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Vulnerability IntelligenceSUSE-SU-2026:20999-1

SUSE-SU-2026:20999-1

MEDIUM6.5

Security update for glibc

Published Apr 10, 2026

Modified 4 weeks ago

Fix available

Details

Description of the patch:

This update for glibc fixes the following issues:

Security fixes:

CVE-2026-4437: incorrect DNS response parsing via crafted DNS server response (bsc#1260078).
CVE-2026-4438: invalid DNS hostname returned via gethostbyaddr functions (bsc#1260082).

Other fixes:

nss: Missing checks in __nss_configure_lookup, __nss_database_get (bsc#1258319).

Affected Packages

glibc-gconv-modules-extra

SUSE Linux Micro Extras 6.2

Fixed in:

0:2.40-160000.4.1

References

https://bugzilla.suse.com/1258319

https://bugzilla.suse.com/1260078

https://bugzilla.suse.com/1260082

https://lists.suse.com/pipermail/sle-updates/2026-April/045407.html

https://www.suse.com/security/cve/CVE-2026-4437/

https://www.suse.com/security/cve/CVE-2026-4438/

https://www.suse.com/support/security/rating/

https://www.suse.com/support/update/announcement/2026/suse-su-202620999-1/

CVSS Analysis

CVSS v3.1

6.5

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

NoneC:N

Integrity

LowI:L

Availability

LowA:L

6.5/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Upstream

CVE-2026-4437 CVE-2026-4438

Ecosystems

SUSE Linux Micro Extras 6.2

Timeline

PublishedApr 10, 2026

ModifiedSep 23, 2026

SUSE-SU-2026:20999-1 | Mondoo Vulnerability Intelligence