SUSE alert openSUSE-SU-2026:21968-1 (glibc)

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openSUSE-SU-2026:21968-1: important: Security update for glibc
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Thu, 01 Oct 2026 17:53:09 +0200
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<20261001155309.BB09DFD21@maintenance.suse.de>
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Article
openSUSE security update: security update for glibc
-------------------------------------------------------------

Announcement ID: openSUSE-SU-2026:21968-1
Rating: important
References:

  * bsc#1274723
  * bsc#1274726
  * bsc#1276892
  * bsc#1276946
  * bsc#1277247
  * bsc#1277262
  * bsc#1277921
  * bsc#1277922
  * bsc#1281297
  * bsc#1282509



Cross-References:

  * CVE-2026-18374
  * CVE-2026-19499
  * CVE-2026-19542
  * CVE-2026-6368
  * CVE-2026-6791
  * CVE-2026-77117
  * CVE-2026-80489
  * CVE-2026-8674
  * CVE-2026-86805



CVSS scores:

  * CVE-2026-18374 ( SUSE ): 4.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2026-18374 ( SUSE ): 2.1 CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-19499 ( SUSE ): 6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:H
  * CVE-2026-19499 ( SUSE ): 4.4 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-19542 ( SUSE ): 4.2 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:L
  * CVE-2026-19542 ( SUSE ): 1 CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-6368 ( SUSE ): 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
  * CVE-2026-6791 ( SUSE ): 6.6 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
  * CVE-2026-77117 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-77117 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-80489 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-80489 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-8674 ( SUSE ): 5.3 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-8674 ( SUSE ): 6 CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-86805 ( SUSE ): 7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-86805 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected Products:

         openSUSE Leap 16.0

-------------------------------------------------------------

An update that solves 9 vulnerabilities and has 10 bug fixes can now be installed.

Description:

This update for glibc fixes the following issues:

- CVE-2026-6368: invalid free via wordexp WRDE_APPEND rollback (bsc#1274726).
- CVE-2026-6791: stack overflow in wordexp tilde expansion (bsc#1274723).
- CVE-2026-8674: reachable assert in `resolv/resolv_conf.c:update_from_conf` allows an attacker in
a local network to
  trigger a process crash (bsc#1281297).
- CVE-2026-18374: heap buffer overflow in the fopen ccs extension (bsc#1277262).
- CVE-2026-19499: buffer overflow in strfmon right-justification padding (bsc#1276892).
- CVE-2026-19542: out-of-bounds array write in tdelete (bsc#1276946).
- CVE-2026-77117: SHIFT_JISX0213 decoding lacks pending character reset (bsc#1277921).
- CVE-2026-80489: EUC_JISX0213 decoding lacks pending character reset (bsc#1277922).
- CVE-2026-86805: TOCTOU race condition in the dynamic loader allows local attackers to escalate
privileges
  (bsc#1282509).

Other changes:

- Add -flive-patching=inline-clone to avoid untraceable inter-procedural optimizations
(bsc#1277247).


Patch instructions:

   To install this openSUSE security 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 16.0

   zypper in -t patch openSUSE-Leap-16.0-1769=1

Package List:

- openSUSE Leap 16.0:

  cross-aarch64-glibc-devel-2.40-160000.7.1
  cross-ppc64le-glibc-devel-2.40-160000.7.1
  cross-riscv64-glibc-devel-2.40-160000.7.1
  cross-s390x-glibc-devel-2.40-160000.7.1
  glibc-2.40-160000.7.1
  glibc-devel-2.40-160000.7.1
  glibc-devel-static-2.40-160000.7.1
  glibc-extra-2.40-160000.7.1
  glibc-gconv-modules-extra-2.40-160000.7.1
  glibc-html-2.40-160000.7.1
  glibc-i18ndata-2.40-160000.7.1
  glibc-info-2.40-160000.7.1
  glibc-lang-2.40-160000.7.1
  glibc-locale-2.40-160000.7.1
  glibc-locale-base-2.40-160000.7.1
  glibc-profile-2.40-160000.7.1
  glibc-utils-2.40-160000.7.1

References:

  * https://www.suse.com/security/cve/CVE-2026-18374.html
  * https://www.suse.com/security/cve/CVE-2026-19499.html
  * https://www.suse.com/security/cve/CVE-2026-19542.html
  * https://www.suse.com/security/cve/CVE-2026-6368.html
  * https://www.suse.com/security/cve/CVE-2026-6791.html
  * https://www.suse.com/security/cve/CVE-2026-77117.html
  * https://www.suse.com/security/cve/CVE-2026-80489.html
  * https://www.suse.com/security/cve/CVE-2026-8674.html
  * https://www.suse.com/security/cve/CVE-2026-86805.html