SUSE: Critical Kernel Update for 15 SP6 - CVE-2023-53676
suse
January 21, 2026
An update that solves three vulnerabilities can now be installed.
Summary
## This update for the SUSE Linux Enterprise kernel 6.4.0-150600.23.70 fixes various security issues The following security issues were fixed: * CVE-2023-53676: scsi: target: iscsi: Fix buffer overflow in lio_target_nacl_info_show() (bsc#1251787). * CVE-2025-39682: tls: fix handling of zero-length records on the rx_list (bsc#1250192). * CVE-2025-40204: sctp: Fix MAC comparison to be constant-time (bsc#1253437). ## 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-2026-203=1 * SUSE Linux Enterprise Live Patching 15-SP6 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2026-203=1 ## Package List:
Topics Covered
References
* bsc#1250192
* bsc#1251787
* bsc#1253437
Cross-
* CVE-2023-53676
* CVE-2025-39682
* CVE-2025-40204
CVSS scores:
* CVE-2023-53676 ( 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
* CVE-2023-53676 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
* CVE-2025-39682 ( SUSE ): 7.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
* CVE-2025-40204 ( SUSE ): 8.7
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
* CVE-2025-40204 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products:
* openSUSE Leap 15.6
* SUSE Linux Enterprise Live Patching 15-SP6
* SUSE Linux Enterprise Real Time 15 SP6
* SUSE Linux Enterprise Server 15 SP6
* SUSE Linux Enterprise Server for SAP Applications 15 SP6
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Severity
important
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Critical
Announcement ID: SUSE-SU-2026:0203-1
Release Date: 2026-01-21T13:04:03Z
Rating: important
Topics Covered
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