SUSE Linux Enterprise 15 SP6 Kernel Important Security Update 2026-1259-1
suse
April 13, 2026
An update that solves eight vulnerabilities can now be installed.
Summary
## This update for the SUSE Linux Enterprise Kernel 6.4.0-150600.23.42 fixes various security issues The following security issues were fixed: * CVE-2025-39973: i40e: add validation for ring_len param (bsc#1252036). * CVE-2025-40018: ipvs: Defer ip_vs_ftp unregister during netns cleanup (bsc#1252689). * CVE-2025-40159: xsk: Harden userspace-supplied xdp_desc validation (bsc#1253404). * CVE-2025-71120: SUNRPC: svcauth_gss: avoid NULL deref on zero length gss_token in gss_read_proxy_verf (bsc#1256780). * CVE-2026-22999: net/sched: sch_qfq: do not free existing class in qfq_change_class() (bsc#1257238). * CVE-2026-23074: net/sched: Enforce that teql can only be used as root qdisc (bsc#1258051). * CVE-2026-23111: netfilter: nf_tables: fix inverted genmask check in
Topics Covered
References
* bsc#1252036
* bsc#1252689
* bsc#1253404
* bsc#1256780
* bsc#1257238
* bsc#1258051
* bsc#1258183
* bsc#1258784
Cross-
* CVE-2025-39973
* CVE-2025-40018
* CVE-2025-40159
* CVE-2025-71120
* CVE-2026-22999
* CVE-2026-23074
* CVE-2026-23111
* CVE-2026-23209
CVSS scores:
* CVE-2025-39973 ( 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-2025-39973 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
* CVE-2025-40018 ( 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-2025-40018 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
* CVE-2025-40159 ( 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
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Severity
important
Lowest
Low
Medium
High
Critical
Announcement ID: SUSE-SU-2026:1259-1
Release Date: 2026-04-10T17:35:16Z
Rating: important
Topics Covered
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