SUSE alert SUSE-SU-2026:23300-1 (go1.25)

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SLE-SECURITY-UPDATES <null@suse.de>
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sle-security-updates@lists.suse.com
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SUSE-SU-2026:23300-1: important: Security update for go1.25
Date:
             
 
Mon, 31 Aug 2026 13:06:29 -0000
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<178818158929.531.10494416210676503973@f2d94a75072c>
# Security update for go1.25

Announcement ID: SUSE-SU-2026:23300-1  
Release Date: 2026-08-19T09:07:44Z  
Rating: important  
References:

  * bsc#1244485
  * bsc#1266609
  * bsc#1275024
  * bsc#1275025
  * bsc#1275026
  * bsc#1275028
  * bsc#1275029
  * bsc#1275032
  * bsc#1275033
  * bsc#1275034

  
Cross-References:

  * CVE-2026-33818
  * CVE-2026-39821
  * CVE-2026-56853
  * CVE-2026-56858
  * CVE-2026-56859
  * CVE-2026-56860
  * CVE-2026-56862
  * CVE-2026-56864
  * CVE-2026-56865

  
CVSS scores:

  * CVE-2026-33818 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-33818 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-39821 ( SUSE ):  9.1
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-39821 ( SUSE ):  7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-39821 ( NVD ):  8.2 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
  * CVE-2026-39821 ( NVD ):  9.6 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
  * CVE-2026-56853 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-56853 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-56858 ( SUSE ):  6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  * CVE-2026-56858 ( NVD ):  6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  * CVE-2026-56859 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-56859 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-56860 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-56860 ( NVD ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-56862 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-56862 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-56864 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
  * CVE-2026-56864 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-56865 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  * CVE-2026-56865 ( NVD ):  8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP applications 16.0

  
  
An update that solves nine vulnerabilities and has one fix can now be installed.

## Description:

This update for go1.25 fixes the following issues:

Update to go1.25.13 (released 2026-08-13, bsc#1244485).

Security issues fixed:

  * CVE-2026-33818: encoding/asn1: unenforced recursion limit can lead to stack
    exhaustion when parsing deeply-nested, recursive structures (bsc#1275034).
  * CVE-2026-39821: golang.org/x/net/idna: failure to reject ASCII-only
    Punycode-encoded labels allows for validation bypass and privilege
    escalation (bsc#1266609).
  * CVE-2026-56853: net/http: missing timeout when doing unencrypted HTTP/2
    check can lead to a denial of service (bsc#1275028).
  * CVE-2026-56858: html/template: improper Javascript regexp context tracking
    allows for XSS attacks (bsc#1275033).
  * CVE-2026-56859: encoding/xml: missing recursion depth guard during decode
    operation can lead to stack exhaustion and a denial of service
    (bsc#1275026).
  * CVE-2026-56860: net/url: quadratic time complexity in `resolvePath` when
    processing certain input can lead to high memory allocation overhead and a
    denial of service (bsc#1275029).
  * CVE-2026-56862: crypto/tls: no limit set for handshake messages sent post-
    handshake allows for denial of service (bsc#1275032).
  * CVE-2026-56864: x/mod/sumdb: unauthenticated hashes accepted in `Lookup`
    allows for a coordinating GOPROXY and GOSUMDB to serve a client malicious
    module content (bsc#1275025).
  * CVE-2026-56865: x/mod/sumdb/tlog: improper transparency log tile
    verification allows for bypass on crafted input and can lead to malicious
    module content to be accepted (bsc#1275024).

Changes for go1.25.13:

  * go#79875 cmd/compile: prove misscompilation in slicemask folding leaves
    garbage in upper bits
  * go#80098 cmd/compile: internal compiler error invalid heap allocated var
    without Heapaddr
  * go#80364 os: Root's MkdirAll can't create paths ending in forward slashes
  * go#80366 os: TestRootMultiReadFile fails on netbsd/arm64 after CL 797880
  * go#80368 os: TestRootConsistencyRemoveAll fails on Plan 9 after CL 797880
  * go#80393 runtime: arm64 found pointer to free object with safe code
  * go#80440 runtime: uninitialized register due to wrong ABI in
    mach_vm_region_trampoline leads to libc following garbage stack data as a
    pointer
  * go#80477 cmd/compile: riscv64 miscompiles struct copy, corrupting a []byte
    slice field
  * go#80500 runtime: js/wasm: "found bad pointer in Go heap" \-- link-layout-
    constant value recorded as a pointer in the write-barrier buffer
  * go#80578 cmd/compile: regalloc uses unreliable type data (like
    v.Type.IsSigned()) to choose the restore of spills
  * go#80605 crypto/tls: escape hatch for FIPS 140-3 mode Extended Master Secret
    enforcement
  * go#80614 cmd/compile: mips64le misscompile OffPtr by a const which doesn't
    fit 32bits resulting in panic
  * go#80616 cmd/compile: mips/mips64, multiply/divide results spilled from
    HI/LO corrupted w/ big stack frames
  * go#80618 cmd/compile: prove bug causes invalid indirect call
  * go#80737 runtime: fpTracebackPartialExpand SIGSEGV under high panic load

## 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:

  * SUSE Linux Enterprise Server 16.0  
    zypper in -t patch SUSE-SLES-16.0-1462=1

  * SUSE Linux Enterprise Server for SAP applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-1462=1

## Package List:

  * SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    * go1.25-race-1.25.13-160000.1.1
    * go1.25-doc-1.25.13-160000.1.1
    * go1.25-1.25.13-160000.1.1
  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    * go1.25-race-1.25.13-160000.1.1
    * go1.25-doc-1.25.13-160000.1.1
    * go1.25-1.25.13-160000.1.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-33818.html
  * https://www.suse.com/security/cve/CVE-2026-39821.html
  * https://www.suse.com/security/cve/CVE-2026-56853.html
  * https://www.suse.com/security/cve/CVE-2026-56858.html
  * https://www.suse.com/security/cve/CVE-2026-56859.html
  * https://www.suse.com/security/cve/CVE-2026-56860.html
  * https://www.suse.com/security/cve/CVE-2026-56862.html
  * https://www.suse.com/security/cve/CVE-2026-56864.html
  * https://www.suse.com/security/cve/CVE-2026-56865.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1244485
  * https://bugzilla.suse.com/show_bug.cgi?id=1266609
  * https://bugzilla.suse.com/show_bug.cgi?id=1275024
  * https://bugzilla.suse.com/show_bug.cgi?id=1275025
  * https://bugzilla.suse.com/show_bug.cgi?id=1275026
  * https://bugzilla.suse.com/show_bug.cgi?id=1275028
  * https://bugzilla.suse.com/show_bug.cgi?id=1275029
  * https://bugzilla.suse.com/show_bug.cgi?id=1275032
  * https://bugzilla.suse.com/show_bug.cgi?id=1275033
  * https://bugzilla.suse.com/show_bug.cgi?id=1275034



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