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openSUSE glibc Moderate Buffer Overflow Issues 2026-3030-1

opensuse
Calendar Grey July 15, 2026
Dist Opensuse Esm H88
A moderate security update for openSUSE addressing two glibc vulnerabilities that can lead to application crashes or memory disclosure.
An update that solves two vulnerabilities can now be installed.

Description

This update for glibc fixes the following issues

* CVE-2026-5435: unchecked buffer writing in TSIG handling can lead to an out-

of-bounds write (bsc#1263656).

* CVE-2026-6238: insufficient RDATA length validation can lead to application

crashes or uninitialized memory disclosure (bsc#1263658).

Topics%20covered

Topics Covered

security advisory moderate buffer overflow glibc application crash OpenSUSE

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:

* Basesystem Module 15-SP7

zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-3030=1

* SUSE Linux Enterprise Server 15 SP6 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-3030=1

* openSUSE Leap 15.6

zypper in -t patch SUSE-2026-3030=1

* Development Tools Module 15-SP7

zypper in -t patch SUSE-SLE-Module-Development-Tools-15-SP7-2026-3030=1

* SUSE Linux Enterprise Server for SAP Applications 15 SP6

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-3030=1

Package List

* SUSE Linux Enterprise Server 15 SP6 LTSS (x86_64)

* libnsl1-32bit-2.38-150600.14.52.1

* glibc-32bit-2.38-150600.14.52.1

* glibc-locale-base-32bit-2.38-150600.14.52.1

* libnsl1-32bit-debuginfo-2.38-150600.14.52.1

* glibc-32bit-debuginfo-2.38-150600.14.52.1

* glibc-devel-32bit-debuginfo-2.38-150600.14.52.1

* glibc-devel-32bit-2.38-150600.14.52.1

* glibc-locale-base-32bit-debuginfo-2.38-150600.14.52.1

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

* glibc-extra-2.38-150600.14.52.1

* glibc-locale-base-debuginfo-2.38-150600.14.52.1

* glibc-utils-2.38-150600.14.52.1

* libnsl1-2.38-150600.14.52.1

* glibc-extra-debuginfo-2.38-150600.14.52.1

* nscd-2.38-150600.14.52.1

* glibc-devel-debuginfo-2.38-150600.14.52.1

* glibc-debugsource-2.38-150600.14.52.1

* glibc-2.38-150600.14.52.1

* glibc-devel-static-2.38-150600.14.52.1

* glibc-locale-base-2.38-150600.14.52.1

* glibc-devel-2.38-150600.14.52.1

* glibc-profile-2.38-150600.14.52.1

* glibc-locale-2.38-150600.14.52.1

*...

Read the Full Advisory

References

* bsc#1263656

* bsc#1263658

## References:

* https://www.suse.com/security/cve/CVE-2026-5435.html

* https://www.suse.com/security/cve/CVE-2026-6238.html

* https://bugzilla.suse.com/show_bug.cgi?id=1263656

* https://bugzilla.suse.com/show_bug.cgi?id=1263658

Severity
moderate
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:3030-1
Release Date: 2026-07-15T09:53:19Z
Affected Products: * Basesystem Module 15-SP7 * Development Tools Module 15-SP7 * openSUSE Leap 15.6 * SUSE Linux Enterprise Desktop 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 moderate buffer overflow glibc application crash OpenSUSE

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