<div class="container">
<h1>Security update for go1.26</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:0876-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-03-11T18:35:52Z</td>
</tr>
<tr>
<th>Rating:</th>
<td>moderate</td>
</tr>
<tr>
<th>References:</th>
<td>
<ul>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1255111">bsc#1255111</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1259264">bsc#1259264</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1259265">bsc#1259265</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1259266">bsc#1259266</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1259267">bsc#1259267</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1259268">bsc#1259268</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-2026-25679.html">CVE-2026-25679</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-27137.html">CVE-2026-27137</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-27138.html">CVE-2026-27138</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-27139.html">CVE-2026-27139</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-27142.html">CVE-2026-27142</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-2026-25679</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">4.6</span>
<span class="cvss-vector">CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-25679</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">3.3</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-25679</span>
<span class="cvss-source">
(
NVD
):
</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-2026-27137</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.9</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27137</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27137</span>
<span class="cvss-source">
(
NVD
):
</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-2026-27138</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-2026-27138</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-2026-27138</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">5.9</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27139</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">4.8</span>
<span class="cvss-vector">CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27139</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">3.3</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27139</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">2.5</span>
<span class="cvss-vector">CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27142</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">5.1</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27142</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">5.4</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27142</span>
<span class="cvss-source">
(
NVD
):
</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>
</ul>
</td>
</tr>
<tr>
<th>Affected Products:</th>
<td>
<ul class="list-group">
<li class="list-group-item">Development Tools Module 15-SP7</li>
<li class="list-group-item">openSUSE Leap 15.6</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 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 solves five vulnerabilities and has one security fix can now be installed.</p>
<h2>Description:</h2>
<p>This update for go1.26 fixes the following issues:</p>
<p>Update to go1.26.1 (bsc#1255111):</p>
<ul>
<li>CVE-2026-25679: net/url: reject IPv6 literal not at start of host (bsc#1259264).</li>
<li>CVE-2026-27137: crypto/x509: incorrect enforcement of email constraints (bsc#1259266).</li>
<li>CVE-2026-27138: crypto/x509: panic in name constraint checking for malformed certificates (bsc#1259267).</li>
<li>CVE-2026-27139: os: FileInfo can escape from a Root (bsc#1259268).</li>
<li>CVE-2026-27142: html/template: URLs in meta content attribute actions are not escaped (bsc#1259265).</li>
</ul>
<p>Changelog:</p>
<ul>
<li>go#77252 cmd/compile: miscompile of global array initialization</li>
<li>go#77407 os: Go 1.25.x regression on RemoveAll for windows</li>
<li>go#77474 cmd/go: CGO compilation fails after upgrading from Go 1.25.5 to 1.25.6 due to --define-variable flag in
pkg-config</li>
<li>go#77529 cmd/fix, x/tools/go/analysis/passes/modernize: stringscut: OOB panic in indexArgValid analyzing
"buf.Bytes()" call</li>
<li>go#77532 net/smtp: expiry date of localhostCert for testing is too short</li>
<li>go#77536 cmd/compile: internal compiler error: 'main.func1': not lowered: v15, Load STRUCT PTR SSA</li>
<li>go#77618 strings: HasSuffix doesn't work correctly for multibyte runes in go 1.26</li>
<li>go#77623 cmd/compile: internal compiler error on : "tried to free an already free register" with generic function
and type >= 192 bytes</li>
<li>go#77624 cmd/fix, x/tools/go/analysis/passes/modernize: stringsbuilder breaks code when combining two
strings.Builders</li>
<li>go#77680 cmd/link: TestFlagW/-w_-linkmode=external fails on illumos</li>
<li>go#77766 cmd/fix,x/tools/go/analysis/passes/modernize: rangeint uses target platform's type in the range expression,
breaking other platforms</li>
<li>go#77780 reflect: breaking change for reflect.Value.Interface behaviour</li>
<li>go#77786 cmd/compile: rewriteFixedLoad does not properly sign extend AuxInt</li>
<li>go#77803 cmd/fix,x/tools/go/analysis/passes/modernize: reflect.TypeOf(nil) transformed into
reflect.TypeFor<a href="">untyped nil</a></li>
<li>go#77804 cmd/fix,x/tools/go/analysis/passes/modernize: minmax breaks select statements</li>
<li>go#77805 cmd/fix, x/tools/go/analysis/passes/modernize: waitgroup leads to a compilation error</li>
<li>go#77807 cmd/fix,x/tools/go/analysis/passes/modernize: stringsbuilder ignores variables if they are used multiple
times</li>
<li>go#77849 cmd/fix,x/tools/go/analysis/passes/modernize: stringscut rewrite changes behavior</li>
<li>go#77860 cmd/go: change go mod init default go directive back to 1.N</li>
<li>go#77899 cmd/fix, x/tools/go/analysis/passes/modernize: bad rangeint rewriting</li>
<li>go#77904 x/tools/go/analysis/passes/modernize: stringsbuilder breaks code when GenDecl is a block declaration</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">
Development Tools Module 15-SP7
<br/>
<code>zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP7-2026-876=1</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-2026-876=1</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-2026-876=1</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-2026-876=1</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-2026-876=1</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-2026-876=1</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-2026-876=1</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-2026-876=1</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-SP4-2026-876=1</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-SP5-2026-876=1</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-SP6-2026-876=1</code>
</li>
<li class="list-group-item">
openSUSE Leap 15.6
<br/>
<code>zypper in -t patch openSUSE-SLE-15.6-2026-876=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
Development Tools Module 15-SP7 (aarch64 ppc64le s390x x86_64)
<ul>
<li>go1.26-race-1.26.1-150000.1.6.1</li>
<li>go1.26-doc-1.26.1-150000.1.6.1</li>
<li>go1.26-1.26.1-150000.1.6.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64)
<ul>
<li>go1.26-race-1.26.1-150000.1.6.1</li>
<li>go1.26-doc-1.26.1-150000.1.6.1</li>
<li>go1.26-1.26.1-150000.1.6.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64)
<ul>
<li>go1.26-race-1.26.1-150000.1.6.1</li>
<li>go1.26-doc-1.26.1-150000.1.6.1</li>
<li>go1.26-1.26.1-150000.1.6.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64)
<ul>
<li>go1.26-race-1.26.1-150000.1.6.1</li>
<li>go1.26-doc-1.26.1-150000.1.6.1</li>
<li>go1.26-1.26.1-150000.1.6.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64)
<ul>
<li>go1.26-race-1.26.1-150000.1.6.1</li>
<li>go1.26-doc-1.26.1-150000.1.6.1</li>
<li>go1.26-1.26.1-150000.1.6.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
<ul>
<li>go1.26-race-1.26.1-150000.1.6.1</li>
<li>go1.26-doc-1.26.1-150000.1.6.1</li>
<li>go1.26-1.26.1-150000.1.6.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
<ul>
<li>go1.26-race-1.26.1-150000.1.6.1</li>
<li>go1.26-doc-1.26.1-150000.1.6.1</li>
<li>go1.26-1.26.1-150000.1.6.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
<ul>
<li>go1.26-race-1.26.1-150000.1.6.1</li>
<li>go1.26-doc-1.26.1-150000.1.6.1</li>
<li>go1.26-1.26.1-150000.1.6.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
<ul>
<li>go1.26-race-1.26.1-150000.1.6.1</li>
<li>go1.26-doc-1.26.1-150000.1.6.1</li>
<li>go1.26-1.26.1-150000.1.6.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
<ul>
<li>go1.26-race-1.26.1-150000.1.6.1</li>
<li>go1.26-doc-1.26.1-150000.1.6.1</li>
<li>go1.26-1.26.1-150000.1.6.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
<ul>
<li>go1.26-race-1.26.1-150000.1.6.1</li>
<li>go1.26-doc-1.26.1-150000.1.6.1</li>
<li>go1.26-1.26.1-150000.1.6.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
<ul>
<li>go1.26-race-1.26.1-150000.1.6.1</li>
<li>go1.26-doc-1.26.1-150000.1.6.1</li>
<li>go1.26-1.26.1-150000.1.6.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-25679.html">https://www.suse.com/security/cve/CVE-2026-25679.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-27137.html">https://www.suse.com/security/cve/CVE-2026-27137.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-27138.html">https://www.suse.com/security/cve/CVE-2026-27138.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-27139.html">https://www.suse.com/security/cve/CVE-2026-27139.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-27142.html">https://www.suse.com/security/cve/CVE-2026-27142.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1255111">https://bugzilla.suse.com/show_bug.cgi?id=1255111</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1259264">https://bugzilla.suse.com/show_bug.cgi?id=1259264</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1259265">https://bugzilla.suse.com/show_bug.cgi?id=1259265</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1259266">https://bugzilla.suse.com/show_bug.cgi?id=1259266</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1259267">https://bugzilla.suse.com/show_bug.cgi?id=1259267</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1259268">https://bugzilla.suse.com/show_bug.cgi?id=1259268</a>
</li>
</ul>
</div>