SUSE update for the Linux Kernel

Published: 2023-11-06 | Updated: 2024-05-13

Risk	Medium
Patch available	YES
Number of vulnerabilities	8
CVE-ID	CVE-2023-2163 CVE-2023-31085 CVE-2023-34324 CVE-2023-3777 CVE-2023-39189 CVE-2023-45862 CVE-2023-46813 CVE-2023-5178
CWE-ID	CWE-787 CWE-369 CWE-833 CWE-399 CWE-125 CWE-770 CWE-284 CWE-416
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #7 is available. Public exploit code for vulnerability #8 is available.
Vulnerable software	openSUSE Leap Micro Operating systems & Components / Operating system SUSE Linux Enterprise Micro for Rancher Operating systems & Components / Operating system SUSE Real Time Module Operating systems & Components / Operating system SUSE Linux Enterprise Micro Operating systems & Components / Operating system SUSE Linux Enterprise Live Patching Operating systems & Components / Operating system SUSE Linux Enterprise Server for SAP Applications 15 Operating systems & Components / Operating system SUSE Linux Enterprise Server 15 Operating systems & Components / Operating system SUSE Linux Enterprise Real Time 15 Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing 15 Operating systems & Components / Operating system openSUSE Leap Operating systems & Components / Operating system kernel-livepatch-5_14_21-150400_15_59-rt Operating systems & Components / Operating system package or component kernel-livepatch-SLE15-SP4-RT_Update_15-debugsource Operating systems & Components / Operating system package or component kernel-livepatch-5_14_21-150400_15_59-rt-debuginfo Operating systems & Components / Operating system package or component kernel-rt_debug Operating systems & Components / Operating system package or component kernel-source-rt Operating systems & Components / Operating system package or component kernel-devel-rt Operating systems & Components / Operating system package or component ocfs2-kmp-rt-debuginfo Operating systems & Components / Operating system package or component ocfs2-kmp-rt Operating systems & Components / Operating system package or component gfs2-kmp-rt Operating systems & Components / Operating system package or component kernel-rt-devel-debuginfo Operating systems & Components / Operating system package or component kernel-rt_debug-debugsource Operating systems & Components / Operating system package or component cluster-md-kmp-rt-debuginfo Operating systems & Components / Operating system package or component gfs2-kmp-rt-debuginfo Operating systems & Components / Operating system package or component dlm-kmp-rt-debuginfo Operating systems & Components / Operating system package or component kernel-syms-rt Operating systems & Components / Operating system package or component kernel-rt-devel Operating systems & Components / Operating system package or component cluster-md-kmp-rt Operating systems & Components / Operating system package or component dlm-kmp-rt Operating systems & Components / Operating system package or component kernel-rt_debug-devel Operating systems & Components / Operating system package or component kernel-rt_debug-devel-debuginfo Operating systems & Components / Operating system package or component kernel-rt_debug-debuginfo Operating systems & Components / Operating system package or component kernel-rt-debuginfo Operating systems & Components / Operating system package or component kernel-rt-debugsource Operating systems & Components / Operating system package or component kernel-rt Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 8 vulnerabilities.

1) Out-of-bounds write

EUVDB-ID: #VU79673

Risk: Low

CVSSv4.0: 5.9 [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/E:U/U:Clear]

CVE-ID: CVE-2023-2163

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error in BPF verifier caused by improper marking of registers for precision tracking in certain situations. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

openSUSE Leap Micro: 5.3 - 5.4

SUSE Linux Enterprise Micro for Rancher: 5.3 - 5.4

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_59-rt: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_15-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_59-rt-debuginfo: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.59.1

kernel-source-rt: before 5.14.21-150400.15.59.1

kernel-devel-rt: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt: before 5.14.21-150400.15.59.1

gfs2-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-syms-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt: before 5.14.21-150400.15.59.1

dlm-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debugsource: before 5.14.21-150400.15.59.1

kernel-rt: before 5.14.21-150400.15.59.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20234351-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Division by zero

EUVDB-ID: #VU82660

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-31085

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a divide by zero error within the drivers/mtd/ubi/cdev.c driver. A local user can perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

openSUSE Leap Micro: 5.3 - 5.4

SUSE Linux Enterprise Micro for Rancher: 5.3 - 5.4

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_59-rt: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_15-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_59-rt-debuginfo: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.59.1

kernel-source-rt: before 5.14.21-150400.15.59.1

kernel-devel-rt: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt: before 5.14.21-150400.15.59.1

gfs2-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-syms-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt: before 5.14.21-150400.15.59.1

dlm-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debugsource: before 5.14.21-150400.15.59.1

kernel-rt: before 5.14.21-150400.15.59.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20234351-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Deadlock

EUVDB-ID: #VU81900

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-34324

CWE-ID: CWE-833 - Deadlock

Exploit availability: No

Description

The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.

The vulnerability exists due to improper event handling in Linux kernel. A malicious guest can disable paravirtualized device to cause a deadlock in a backend domain (other than dom0).

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

openSUSE Leap Micro: 5.3 - 5.4

SUSE Linux Enterprise Micro for Rancher: 5.3 - 5.4

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_59-rt: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_15-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_59-rt-debuginfo: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.59.1

kernel-source-rt: before 5.14.21-150400.15.59.1

kernel-devel-rt: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt: before 5.14.21-150400.15.59.1

gfs2-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-syms-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt: before 5.14.21-150400.15.59.1

dlm-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debugsource: before 5.14.21-150400.15.59.1

kernel-rt: before 5.14.21-150400.15.59.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20234351-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Resource management error

EUVDB-ID: #VU80121

Risk: Low

CVSSv4.0: 5.9 [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/E:U/U:Clear]

CVE-ID: CVE-2023-3777

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper handling of table rules flush in certain circumstances within the netfilter subsystem in net/netfilter/nf_tables_api.c. A local user can perform a denial of service (DoS) attack or execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

openSUSE Leap Micro: 5.3 - 5.4

SUSE Linux Enterprise Micro for Rancher: 5.3 - 5.4

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_59-rt: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_15-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_59-rt-debuginfo: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.59.1

kernel-source-rt: before 5.14.21-150400.15.59.1

kernel-devel-rt: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt: before 5.14.21-150400.15.59.1

gfs2-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-syms-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt: before 5.14.21-150400.15.59.1

dlm-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debugsource: before 5.14.21-150400.15.59.1

kernel-rt: before 5.14.21-150400.15.59.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20234351-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Out-of-bounds read

EUVDB-ID: #VU82659

Risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-39189

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary condition within the nfnl_osf_add_callback() function in Linux kernel Netfilter. A local user with CAP_NET_ADMIN capability can trigger an out-of-bounds read error and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

openSUSE Leap Micro: 5.3 - 5.4

SUSE Linux Enterprise Micro for Rancher: 5.3 - 5.4

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_59-rt: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_15-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_59-rt-debuginfo: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.59.1

kernel-source-rt: before 5.14.21-150400.15.59.1

kernel-devel-rt: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt: before 5.14.21-150400.15.59.1

gfs2-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-syms-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt: before 5.14.21-150400.15.59.1

dlm-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debugsource: before 5.14.21-150400.15.59.1

kernel-rt: before 5.14.21-150400.15.59.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20234351-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Allocation of Resources Without Limits or Throttling

EUVDB-ID: #VU82766

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-45862

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the ENE UB6250 reader driver in drivers/usb/storage/ene_ub6250.c. A local user can trigger a boundary error and perform a denial of service (DoS) attack.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

openSUSE Leap Micro: 5.3 - 5.4

SUSE Linux Enterprise Micro for Rancher: 5.3 - 5.4

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_59-rt: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_15-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_59-rt-debuginfo: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.59.1

kernel-source-rt: before 5.14.21-150400.15.59.1

kernel-devel-rt: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt: before 5.14.21-150400.15.59.1

gfs2-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-syms-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt: before 5.14.21-150400.15.59.1

dlm-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debugsource: before 5.14.21-150400.15.59.1

kernel-rt: before 5.14.21-150400.15.59.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20234351-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Improper access control

EUVDB-ID: #VU82764

Risk: Low

CVSSv4.0: 7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2023-46813

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: Yes

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to improper access checking in the #VC handler and instruction emulation of the SEV-ES emulation of MMIO accesses. A local user can gain arbitrary write access to kernel memory and execute arbitrary code with elevated privileges.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

openSUSE Leap Micro: 5.3 - 5.4

SUSE Linux Enterprise Micro for Rancher: 5.3 - 5.4

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_59-rt: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_15-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_59-rt-debuginfo: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.59.1

kernel-source-rt: before 5.14.21-150400.15.59.1

kernel-devel-rt: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt: before 5.14.21-150400.15.59.1

gfs2-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-syms-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt: before 5.14.21-150400.15.59.1

dlm-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debugsource: before 5.14.21-150400.15.59.1

kernel-rt: before 5.14.21-150400.15.59.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20234351-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

8) Use-after-free

EUVDB-ID: #VU82658

Risk: Low

CVSSv4.0: 7.1 [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/E:P/U:Clear]

CVE-ID: CVE-2023-5178

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

The vulnerability allows a local authenticated user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the drivers/nvme/target/tcp.c in nvmet_tcp_free_crypto due to a logical bug in the NVMe-oF/TCP subsystem in the Linux kernel. A local authenticated user can trigger a use-after-free error and escalate privileges on the system.

Mitigation

Update the affected package the Linux Kernel to the latest version.

Vulnerable software versions

openSUSE Leap Micro: 5.3 - 5.4

SUSE Linux Enterprise Micro for Rancher: 5.3 - 5.4

SUSE Real Time Module: 15-SP4

SUSE Linux Enterprise Micro: 5.3 - 5.4

SUSE Linux Enterprise Live Patching: 15-SP4

SUSE Linux Enterprise Server for SAP Applications 15: SP4

SUSE Linux Enterprise Server 15: SP4

SUSE Linux Enterprise Real Time 15: SP4

SUSE Linux Enterprise High Performance Computing 15: SP4

openSUSE Leap: 15.4

kernel-livepatch-5_14_21-150400_15_59-rt: before 1-150400.1.3.1

kernel-livepatch-SLE15-SP4-RT_Update_15-debugsource: before 1-150400.1.3.1

kernel-livepatch-5_14_21-150400_15_59-rt-debuginfo: before 1-150400.1.3.1

kernel-rt_debug: before 5.14.21-150400.15.59.1

kernel-source-rt: before 5.14.21-150400.15.59.1

kernel-devel-rt: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

ocfs2-kmp-rt: before 5.14.21-150400.15.59.1

gfs2-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debugsource: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

gfs2-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

dlm-kmp-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-syms-rt: before 5.14.21-150400.15.59.1

kernel-rt-devel: before 5.14.21-150400.15.59.1

cluster-md-kmp-rt: before 5.14.21-150400.15.59.1

dlm-kmp-rt: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel: before 5.14.21-150400.15.59.1

kernel-rt_debug-devel-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt_debug-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debuginfo: before 5.14.21-150400.15.59.1

kernel-rt-debugsource: before 5.14.21-150400.15.59.1

kernel-rt: before 5.14.21-150400.15.59.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2023/suse-su-20234351-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.