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SUSE glibc Moderate Buffer Overflow Crash Fix 2026-22453-1

suse
Calendar Grey July 3, 2026
Dist Suse Esm H88
Upgrade glibc on SUSE Linux Micro 6.1 to mitigate moderate vulnerabilities affecting system stability and security.
An update that solves two vulnerabilities can now be installed.

Summary

## 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). ## 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 Micro 6.1 zypper in -t patch SUSE-SLE-Micro-6.1-601=1 ## Package List: * SUSE Linux Micro 6.1 (aarch64 ppc64le s390x x86_64) * glibc-locale-base-2.38-slfo.1.1_9.1 * glibc-devel-2.38-slfo.1.1_9.1 * glibc-2.38-slfo.1.1_9.1 * glibc-debuginfo-2.38-slfo.1.1_9.1

Topics%20covered

Topics Covered

security advisory moderate buffer overflow SuSE glibc application crash

References

* bsc#1263656

* bsc#1263658

Cross-

* CVE-2026-5435

* CVE-2026-6238

CVSS scores:

* CVE-2026-5435 ( SUSE ): 4.8

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

* CVE-2026-5435 ( SUSE ): 5.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

* CVE-2026-5435 ( NVD ): 7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

* CVE-2026-6238 ( SUSE ): 4.8

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

* CVE-2026-6238 ( SUSE ): 5.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

* CVE-2026-6238 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Affected Products:

* SUSE Linux Micro 6.1

An update that solves two vulnerabilities can now be installed.

##

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

Severity
moderate
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:22453-1
Release Date: 2026-06-30T09:54:13Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate buffer overflow SuSE glibc application crash

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