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SUSE glibc Important Buffer Overflow Vulnerability Fix 2026-20178-1

suse
Calendar Grey February 2, 2026
Dist Suse Esm H88
Four critical fixes for glibc vulnerabilities in SUSE. Update recommended to prevent potential threats.
An update that solves four vulnerabilities and has one fix can now be installed.

Summary

## This update for glibc fixes the following issues: Security fixes: * CVE-2025-0395: Fixed buffer overflow in the assert() function (bsc#1236282). * CVE-2026-0861: Fixed inadequate size check in the memalign suite may result in an integer overflow (bsc#1256766). * CVE-2026-0915: Fixed uninitialized stack buffer used as DNS query name when net==0 in _nss_dns_getnetbyaddr_r (bsc#1256822). * CVE-2025-15281: Fixed uninitialized memory may cause the process abort (bsc#1257005). Other fixes: * NPTL: Optimize trylock for high cache contention workloads (bsc#1256436) ## 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 6.2

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow SuSE important glibc

References

* bsc#1236282

* bsc#1256436

* bsc#1256766

* bsc#1256822

* bsc#1257005

Cross-

* CVE-2025-0395

* CVE-2025-15281

* CVE-2026-0861

* CVE-2026-0915

CVSS scores:

* CVE-2025-0395 ( SUSE ): 2.0

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

* CVE-2025-0395 ( SUSE ): 3.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

* CVE-2025-0395 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2025-15281 ( SUSE ): 6.8

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

* CVE-2025-15281 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

* CVE-2025-15281 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-0861 ( SUSE ): 8.5

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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:20178-1
Release Date: 2026-01-29T16:16:14Z
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow SuSE important glibc

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