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OpenSUSE Critical Security Update for glibc CVE-2026-4046 High Severity

suse
Calendar Grey June 4, 2026
Scroller Suse
SUSE releases important glibc security update addressing multiple vulnerabilities with significant risks and attack vectors.
An update that solves three vulnerabilities can now be installed.

Summary

## This update for glibc fixes the following issues * CVE-2026-4046: assertion failure when converting inputs may be used to remotely crash an application (bsc#1261206). * CVE-2026-5450: stdio-common: scanf %mc pattern will cause heap overflow when width > 1024 (bsc#1262465). * CVE-2026-5928: libio: ungetwc could be used to leak data on special conditions (bsc#1262464). ## 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-2026-2231=1 * SUSE Linux Enterprise Server for SAP Applications 15 SP6 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-2231=1 * Basesystem Module 15-SP7

Topics%20covered

Topics Covered

security advisory vulnerability important glibc remote crash OpenSUSE

References

* bsc#1261206

* bsc#1262464

* bsc#1262465

Cross-

* CVE-2026-4046

* CVE-2026-5450

* CVE-2026-5928

CVSS scores:

* CVE-2026-4046 ( SUSE ): 8.7

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

* CVE-2026-4046 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-4046 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-5450 ( SUSE ): 5.1

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

* CVE-2026-5450 ( SUSE ): 5.9 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

* CVE-2026-5450 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-5928 ( SUSE ): 5.9

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

* CVE-2026-5928 ( SUSE ): 5.7 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2231-1
Release Date: 2026-06-03T10:57:32Z
Rating: important

Topics%20covered

Topics Covered

security advisory vulnerability important glibc remote crash OpenSUSE

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