html">CVE-2026-68426</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-74469.html">CVE-2026-74469</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-74669.html">CVE-2026-74669</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-89551.html">CVE-2026-89551</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-89674.html">CVE-2026-89674</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-98432.html">CVE-2026-98432</a>
</li>
</ul>
</td>
</tr>
<tr>
<th>CVSS scores:</th>
<td>
<ul class="list-group">
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-53016</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.3</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-53016</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.8</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-53016</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.0</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-53381</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.5</span>
<span class="cvss-vector">CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-53381</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.8</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-53381</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.8</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-68426</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.0</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-68426</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">9.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-74469</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.5</span>
<span class="cvss-vector">CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-74469</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.8</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-74469</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">8.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-74669</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.0</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-74669</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">9.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-89551</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.7</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-89551</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-89551</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">9.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-89674</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-89674</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">9.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-98432</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">9.2</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-98432</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">8.1</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-98432</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">9.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H</span>
</li>
</ul>
</td>
</tr>
<tr>
<th>Affected Products:</th>
<td>
<ul class="list-group">
<li class="list-group-item">openSUSE Leap 15.4</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise Live Patching 15-SP4</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 Real Time 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 15 SP4</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>An update that solves eight vulnerabilities can now be installed.</p>
<h2>Description:</h2>
<p>This update for the SUSE Linux Enterprise Kernel 5.14.21-150400.24.225 fixes various security issues:</p>
<p>The following security issues were fixed:</p>
<ul>
<li>CVE-2026-53016: crypto: ccp - copy IV using skcipher ivsize (bsc#1269766).</li>
<li>CVE-2026-53381: virtiofs: fix UAF on submount umount (bsc#1271837).</li>
<li>CVE-2026-68426: xfrm: fix stale skb->prev after async crypto steals a GSO segment (bsc#1274712).</li>
<li>CVE-2026-74469: sctp: prevent peer transport count overflow (bsc#1280693).</li>
<li>CVE-2026-74669: ipvs: clear IPv4 options after rebasing tunnel ICMP errors (bsc#1277399).</li>
<li>CVE-2026-89551: SUNRPC: xdr_buf_trim: clamp buf->len to avoid underflow (bsc#1280728).</li>
<li>CVE-2026-89674: nfsd: fix XDR length calculation in nfsd4_ff_encode_layoutget (bsc#1280285).</li>
<li>CVE-2026-98432: ipv4: free inet_opt and ireq_opt after an RCU grace period (bsc#1285686).</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">
SUSE Linux Enterprise Live Patching 15-SP4
<br/>
<code>zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2026-4973 SUSE-SLE-Module-Live-Patching-15-SP4-2026-4976 SUSE-SLE-Module-Live-Patching-15-SP4-2026-4975 SUSE-SLE-Module-Live-Patching-15-SP4-2026-4974</code>
</li>
<li class="list-group-item">
openSUSE Leap 15.4
<br/>
<code>zypper in -t patch SUSE-2026-4976 SUSE-2026-4975 SUSE-2026-4974 SUSE-2026-4973</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
<ul>
<li>kernel-livepatch-5_14_21-150400_24_205-default-11-150400.2.1</li>
<li>kernel-livepatch-SLE15-SP4_Update_51-debugsource-11-150400.2.1</li>
<li>kernel-livepatch-5_14_21-150400_24_197-default-debuginfo-12-150400.2.1</li>
<li>kernel-livepatch-5_14_21-150400_24_214-default-9-150400.2.1</li>
<li>kernel-livepatch-5_14_21-150400_24_225-default-debuginfo-8-150400.2.1</li>
<li>kernel-livepatch-SLE15-SP4_Update_53-debugsource-9-150400.2.1</li>
<li>kernel-livepatch-5_14_21-150400_24_197-default-12-150400.2.1</li>
<li>kernel-livepatch-5_14_21-150400_24_225-default-8-150400.2.1</li>
<li>kernel-livepatch-5_14_21-150400_24_205-default-debuginfo-11-150400.2.1</li>
<li>kernel-livepatch-SLE15-SP4_Update_56-debugsource-8-150400.2.1</li>
<li>kernel-livepatch-5_14_21-150400_24_214-default-debuginfo-9-150400.2.1</li>
<li>kernel-livepatch-SLE15-SP4_Update_49-debugsource-12-150400.2.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.4 (ppc64le s390x x86_64)
<ul>
<li>kernel-livepatch-5_14_21-150400_24_205-default-11-150400.2.1</li>
<li>kernel-livepatch-SLE15-SP4_Update_51-debugsource-11-150400.2.1</li>
<li>kernel-livepatch-5_14_21-150400_24_197-default-debuginfo-12-150400.2.1</li>
<li>kernel-livepatch-5_14_21-150400_24_214-default-9-150400.2.1</li>
<li>kernel-livepatch-5_14_21-150400_24_225-default-debuginfo-8-150400.2.1</li>
<li>kernel-livepatch-SLE15-SP4_Update_53-debugsource-9-150400.2.1</li>
<li>kernel-livepatch-5_14_21-150400_24_197-default-12-150400.2.1</li>
<li>kernel-livepatch-5_14_21-150400_24_225-default-8-150400.2.1</li>
<li>kernel-livepatch-5_14_21-150400_24_205-default-debuginfo-11-150400.2.1</li>
<li>kernel-livepatch-SLE15-SP4_Update_56-debugsource-8-150400.2.1</li>
<li>kernel-livepatch-5_14_21-150400_24_214-default-debuginfo-9-150400.2.1</li>
<li>kernel-livepatch-SLE15-SP4_Update_49-debugsource-12-150400.2.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-53016.html">https://www.suse.com/security/cve/CVE-2026-53016.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-53381.html">https://www.suse.com/security/cve/CVE-2026-53381.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-68426.html">https://www.suse.com/security/cve/CVE-2026-68426.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-74469.html">https://www.suse.com/security/cve/CVE-2026-74469.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-74669.html">https://www.suse.com/security/cve/CVE-2026-74669.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-89551.html">https://www.suse.com/security/cve/CVE-2026-89551.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-89674.html">https://www.suse.com/security/cve/CVE-2026-89674.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-98432.html">https://www.suse.com/security/cve/CVE-2026-98432.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1269766">https://bugzilla.suse.com/show_bug.cgi?id=1269766</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1271837">https://bugzilla.suse.com/show_bug.cgi?id=1271837</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1274712">https://bugzilla.suse.com/show_bug.cgi?id=1274712</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1277399">https://bugzilla.suse.com/show_bug.cgi?id=1277399</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1280285">https://bugzilla.suse.com/show_bug.cgi?id=1280285</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1280693">https://bugzilla.suse.com/show_bug.cgi?id=1280693</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1280728">https://bugzilla.suse.com/show_bug.cgi?id=1280728</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1285686">https://bugzilla.suse.com/show_bug.cgi?id=1285686</a>
</li>
</ul>
</div>