Security update for the Linux Kernel

Announcement ID: SUSE-SU-2023:4358-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2023-2163 ( SUSE ): 7.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
  • CVE-2023-2163 ( NVD ): 10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
  • CVE-2023-3111 ( SUSE ): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
  • CVE-2023-3111 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2023-34324 ( SUSE ): 5.7 CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • CVE-2023-3777 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2023-3777 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2023-39189 ( SUSE ): 4.4 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
  • CVE-2023-39189 ( NVD ): 5.1 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L
  • CVE-2023-39192 ( SUSE ): 6.0 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
  • CVE-2023-39192 ( NVD ): 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:L
  • CVE-2023-39193 ( SUSE ): 5.1 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L
  • CVE-2023-39193 ( NVD ): 6.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
  • CVE-2023-39194 ( SUSE ): 3.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N
  • CVE-2023-39194 ( NVD ): 3.2 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N
  • CVE-2023-42754 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • CVE-2023-42754 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products:
  • SUSE Linux Enterprise Micro 5.1
  • SUSE Linux Enterprise Micro 5.2
  • SUSE Linux Enterprise Micro for Rancher 5.2

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

Description:

The SUSE Linux Enterprise 15 SP3 RT kernel was updated to receive various security and bugfixes.

The following security bugs were fixed:

  • CVE-2023-2163: Fixed an incorrect verifier pruning in BPF that could lead to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape. (bsc#1215518)
  • CVE-2023-3777: Fixed a use-after-free vulnerability in netfilter: nf_tables component can be exploited to achieve local privilege escalation. (bsc#1215095)
  • CVE-2023-34324: Fixed a possible deadlock in Linux kernel event handling. (bsc#1215745).
  • CVE-2023-39189: Fixed a flaw in the Netfilter subsystem that could allow a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure. (bsc#1216046)
  • CVE-2023-3111: Fixed a use-after-free vulnerability in prepare_to_relocate in fs/btrfs/relocation.c (bsc#1212051).
  • CVE-2023-39194: Fixed an out of bounds read in the XFRM subsystem (bsc#1215861).
  • CVE-2023-39193: Fixed an out of bounds read in the xtables subsystem (bsc#1215860).
  • CVE-2023-39192: Fixed an out of bounds read in the netfilter (bsc#1215858).
  • CVE-2023-42754: Fixed a NULL pointer dereference in the IPv4 stack that could lead to denial of service (bsc#1215467).

The following non-security bugs were fixed:

  • nvme-fc: Prevent null pointer dereference in nvme_fc_io_getuuid() (bsc#1214842).

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 Micro 5.1
    zypper in -t patch SUSE-SUSE-MicroOS-5.1-2023-4358=1
  • SUSE Linux Enterprise Micro 5.2
    zypper in -t patch SUSE-SUSE-MicroOS-5.2-2023-4358=1
  • SUSE Linux Enterprise Micro for Rancher 5.2
    zypper in -t patch SUSE-SUSE-MicroOS-5.2-2023-4358=1

Package List:

  • SUSE Linux Enterprise Micro 5.1 (nosrc x86_64)
    • kernel-rt-5.3.18-150300.149.1
  • SUSE Linux Enterprise Micro 5.1 (x86_64)
    • kernel-rt-debuginfo-5.3.18-150300.149.1
    • kernel-rt-debugsource-5.3.18-150300.149.1
  • SUSE Linux Enterprise Micro 5.2 (nosrc x86_64)
    • kernel-rt-5.3.18-150300.149.1
  • SUSE Linux Enterprise Micro 5.2 (x86_64)
    • kernel-rt-debuginfo-5.3.18-150300.149.1
    • kernel-rt-debugsource-5.3.18-150300.149.1
  • SUSE Linux Enterprise Micro for Rancher 5.2 (nosrc x86_64)
    • kernel-rt-5.3.18-150300.149.1
  • SUSE Linux Enterprise Micro for Rancher 5.2 (x86_64)
    • kernel-rt-debuginfo-5.3.18-150300.149.1
    • kernel-rt-debugsource-5.3.18-150300.149.1

References: