SUSE update for the Linux Kernel



Risk Medium
Patch available YES
Number of vulnerabilities 14
CVE-ID CVE-2020-24504
CVE-2020-27820
CVE-2021-28711
CVE-2021-28712
CVE-2021-28713
CVE-2021-28714
CVE-2021-28715
CVE-2021-33098
CVE-2021-4001
CVE-2021-4002
CVE-2021-43975
CVE-2021-43976
CVE-2021-45485
CVE-2021-45486
CWE-ID CWE-400
CWE-416
CWE-404
CWE-20
CWE-362
CWE-401
CWE-787
CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
SUSE Linux Enterprise Module for Realtime
Operating systems & Components / Operating system

SUSE MicroOS
Operating systems & Components / Operating system

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

kernel-syms-rt
Operating systems & Components / Operating system package or component

kernel-rt_debug-devel-debuginfo
Operating systems & Components / Operating system package or component

kernel-rt_debug-devel
Operating systems & Components / Operating system package or component

kernel-rt_debug-debugsource
Operating systems & Components / Operating system package or component

kernel-rt_debug-debuginfo
Operating systems & Components / Operating system package or component

kernel-rt-devel-debuginfo
Operating systems & Components / Operating system package or component

kernel-rt-devel
Operating systems & Components / Operating system package or component

gfs2-kmp-rt-debuginfo
Operating systems & Components / Operating system package or component

gfs2-kmp-rt
Operating systems & Components / Operating system package or component

dlm-kmp-rt-debuginfo
Operating systems & Components / Operating system package or component

dlm-kmp-rt
Operating systems & Components / Operating system package or component

cluster-md-kmp-rt-debuginfo
Operating systems & Components / Operating system package or component

cluster-md-kmp-rt
Operating systems & Components / Operating system package or component

kernel-rt-debugsource
Operating systems & Components / Operating system package or component

kernel-rt-debuginfo
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 14 vulnerabilities.

1) Resource exhaustion

EUVDB-ID: #VU50689

Risk: Low

CVSSv4.0: [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-2020-24504

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources. A local user can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Module for Realtime: 15-SP3

SUSE MicroOS: 5.1

kernel-source-rt: before 5.3.18-68.1

kernel-devel-rt: before 5.3.18-68.1

ocfs2-kmp-rt-debuginfo: before 5.3.18-68.1

ocfs2-kmp-rt: before 5.3.18-68.1

kernel-syms-rt: before 5.3.18-68.1

kernel-rt_debug-devel-debuginfo: before 5.3.18-68.1

kernel-rt_debug-devel: before 5.3.18-68.1

kernel-rt_debug-debugsource: before 5.3.18-68.1

kernel-rt_debug-debuginfo: before 5.3.18-68.1

kernel-rt-devel-debuginfo: before 5.3.18-68.1

kernel-rt-devel: before 5.3.18-68.1

gfs2-kmp-rt-debuginfo: before 5.3.18-68.1

gfs2-kmp-rt: before 5.3.18-68.1

dlm-kmp-rt-debuginfo: before 5.3.18-68.1

dlm-kmp-rt: before 5.3.18-68.1

cluster-md-kmp-rt-debuginfo: before 5.3.18-68.1

cluster-md-kmp-rt: before 5.3.18-68.1

kernel-rt-debugsource: before 5.3.18-68.1

kernel-rt-debuginfo: before 5.3.18-68.1

kernel-rt: before 5.3.18-68.1

CPE2.3 External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220079-1/


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) Use-after-free

EUVDB-ID: #VU63322

Risk: Low

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

CVE-ID: CVE-2020-27820

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code with elevated privileges.

The vulnerability exists due to a use-after-free error in nouveau's postclose() handler. A local user can send specially crafted data to the system and execute arbitrary code with elevated privileges.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Module for Realtime: 15-SP3

SUSE MicroOS: 5.1

kernel-source-rt: before 5.3.18-68.1

kernel-devel-rt: before 5.3.18-68.1

ocfs2-kmp-rt-debuginfo: before 5.3.18-68.1

ocfs2-kmp-rt: before 5.3.18-68.1

kernel-syms-rt: before 5.3.18-68.1

kernel-rt_debug-devel-debuginfo: before 5.3.18-68.1

kernel-rt_debug-devel: before 5.3.18-68.1

kernel-rt_debug-debugsource: before 5.3.18-68.1

kernel-rt_debug-debuginfo: before 5.3.18-68.1

kernel-rt-devel-debuginfo: before 5.3.18-68.1

kernel-rt-devel: before 5.3.18-68.1

gfs2-kmp-rt-debuginfo: before 5.3.18-68.1

gfs2-kmp-rt: before 5.3.18-68.1

dlm-kmp-rt-debuginfo: before 5.3.18-68.1

dlm-kmp-rt: before 5.3.18-68.1

cluster-md-kmp-rt-debuginfo: before 5.3.18-68.1

cluster-md-kmp-rt: before 5.3.18-68.1

kernel-rt-debugsource: before 5.3.18-68.1

kernel-rt-debuginfo: before 5.3.18-68.1

kernel-rt: before 5.3.18-68.1

CPE2.3 External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220079-1/


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) Resource exhaustion

EUVDB-ID: #VU63563

Risk: Low

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

CVE-ID: CVE-2021-28711

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to improper limits for number of events driver domains could send to other guest VMs. A local user can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Module for Realtime: 15-SP3

SUSE MicroOS: 5.1

kernel-source-rt: before 5.3.18-68.1

kernel-devel-rt: before 5.3.18-68.1

ocfs2-kmp-rt-debuginfo: before 5.3.18-68.1

ocfs2-kmp-rt: before 5.3.18-68.1

kernel-syms-rt: before 5.3.18-68.1

kernel-rt_debug-devel-debuginfo: before 5.3.18-68.1

kernel-rt_debug-devel: before 5.3.18-68.1

kernel-rt_debug-debugsource: before 5.3.18-68.1

kernel-rt_debug-debuginfo: before 5.3.18-68.1

kernel-rt-devel-debuginfo: before 5.3.18-68.1

kernel-rt-devel: before 5.3.18-68.1

gfs2-kmp-rt-debuginfo: before 5.3.18-68.1

gfs2-kmp-rt: before 5.3.18-68.1

dlm-kmp-rt-debuginfo: before 5.3.18-68.1

dlm-kmp-rt: before 5.3.18-68.1

cluster-md-kmp-rt-debuginfo: before 5.3.18-68.1

cluster-md-kmp-rt: before 5.3.18-68.1

kernel-rt-debugsource: before 5.3.18-68.1

kernel-rt-debuginfo: before 5.3.18-68.1

kernel-rt: before 5.3.18-68.1

CPE2.3 External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220079-1/


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.

4) Resource exhaustion

EUVDB-ID: #VU63564

Risk: Low

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

CVE-ID: CVE-2021-28712

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to improper limits for number of events driver domains could send to other guest VMs. A local user can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Module for Realtime: 15-SP3

SUSE MicroOS: 5.1

kernel-source-rt: before 5.3.18-68.1

kernel-devel-rt: before 5.3.18-68.1

ocfs2-kmp-rt-debuginfo: before 5.3.18-68.1

ocfs2-kmp-rt: before 5.3.18-68.1

kernel-syms-rt: before 5.3.18-68.1

kernel-rt_debug-devel-debuginfo: before 5.3.18-68.1

kernel-rt_debug-devel: before 5.3.18-68.1

kernel-rt_debug-debugsource: before 5.3.18-68.1

kernel-rt_debug-debuginfo: before 5.3.18-68.1

kernel-rt-devel-debuginfo: before 5.3.18-68.1

kernel-rt-devel: before 5.3.18-68.1

gfs2-kmp-rt-debuginfo: before 5.3.18-68.1

gfs2-kmp-rt: before 5.3.18-68.1

dlm-kmp-rt-debuginfo: before 5.3.18-68.1

dlm-kmp-rt: before 5.3.18-68.1

cluster-md-kmp-rt-debuginfo: before 5.3.18-68.1

cluster-md-kmp-rt: before 5.3.18-68.1

kernel-rt-debugsource: before 5.3.18-68.1

kernel-rt-debuginfo: before 5.3.18-68.1

kernel-rt: before 5.3.18-68.1

CPE2.3 External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220079-1/


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) Resource exhaustion

EUVDB-ID: #VU63565

Risk: Low

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

CVE-ID: CVE-2021-28713

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to improper limits for number of events driver domains could send to other guest VMs. A local user can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Module for Realtime: 15-SP3

SUSE MicroOS: 5.1

kernel-source-rt: before 5.3.18-68.1

kernel-devel-rt: before 5.3.18-68.1

ocfs2-kmp-rt-debuginfo: before 5.3.18-68.1

ocfs2-kmp-rt: before 5.3.18-68.1

kernel-syms-rt: before 5.3.18-68.1

kernel-rt_debug-devel-debuginfo: before 5.3.18-68.1

kernel-rt_debug-devel: before 5.3.18-68.1

kernel-rt_debug-debugsource: before 5.3.18-68.1

kernel-rt_debug-debuginfo: before 5.3.18-68.1

kernel-rt-devel-debuginfo: before 5.3.18-68.1

kernel-rt-devel: before 5.3.18-68.1

gfs2-kmp-rt-debuginfo: before 5.3.18-68.1

gfs2-kmp-rt: before 5.3.18-68.1

dlm-kmp-rt-debuginfo: before 5.3.18-68.1

dlm-kmp-rt: before 5.3.18-68.1

cluster-md-kmp-rt-debuginfo: before 5.3.18-68.1

cluster-md-kmp-rt: before 5.3.18-68.1

kernel-rt-debugsource: before 5.3.18-68.1

kernel-rt-debuginfo: before 5.3.18-68.1

kernel-rt: before 5.3.18-68.1

CPE2.3 External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220079-1/


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) Improper Resource Shutdown or Release

EUVDB-ID: #VU63583

Risk: Medium

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

CVE-ID: CVE-2021-28714

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

Exploit availability: No

Description

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

The vulnerability exists due to incoming data packets for a guest in the Linux kernel's netback driver are buffered until the guest is ready to process them. A remote user can use a UDP connection on a fast interface to trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Module for Realtime: 15-SP3

SUSE MicroOS: 5.1

kernel-source-rt: before 5.3.18-68.1

kernel-devel-rt: before 5.3.18-68.1

ocfs2-kmp-rt-debuginfo: before 5.3.18-68.1

ocfs2-kmp-rt: before 5.3.18-68.1

kernel-syms-rt: before 5.3.18-68.1

kernel-rt_debug-devel-debuginfo: before 5.3.18-68.1

kernel-rt_debug-devel: before 5.3.18-68.1

kernel-rt_debug-debugsource: before 5.3.18-68.1

kernel-rt_debug-debuginfo: before 5.3.18-68.1

kernel-rt-devel-debuginfo: before 5.3.18-68.1

kernel-rt-devel: before 5.3.18-68.1

gfs2-kmp-rt-debuginfo: before 5.3.18-68.1

gfs2-kmp-rt: before 5.3.18-68.1

dlm-kmp-rt-debuginfo: before 5.3.18-68.1

dlm-kmp-rt: before 5.3.18-68.1

cluster-md-kmp-rt-debuginfo: before 5.3.18-68.1

cluster-md-kmp-rt: before 5.3.18-68.1

kernel-rt-debugsource: before 5.3.18-68.1

kernel-rt-debuginfo: before 5.3.18-68.1

kernel-rt: before 5.3.18-68.1

CPE2.3 External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220079-1/


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

7) Improper Resource Shutdown or Release

EUVDB-ID: #VU63584

Risk: Medium

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

CVE-ID: CVE-2021-28715

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

Exploit availability: No

Description

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

The vulnerability exists due to incoming data packets for a guest in the Linux kernel's netback driver are buffered until the guest is ready to process them. A remote user can use a UDP connection on a fast interface to trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Module for Realtime: 15-SP3

SUSE MicroOS: 5.1

kernel-source-rt: before 5.3.18-68.1

kernel-devel-rt: before 5.3.18-68.1

ocfs2-kmp-rt-debuginfo: before 5.3.18-68.1

ocfs2-kmp-rt: before 5.3.18-68.1

kernel-syms-rt: before 5.3.18-68.1

kernel-rt_debug-devel-debuginfo: before 5.3.18-68.1

kernel-rt_debug-devel: before 5.3.18-68.1

kernel-rt_debug-debugsource: before 5.3.18-68.1

kernel-rt_debug-debuginfo: before 5.3.18-68.1

kernel-rt-devel-debuginfo: before 5.3.18-68.1

kernel-rt-devel: before 5.3.18-68.1

gfs2-kmp-rt-debuginfo: before 5.3.18-68.1

gfs2-kmp-rt: before 5.3.18-68.1

dlm-kmp-rt-debuginfo: before 5.3.18-68.1

dlm-kmp-rt: before 5.3.18-68.1

cluster-md-kmp-rt-debuginfo: before 5.3.18-68.1

cluster-md-kmp-rt: before 5.3.18-68.1

kernel-rt-debugsource: before 5.3.18-68.1

kernel-rt-debuginfo: before 5.3.18-68.1

kernel-rt: before 5.3.18-68.1

CPE2.3 External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220079-1/


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

8) Input validation error

EUVDB-ID: #VU87773

Risk: Low

CVSSv4.0: [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-2021-33098

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input. 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

SUSE Linux Enterprise Module for Realtime: 15-SP3

SUSE MicroOS: 5.1

kernel-source-rt: before 5.3.18-68.1

kernel-devel-rt: before 5.3.18-68.1

ocfs2-kmp-rt-debuginfo: before 5.3.18-68.1

ocfs2-kmp-rt: before 5.3.18-68.1

kernel-syms-rt: before 5.3.18-68.1

kernel-rt_debug-devel-debuginfo: before 5.3.18-68.1

kernel-rt_debug-devel: before 5.3.18-68.1

kernel-rt_debug-debugsource: before 5.3.18-68.1

kernel-rt_debug-debuginfo: before 5.3.18-68.1

kernel-rt-devel-debuginfo: before 5.3.18-68.1

kernel-rt-devel: before 5.3.18-68.1

gfs2-kmp-rt-debuginfo: before 5.3.18-68.1

gfs2-kmp-rt: before 5.3.18-68.1

dlm-kmp-rt-debuginfo: before 5.3.18-68.1

dlm-kmp-rt: before 5.3.18-68.1

cluster-md-kmp-rt-debuginfo: before 5.3.18-68.1

cluster-md-kmp-rt: before 5.3.18-68.1

kernel-rt-debugsource: before 5.3.18-68.1

kernel-rt-debuginfo: before 5.3.18-68.1

kernel-rt: before 5.3.18-68.1

CPE2.3 External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220079-1/


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.

9) Race condition

EUVDB-ID: #VU81665

Risk: Low

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

CVE-ID: CVE-2021-4001

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

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

The vulnerability exists due to a race condition in kernel/bpf/syscall.c in Linux kernel ebpf. A local user can exploit the race between bpf_map_update_elem and bpf_map_freeze and modify the frozen mapped address space.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Module for Realtime: 15-SP3

SUSE MicroOS: 5.1

kernel-source-rt: before 5.3.18-68.1

kernel-devel-rt: before 5.3.18-68.1

ocfs2-kmp-rt-debuginfo: before 5.3.18-68.1

ocfs2-kmp-rt: before 5.3.18-68.1

kernel-syms-rt: before 5.3.18-68.1

kernel-rt_debug-devel-debuginfo: before 5.3.18-68.1

kernel-rt_debug-devel: before 5.3.18-68.1

kernel-rt_debug-debugsource: before 5.3.18-68.1

kernel-rt_debug-debuginfo: before 5.3.18-68.1

kernel-rt-devel-debuginfo: before 5.3.18-68.1

kernel-rt-devel: before 5.3.18-68.1

gfs2-kmp-rt-debuginfo: before 5.3.18-68.1

gfs2-kmp-rt: before 5.3.18-68.1

dlm-kmp-rt-debuginfo: before 5.3.18-68.1

dlm-kmp-rt: before 5.3.18-68.1

cluster-md-kmp-rt-debuginfo: before 5.3.18-68.1

cluster-md-kmp-rt: before 5.3.18-68.1

kernel-rt-debugsource: before 5.3.18-68.1

kernel-rt-debuginfo: before 5.3.18-68.1

kernel-rt: before 5.3.18-68.1

CPE2.3 External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220079-1/


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.

10) Memory leak

EUVDB-ID: #VU63836

Risk: Low

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

CVE-ID: CVE-2021-4002

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due memory leak in the Linux kernel's hugetlbfs memory usage. A local user can force the application to leak memory and gain access to sensitive information.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Module for Realtime: 15-SP3

SUSE MicroOS: 5.1

kernel-source-rt: before 5.3.18-68.1

kernel-devel-rt: before 5.3.18-68.1

ocfs2-kmp-rt-debuginfo: before 5.3.18-68.1

ocfs2-kmp-rt: before 5.3.18-68.1

kernel-syms-rt: before 5.3.18-68.1

kernel-rt_debug-devel-debuginfo: before 5.3.18-68.1

kernel-rt_debug-devel: before 5.3.18-68.1

kernel-rt_debug-debugsource: before 5.3.18-68.1

kernel-rt_debug-debuginfo: before 5.3.18-68.1

kernel-rt-devel-debuginfo: before 5.3.18-68.1

kernel-rt-devel: before 5.3.18-68.1

gfs2-kmp-rt-debuginfo: before 5.3.18-68.1

gfs2-kmp-rt: before 5.3.18-68.1

dlm-kmp-rt-debuginfo: before 5.3.18-68.1

dlm-kmp-rt: before 5.3.18-68.1

cluster-md-kmp-rt-debuginfo: before 5.3.18-68.1

cluster-md-kmp-rt: before 5.3.18-68.1

kernel-rt-debugsource: before 5.3.18-68.1

kernel-rt-debuginfo: before 5.3.18-68.1

kernel-rt: before 5.3.18-68.1

CPE2.3 External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220079-1/


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.

11) Out-of-bounds write

EUVDB-ID: #VU62485

Risk: Low

CVSSv4.0: [CVSS:4.0/AV:P/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-2021-43975

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 within the hw_atl_utils_fw_rpc_wait() function in drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_utils.c in Linux kernel. A local user can attach a specially crafted device to the system, 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

SUSE Linux Enterprise Module for Realtime: 15-SP3

SUSE MicroOS: 5.1

kernel-source-rt: before 5.3.18-68.1

kernel-devel-rt: before 5.3.18-68.1

ocfs2-kmp-rt-debuginfo: before 5.3.18-68.1

ocfs2-kmp-rt: before 5.3.18-68.1

kernel-syms-rt: before 5.3.18-68.1

kernel-rt_debug-devel-debuginfo: before 5.3.18-68.1

kernel-rt_debug-devel: before 5.3.18-68.1

kernel-rt_debug-debugsource: before 5.3.18-68.1

kernel-rt_debug-debuginfo: before 5.3.18-68.1

kernel-rt-devel-debuginfo: before 5.3.18-68.1

kernel-rt-devel: before 5.3.18-68.1

gfs2-kmp-rt-debuginfo: before 5.3.18-68.1

gfs2-kmp-rt: before 5.3.18-68.1

dlm-kmp-rt-debuginfo: before 5.3.18-68.1

dlm-kmp-rt: before 5.3.18-68.1

cluster-md-kmp-rt-debuginfo: before 5.3.18-68.1

cluster-md-kmp-rt: before 5.3.18-68.1

kernel-rt-debugsource: before 5.3.18-68.1

kernel-rt-debuginfo: before 5.3.18-68.1

kernel-rt: before 5.3.18-68.1

CPE2.3 External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220079-1/


Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

12) Input validation error

EUVDB-ID: #VU61215

Risk: Low

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

CVE-ID: CVE-2021-43976

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows an attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input within the mwifiex_usb_recv() function in drivers/net/wireless/marvell/mwifiex/usb.c in Linux kernel. An attacker with physical access to the system can insert a specially crafted USB device and perform a denial of service (DoS) attack.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Module for Realtime: 15-SP3

SUSE MicroOS: 5.1

kernel-source-rt: before 5.3.18-68.1

kernel-devel-rt: before 5.3.18-68.1

ocfs2-kmp-rt-debuginfo: before 5.3.18-68.1

ocfs2-kmp-rt: before 5.3.18-68.1

kernel-syms-rt: before 5.3.18-68.1

kernel-rt_debug-devel-debuginfo: before 5.3.18-68.1

kernel-rt_debug-devel: before 5.3.18-68.1

kernel-rt_debug-debugsource: before 5.3.18-68.1

kernel-rt_debug-debuginfo: before 5.3.18-68.1

kernel-rt-devel-debuginfo: before 5.3.18-68.1

kernel-rt-devel: before 5.3.18-68.1

gfs2-kmp-rt-debuginfo: before 5.3.18-68.1

gfs2-kmp-rt: before 5.3.18-68.1

dlm-kmp-rt-debuginfo: before 5.3.18-68.1

dlm-kmp-rt: before 5.3.18-68.1

cluster-md-kmp-rt-debuginfo: before 5.3.18-68.1

cluster-md-kmp-rt: before 5.3.18-68.1

kernel-rt-debugsource: before 5.3.18-68.1

kernel-rt-debuginfo: before 5.3.18-68.1

kernel-rt: before 5.3.18-68.1

CPE2.3 External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220079-1/


Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

13) Information disclosure

EUVDB-ID: #VU63668

Risk: Medium

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

CVE-ID: CVE-2021-45485

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to an error in the IPv6 implementation in the Linux kernel. A remote attacker can gain access to sensitive information.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Module for Realtime: 15-SP3

SUSE MicroOS: 5.1

kernel-source-rt: before 5.3.18-68.1

kernel-devel-rt: before 5.3.18-68.1

ocfs2-kmp-rt-debuginfo: before 5.3.18-68.1

ocfs2-kmp-rt: before 5.3.18-68.1

kernel-syms-rt: before 5.3.18-68.1

kernel-rt_debug-devel-debuginfo: before 5.3.18-68.1

kernel-rt_debug-devel: before 5.3.18-68.1

kernel-rt_debug-debugsource: before 5.3.18-68.1

kernel-rt_debug-debuginfo: before 5.3.18-68.1

kernel-rt-devel-debuginfo: before 5.3.18-68.1

kernel-rt-devel: before 5.3.18-68.1

gfs2-kmp-rt-debuginfo: before 5.3.18-68.1

gfs2-kmp-rt: before 5.3.18-68.1

dlm-kmp-rt-debuginfo: before 5.3.18-68.1

dlm-kmp-rt: before 5.3.18-68.1

cluster-md-kmp-rt-debuginfo: before 5.3.18-68.1

cluster-md-kmp-rt: before 5.3.18-68.1

kernel-rt-debugsource: before 5.3.18-68.1

kernel-rt-debuginfo: before 5.3.18-68.1

kernel-rt: before 5.3.18-68.1

CPE2.3 External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220079-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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

14) Information disclosure

EUVDB-ID: #VU63577

Risk: Medium

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

CVE-ID: CVE-2021-45486

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to incorrect implementation of the IPv4 protocol in the Linux kernel. A remote attacker can disclose internal state in some situations.

Mitigation

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

Vulnerable software versions

SUSE Linux Enterprise Module for Realtime: 15-SP3

SUSE MicroOS: 5.1

kernel-source-rt: before 5.3.18-68.1

kernel-devel-rt: before 5.3.18-68.1

ocfs2-kmp-rt-debuginfo: before 5.3.18-68.1

ocfs2-kmp-rt: before 5.3.18-68.1

kernel-syms-rt: before 5.3.18-68.1

kernel-rt_debug-devel-debuginfo: before 5.3.18-68.1

kernel-rt_debug-devel: before 5.3.18-68.1

kernel-rt_debug-debugsource: before 5.3.18-68.1

kernel-rt_debug-debuginfo: before 5.3.18-68.1

kernel-rt-devel-debuginfo: before 5.3.18-68.1

kernel-rt-devel: before 5.3.18-68.1

gfs2-kmp-rt-debuginfo: before 5.3.18-68.1

gfs2-kmp-rt: before 5.3.18-68.1

dlm-kmp-rt-debuginfo: before 5.3.18-68.1

dlm-kmp-rt: before 5.3.18-68.1

cluster-md-kmp-rt-debuginfo: before 5.3.18-68.1

cluster-md-kmp-rt: before 5.3.18-68.1

kernel-rt-debugsource: before 5.3.18-68.1

kernel-rt-debuginfo: before 5.3.18-68.1

kernel-rt: before 5.3.18-68.1

CPE2.3 External links

http://www.suse.com/support/update/announcement/2022/suse-su-20220079-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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



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