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openSUSE Nginx Major Heap Buffer Overflow Vulnerability CVE-2026-9256

opensuse
Calendar Grey June 9, 2026
Dist Opensuse Esm H88
Important security update for nginx addresses a heap buffer overflow in openSUSE and related distributions. Install promptly.
An update that solves one vulnerability can now be installed.

Description

This update for nginx fixes the following issue

* CVE-2026-9256: heap buffer overflow in the `ngx_http_rewrite_module` when

using a configuration with overlapping captures (bsc#1266215).

Topics%20covered

Topics Covered

security advisory important threat mitigation nginx OpenSUSE heap buffer overflow

Patch

## 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:

* openSUSE Leap 15.6

zypper in -t patch SUSE-2026-2307=1

* Server Applications Module 15-SP7

zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-2307=1

* SUSE Linux Enterprise Server 15 SP6 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-2307=1

* SUSE Linux Enterprise Server for SAP Applications 15 SP6

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-2307=1

Package List

* openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)

* nginx-1.21.5-150600.10.21.1

* nginx-debugsource-1.21.5-150600.10.21.1

* nginx-debuginfo-1.21.5-150600.10.21.1

* openSUSE Leap 15.6 (noarch)

* nginx-source-1.21.5-150600.10.21.1

* Server Applications Module 15-SP7 (aarch64 ppc64le s390x x86_64)

* nginx-1.21.5-150600.10.21.1

* nginx-debugsource-1.21.5-150600.10.21.1

* nginx-debuginfo-1.21.5-150600.10.21.1

* Server Applications Module 15-SP7 (noarch)

* nginx-source-1.21.5-150600.10.21.1

* SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)

* nginx-1.21.5-150600.10.21.1

* nginx-debugsource-1.21.5-150600.10.21.1

* nginx-debuginfo-1.21.5-150600.10.21.1

* SUSE Linux Enterprise Server 15 SP6 LTSS (noarch)

* nginx-source-1.21.5-150600.10.21.1

* SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)

* nginx-1.21.5-150600.10.21.1

* nginx-debugsource-1.21.5-150600.10.21.1

* nginx-debuginfo-1.21.5-150600.10.21.1

* SUSE Linux Enterprise Server for SAP Applications 15 SP6...

Read the Full Advisory

References

* bsc#1266215

## References:

* https://www.suse.com/security/cve/CVE-2026-9256.html

* https://bugzilla.suse.com/show_bug.cgi?id=1266215

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2307-1
Release Date: 2026-06-09T08:12:26Z
Affected Products: * openSUSE Leap 15.6 * Server Applications Module 15-SP7 * SUSE Linux Enterprise Real Time 15 SP7 * SUSE Linux Enterprise Server 15 SP6 * SUSE Linux Enterprise Server 15 SP6 LTSS * SUSE Linux Enterprise Server 15 SP7 * SUSE Linux Enterprise Server for SAP Applications 15 SP6 * SUSE Linux Enterprise Server for SAP Applications 15 SP7

Topics%20covered

Topics Covered

security advisory important threat mitigation nginx OpenSUSE heap buffer overflow

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