Security update for the Linux Kernel

Announcement ID:	SUSE-SU-2023:4028-1
Rating:	important
References:	bsc#1208600 bsc#1208995 bsc#1210448 bsc#1213666 bsc#1213927 bsc#1214348 bsc#1214451 bsc#1215115 jsc#PED-4579
Cross-References:	CVE-2023-1077 CVE-2023-1192 CVE-2023-2007 CVE-2023-20588 CVE-2023-3772 CVE-2023-4385 CVE-2023-4459 CVE-2023-4623
CVSS scores:	CVE-2023-1077 ( SUSE ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-1077 ( NVD ): 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-1192 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-1192 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-2007 ( SUSE ): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N CVE-2023-2007 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-20588 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N CVE-2023-20588 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVE-2023-3772 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-3772 ( NVD ): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H CVE-2023-4385 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-4385 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-4459 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-4459 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2023-4623 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2023-4623 ( NVD ): 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 Server 11 SP4 SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE 11-SP4

An update that solves eight vulnerabilities and contains one feature can now be installed.

Description:

The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

• CVE-2023-1077: Fixed a type confusion in pick_next_rt_entity() that could cause memory corruption (bsc#1208600).
• CVE-2023-4623: Fixed a use-after-free issue in the HFSC network scheduler which could be exploited to achieve local privilege escalation (bsc#1215115).
• CVE-2023-1192: Fixed use-after-free in cifs_demultiplex_thread() (bsc#1208995).
• CVE-2023-20588: Fixed a potential data leak that could be triggered through a side channel when division by zero occurred on some AMD processors (bsc#1213927).
• CVE-2023-4459: Fixed a NULL pointer dereference flaw in the vmxnet3 driver that may have allowed a local attacker with user privileges to cause a denial of service (bsc#1214451).
• CVE-2023-3772: Fixed a flaw in the XFRM subsystem that may have allowed a malicious user with CAP_NET_ADMIN privileges to directly dereference a NULL pointer leading to denial of service (bsc#1213666).
• CVE-2023-2007: Removed the dpt_i2o driver due to security issues (bsc#1210448, jsc#PED-4579).
• CVE-2023-4385: Fixed a NULL pointer dereference flaw in dbFree that may have allowed a local attacker to crash the system due to a missing sanity check (bsc#1214348).

Special Instructions and Notes:

• Please reboot the system after installing this update.

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 Server 11 SP4 LTSS EXTREME CORE 11-SP4
  zypper in -t patch SUSE-SLE-SERVER-11-SP4-LTSS-EXTREME-CORE-2023-4028=1
• SUSE Linux Enterprise Server 11 SP4
  zypper in -t patch SUSE-SLE-SERVER-11-SP4-LTSS-EXTREME-CORE-2023-4028=1

Package List:

• SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE 11-SP4 (nosrc x86_64)
  • kernel-trace-3.0.101-108.147.1
  • kernel-default-3.0.101-108.147.1
  • kernel-ec2-3.0.101-108.147.1
  • kernel-xen-3.0.101-108.147.1
• SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME CORE 11-SP4 (x86_64)
  • kernel-source-3.0.101-108.147.1
  • kernel-trace-base-3.0.101-108.147.1
  • kernel-ec2-devel-3.0.101-108.147.1
  • kernel-xen-base-3.0.101-108.147.1
  • kernel-syms-3.0.101-108.147.1
  • kernel-ec2-base-3.0.101-108.147.1
  • kernel-xen-devel-3.0.101-108.147.1
  • kernel-default-base-3.0.101-108.147.1
  • kernel-default-devel-3.0.101-108.147.1
  • kernel-trace-devel-3.0.101-108.147.1
• SUSE Linux Enterprise Server 11 SP4 (nosrc x86_64)
  • kernel-trace-3.0.101-108.147.1
  • kernel-default-3.0.101-108.147.1
  • kernel-ec2-3.0.101-108.147.1
  • kernel-xen-3.0.101-108.147.1
• SUSE Linux Enterprise Server 11 SP4 (x86_64)
  • kernel-source-3.0.101-108.147.1
  • kernel-trace-base-3.0.101-108.147.1
  • kernel-ec2-devel-3.0.101-108.147.1
  • kernel-xen-base-3.0.101-108.147.1
  • kernel-syms-3.0.101-108.147.1
  • kernel-ec2-base-3.0.101-108.147.1
  • kernel-xen-devel-3.0.101-108.147.1
  • kernel-default-base-3.0.101-108.147.1
  • kernel-default-devel-3.0.101-108.147.1
  • kernel-trace-devel-3.0.101-108.147.1

References:

• https://www.suse.com/security/cve/CVE-2023-1077.html
• https://www.suse.com/security/cve/CVE-2023-1192.html
• https://www.suse.com/security/cve/CVE-2023-2007.html
• https://www.suse.com/security/cve/CVE-2023-20588.html
• https://www.suse.com/security/cve/CVE-2023-3772.html
• https://www.suse.com/security/cve/CVE-2023-4385.html
• https://www.suse.com/security/cve/CVE-2023-4459.html
• https://www.suse.com/security/cve/CVE-2023-4623.html
• https://bugzilla.suse.com/show_bug.cgi?id=1208600
• https://bugzilla.suse.com/show_bug.cgi?id=1208995
• https://bugzilla.suse.com/show_bug.cgi?id=1210448
• https://bugzilla.suse.com/show_bug.cgi?id=1213666
• https://bugzilla.suse.com/show_bug.cgi?id=1213927
• https://bugzilla.suse.com/show_bug.cgi?id=1214348
• https://bugzilla.suse.com/show_bug.cgi?id=1214451
• https://bugzilla.suse.com/show_bug.cgi?id=1215115
• https://jira.suse.com/browse/PED-4579