Integer overflow in Go programming language - CVE-2026-27143

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Main Vulnerability Database Vulnerabilities #VU140603

Integer overflow in Go programming language - CVE-2026-27143

Published: July 31, 2026


Vulnerability identifier: #VU140603
CSH Severity: Low
CVSS v4 BT: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2026-27143
CWE-ID: CWE-190
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to cause memory corruption.

The vulnerability exists due to integer overflow in cmd/compile when optimizing arithmetic over induction variables in loops. A local user can compile specially crafted code to cause memory corruption.

The issue can result in invalid indexing at runtime.


Affected software

Go programming language
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
Anolis OS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Development Tools Module
openEuler
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
golang
golang-devel
golang-help
delve
golang (Red Hat package)
golang-src
golang-misc
golang-docs
golang-race
golang-bin
go-toolset
golang-tests
go1.25-openssl-debuginfo
go1.25-openssl-race
go1.25-openssl
go1.25-openssl-doc
go1.25
go1.25-race
go1.25-doc
go1.26-openssl
go1.26-openssl-race
go1.26-openssl-doc
go1.26-doc
go1.26
go1.26-race
Red Hat OpenShift Container Platform

How to mitigate CVE-2026-27143

Install security update from vendor's website.

Go programming language - addressed in versions 1.25.9, 1.26.2
golang - addressed in versions 1.21.4-44, 1.21.4-45, 1.21.4-48
golang-devel - addressed in versions 1.21.4-44, 1.21.4-45, 1.21.4-48
golang-help - addressed in versions 1.21.4-44, 1.21.4-45, 1.21.4-48
delve - update to 1.25.2-1.0.2
golang (Red Hat package) - addressed in versions 1.25.9-1.el9_2, 1.25.9-1.el9_6, 1.25.9-1.el10_0, 1.25.9-3.el10_1
golang-src - update to 1.25.9-1.0.1
golang-misc - update to 1.25.9-1.0.1
golang-docs - update to 1.25.9-1.0.1
golang-race - update to 1.25.9-1.0.1
golang-bin - update to 1.25.9-1.0.1
golang - update to 1.25.9-1.0.1
go-toolset - update to 1.25.9-1.0.1
golang-tests - update to 1.25.9-1.0.1
go1.25-openssl-debuginfo - update to 1.25.9-150000.1.21.1
go1.25-openssl-race - update to 1.25.9-150000.1.21.1
go1.25-openssl - update to 1.25.9-150000.1.21.1
go1.25-openssl-doc - update to 1.25.9-150000.1.21.1
go1.25 - update to 1.25.9-150000.1.35.1
go1.25-race - update to 1.25.9-150000.1.35.1
go1.25-doc - update to 1.25.9-150000.1.35.1
go1.26-openssl - update to 1.26.2-150000.1.6.1
go1.26-openssl-race - update to 1.26.2-150000.1.6.1
go1.26-openssl-doc - update to 1.26.2-150000.1.6.1
go1.26-doc - update to 1.26.2-150000.1.9.1
go1.26 - update to 1.26.2-150000.1.9.1
go1.26-race - update to 1.26.2-150000.1.9.1
Red Hat OpenShift Container Platform - update to 4.17.55

External References

Related Security Bulletins