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SUSE Kernel Important Patch for Two Security Issues 2026-2553-1

suse
Calendar Grey June 23, 2026
Dist Suse Esm H88
Critical kernel security update for SUSE addresses two important vulnerabilities and provides necessary patch instructions.
An update that solves two vulnerabilities can now be installed.

Summary

## This update for the SUSE Linux Enterprise Kernel 6.4.0-150600.23.112 fixes various security issues The following security issues were fixed: * CVE-2026-43503: final dirty.frag related fixes (bsc#1266229). * CVE-2026-46323: net: gro: don't merge zcopy skbs (bsc#1268282). ## 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 Enterprise Live Patching 15-SP6 zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP6-2026-2526=1 * SUSE Linux Enterprise Live Patching 12-SP5 zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2026-2553=1 * openSUSE Leap 15.6 zypper in -t patch SUSE-2026-2526=1 ## Package List:

Topics%20covered

Topics Covered

security advisory denial of service security issue SuSE important kernel

References

* bsc#1266229

* bsc#1268282

Cross-

* CVE-2026-43503

* CVE-2026-46323

CVSS scores:

* CVE-2026-43503 ( 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-2026-43503 ( SUSE ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

* CVE-2026-43503 ( NVD ): 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

* CVE-2026-46323 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2026-46323 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Products:

* openSUSE Leap 15.6

* SUSE Linux Enterprise High Performance Computing 12 SP5

* SUSE Linux Enterprise Live Patching 12-SP5

* SUSE Linux Enterprise Live Patching 15-SP6

* SUSE Linux Enterprise Real Time 15 SP6

* SUSE Linux Enterprise Server 12 SP5

* SUSE Linux Enterprise Server 15 SP6

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2553-1
Release Date: 2026-06-23T11:34:46Z
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service security issue SuSE important kernel

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