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SUSE Linux 15 SP6 Kernel Important Security Update 2026-0546-1

suse
Calendar Grey February 16, 2026
Dist Suse Esm H88
Four important security flaws in the kernel for SUSE Linux Enterprise 15 SP6 resolved with this latest update. Immediate action required.
An update that solves four vulnerabilities can now be installed.

Summary

## This update for the SUSE Linux Enterprise kernel 6.4.0-150600.23.60 fixes various security issues The following security issues were fixed: * 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). ## 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

Topics%20covered

Topics Covered

security advisory denial of service SuSE important kernel live patch

References

* bsc#1249205

* bsc#1249480

* bsc#1253439

* bsc#1253473

Cross-

* CVE-2025-38352

* CVE-2025-39742

* CVE-2025-40129

* CVE-2025-40186

CVSS scores:

* 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

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-2025-39742 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

* CVE-2025-39742 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

* CVE-2025-40129 ( SUSE ): 8.7

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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:0546-1
Release Date: 2026-02-15T19:33:43Z
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service SuSE important kernel live patch

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