# Security update for the Linux Kernel (Live Patch 21 for SLE 15 SP4)

Announcement ID: SUSE-SU-2024:3777-1  
Release Date: 2024-10-29T17:03:52Z  
Rating: important  
References:

  * bsc#1225011
  * bsc#1225012
  * bsc#1225309
  * bsc#1225311
  * bsc#1225819
  * bsc#1227471
  * bsc#1231353

  
Cross-References:

  * CVE-2021-47598
  * CVE-2023-52752
  * CVE-2024-35862
  * CVE-2024-35863
  * CVE-2024-35864
  * CVE-2024-35867

  
CVSS scores:

  * CVE-2021-47598 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2021-47598 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-52752 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2023-52752 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2024-35862 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2024-35863 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2024-35864 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2024-35867 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

  
Affected Products:

  * openSUSE Leap 15.4
  * SUSE Linux Enterprise High Performance Computing 15 SP4
  * SUSE Linux Enterprise Live Patching 15-SP4
  * SUSE Linux Enterprise Micro 5.3
  * SUSE Linux Enterprise Micro 5.4
  * SUSE Linux Enterprise Real Time 15 SP4
  * SUSE Linux Enterprise Server 15 SP4
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4

  
  
An update that solves six vulnerabilities and has one security fix can now be
installed.

## Description:

This update for the Linux Kernel 5.14.21-150400_24_100 fixes several issues.

The following security issues were fixed:

  * CVE-2021-47598: sch_cake: do not call cake_destroy() from cake_init()
    (bsc#1227471).
  * CVE-2024-35863: Fixed potential UAF in is_valid_oplock_break()
    (bsc#1225011).
  * CVE-2023-52752: smb: client: fix use-after-free bug in
    cifs_debug_data_proc_show() (bsc#1225819).
  * CVE-2024-35862: Fixed potential UAF in smb2_is_network_name_deleted()
    (bsc#1225311).
  * CVE-2024-35867: Fixed potential UAF in cifs_stats_proc_show() (bsc#1225012).
  * CVE-2024-35864: Fixed potential UAF in smb2_is_valid_lease_break()
    (bsc#1225309).
  * Intermittent nfs mount failures (may be due to SUNRPC over UDP)
    (bsc#1231353)

## 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 15.4  
    zypper in -t patch SUSE-2024-3777=1

  * SUSE Linux Enterprise Live Patching 15-SP4  
    zypper in -t patch SUSE-SLE-Module-Live-Patching-15-SP4-2024-3777=1

## Package List:

  * openSUSE Leap 15.4 (ppc64le s390x x86_64)
    * kernel-livepatch-5_14_21-150400_24_100-default-13-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_100-default-debuginfo-13-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_21-debugsource-13-150400.2.1
  * SUSE Linux Enterprise Live Patching 15-SP4 (ppc64le s390x x86_64)
    * kernel-livepatch-5_14_21-150400_24_100-default-13-150400.2.1
    * kernel-livepatch-5_14_21-150400_24_100-default-debuginfo-13-150400.2.1
    * kernel-livepatch-SLE15-SP4_Update_21-debugsource-13-150400.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2021-47598.html
  * https://www.suse.com/security/cve/CVE-2023-52752.html
  * https://www.suse.com/security/cve/CVE-2024-35862.html
  * https://www.suse.com/security/cve/CVE-2024-35863.html
  * https://www.suse.com/security/cve/CVE-2024-35864.html
  * https://www.suse.com/security/cve/CVE-2024-35867.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1225011
  * https://bugzilla.suse.com/show_bug.cgi?id=1225012
  * https://bugzilla.suse.com/show_bug.cgi?id=1225309
  * https://bugzilla.suse.com/show_bug.cgi?id=1225311
  * https://bugzilla.suse.com/show_bug.cgi?id=1225819
  * https://bugzilla.suse.com/show_bug.cgi?id=1227471
  * https://bugzilla.suse.com/show_bug.cgi?id=1231353