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SUSE Linux Micro 6.0 Kernel RT Important Vuln Fix 2026-20847-1

suse
Calendar Grey March 27, 2026
Dist Suse Esm H88
SUSE Linux Micro 6.0 update fixes eight issues in Kernel RT, enhancing security and stability. Recommended installation methods included.
An update that solves eight vulnerabilities can now be installed.

Summary

## This update for the SUSE Linux Enterprise Kernel 6.4.0-25.1 fixes various security issues The following security issues were fixed: * CVE-2025-21738: ata: libata-sff: ensure that we cannot write outside the allocated buffer (bsc#1257118). * CVE-2025-38159: wifi: rtw88: fix the 'para' buffer size to avoid reading out of bounds (bsc#1257629). * CVE-2025-38488: smb: client: fix use-after-free in crypt_message when using async crypto (bsc#1247240). * CVE-2025-40258: mptcp: fix race condition in mptcp_schedule_work() (bsc#1255053). * CVE-2025-40284: Bluetooth: MGMT: cancel mesh send timer when hdev removed (bsc#1257669). * CVE-2025-40297: net: bridge: fix use-after-free due to MST port state bypass (bsc#1255895). * CVE-2025-68813: ipvs: fix ipv4 null-ptr-deref in route error path (bsc#1256644).

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE threat important kernel

References

* bsc#1247240

* bsc#1255053

* bsc#1255895

* bsc#1256624

* bsc#1256644

* bsc#1257118

* bsc#1257629

* bsc#1257669

Cross-

* CVE-2025-21738

* CVE-2025-38159

* CVE-2025-38488

* CVE-2025-40258

* CVE-2025-40284

* CVE-2025-40297

* CVE-2025-68813

* CVE-2025-71085

CVSS scores:

* CVE-2025-21738 ( 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

* CVE-2025-21738 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-21738 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

* CVE-2025-38159 ( SUSE ): 7.3

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

* CVE-2025-38159 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-38159 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:20847-1
Release Date: 2026-03-24T16:48:26Z
Rating: important

Topics%20covered

Topics Covered

security advisory buffer overflow SuSE threat important kernel

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