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SUSE Linux Micro 6.0 Kernel RT Important Security Update 2026-20458-1

suse
Calendar Grey February 26, 2026
Dist Suse Esm H88
A critical update for SUSE Linux Micro 6.0 addressing five vulnerabilities and adding essential fixes.
An update that solves five vulnerabilities and has two fixes can now be installed.

Summary

## This update for the SUSE Linux Enterprise kernel 6.4.0-31.1 fixes various security issues The following security issues were fixed: * CVE-2025-38111: net/mdiobus: Fix potential out-of-bounds read/write access (bsc#1249455). * CVE-2025-38352: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() (bsc#1249205). * CVE-2025-39742: RDMA: hfi1: fix possible divide-by-zero in find_hw_thread_mask() (bsc#1249480). * CVE-2025-40129: sunrpc: fix null pointer dereference on zero-length checksum (bsc#1253473). * CVE-2025-40186: tcp: Don't call reqsk_fastopen_remove() in tcp_conn_request() (bsc#1253439). The following non security issue was fixed: * bsc#1249241: fix addr_bit_set() issue on big-endian machines

Topics%20covered

Topics Covered

security advisory SuSE important fix kernel-rt live patch

References

* bsc#1249205

* bsc#1249241

* bsc#1249455

* bsc#1249480

* bsc#1253439

* bsc#1253473

* bsc#1256928

Cross-

* CVE-2025-38111

* CVE-2025-38352

* CVE-2025-39742

* CVE-2025-40129

* CVE-2025-40186

CVSS scores:

* CVE-2025-38111 ( 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-2025-38111 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-38111 ( NVD ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

* CVE-2025-38352 ( 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-2025-38352 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-38352 ( NVD ): 7.4 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-39742 ( SUSE ): 7.3

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:20458-1
Release Date: 2026-02-19T09:17:44Z
Rating: important

Topics%20covered

Topics Covered

security advisory SuSE important fix kernel-rt live patch

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