Security update for the Linux Kernel RT (Live Patch 5 for SLE 15 SP6)

Announcement ID: SUSE-SU-2025:03343-1
Release Date: 2025-09-24T13:03:52Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2025-21756 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2025-21756 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2025-38109 ( 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-2025-38109 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2025-38177 ( 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-2025-38177 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2025-38181 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  • CVE-2025-38181 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2025-38498 ( 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-2025-38498 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2025-38555 ( 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-2025-38555 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected Products:
  • SUSE Linux Enterprise Live Patching 15-SP6
  • SUSE Linux Enterprise Real Time 15 SP6
  • SUSE Linux Enterprise Server 15 SP6
  • SUSE Linux Enterprise Server for SAP Applications 15 SP6

An update that solves six vulnerabilities can now be installed.

Description:

This update for the Linux Kernel 6.4.0-150600_10_17 fixes several issues.

The following security issues were fixed:

  • CVE-2025-38177: sch_hfsc: make hfsc_qlen_notify() idempotent (bsc#1246356).
  • CVE-2025-38109: net/mlx5: fix ECVF vports unload on shutdown flow (bsc#1245685).
  • CVE-2025-38181: calipso: Fix null-ptr-deref in calipso_req_{set,del}attr() (bsc#1246001).
  • CVE-2025-21756: vsock: Keep the binding until socket destruction (bsc#1245795).
  • CVE-2025-21755: vsock: Orphan socket after transport release (bsc#1245795).
  • CVE-2025-38498: do_change_type(): refuse to operate on unmounted/not ours mounts (bsc#1247499).
  • CVE-2025-38555: usb: gadget : fix use-after-free in composite_dev_cleanup() (bsc#1248298).

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-SP6-2025-3343=1

Package List:

  • SUSE Linux Enterprise Live Patching 15-SP6 (x86_64)
    • kernel-livepatch-6_4_0-150600_10_17-rt-debuginfo-15-150600.2.2
    • kernel-livepatch-SLE15-SP6-RT_Update_5-debugsource-15-150600.2.2
    • kernel-livepatch-6_4_0-150600_10_17-rt-15-150600.2.2

References: