Anolis OS update for kernel

Published: 2022-03-11 | Updated: 2025-03-29

Risk	High
Patch available	YES
Number of vulnerabilities	8
CVE-ID	CVE-2021-0920 CVE-2021-4154 CVE-2022-0330 CVE-2022-0435 CVE-2022-0492 CVE-2022-0516 CVE-2022-0847 CVE-2022-22942
CWE-ID	CWE-416 CWE-119 CWE-121 CWE-264 CWE-787 CWE-908
Exploitation vector	Network
Public exploit	Vulnerability #1 is being exploited in the wild. Public exploit code for vulnerability #2 is available. Public exploit code for vulnerability #5 is available. Vulnerability #7 is being exploited in the wild. Vulnerability #8 is being exploited in the wild.
Vulnerable software	Anolis OS Operating systems & Components / Operating system kernel-doc Operating systems & Components / Operating system package or component perf Operating systems & Components / Operating system package or component kernel-tools-libs-devel Operating systems & Components / Operating system package or component kernel-tools-libs Operating systems & Components / Operating system package or component kernel-tools Operating systems & Components / Operating system package or component kernel-modules-extra Operating systems & Components / Operating system package or component kernel-modules Operating systems & Components / Operating system package or component kernel-headers Operating systems & Components / Operating system package or component kernel-devel Operating systems & Components / Operating system package or component kernel-debug-modules-extra Operating systems & Components / Operating system package or component kernel-debug-modules Operating systems & Components / Operating system package or component kernel-debug-devel Operating systems & Components / Operating system package or component kernel-debug-core Operating systems & Components / Operating system package or component kernel-debug Operating systems & Components / Operating system package or component kernel-cross-headers Operating systems & Components / Operating system package or component kernel-core Operating systems & Components / Operating system package or component kernel Operating systems & Components / Operating system package or component bpftool Operating systems & Components / Operating system package or component
Vendor	OpenAnolis

Security Bulletin

This security bulletin contains information about 8 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU59811

Risk: Low

CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear]

CVE-ID: CVE-2021-0920

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error within the unix_scm_to_skb() function of af_unix.c in Linux kernel. A local user can run a specially crafted program to trigger a race condition and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

kernel-doc: before 4.18.0-348.20.1

perf: before 4.18.0-348.20.1

kernel-tools-libs-devel: before 4.18.0-348.20.1

kernel-tools-libs: before 4.18.0-348.20.1

kernel-tools: before 4.18.0-348.20.1

kernel-modules-extra: before 4.18.0-348.20.1

kernel-modules: before 4.18.0-348.20.1

kernel-headers: before 4.18.0-348.20.1

kernel-devel: before 4.18.0-348.20.1

kernel-debug-modules-extra: before 4.18.0-348.20.1

kernel-debug-modules: before 4.18.0-348.20.1

kernel-debug-devel: before 4.18.0-348.20.1

kernel-debug-core: before 4.18.0-348.20.1

kernel-debug: before 4.18.0-348.20.1

kernel-cross-headers: before 4.18.0-348.20.1

kernel-core: before 4.18.0-348.20.1

kernel: before 4.18.0-348.20.1

bpftool: before 4.18.0-348.20.1

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0050

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?

Yes. This vulnerability is being exploited in the wild.

2) Use-after-free

EUVDB-ID: #VU59840

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-2021-4154

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

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

The vulnerability exists due to a use-after-free error within the cgroup1_parse_param() function in kernel/cgroup/cgroup-v1.c in Linux kernel's cgroup v1 parser. A local user can execute arbitrary code via the fsconfig syscall parameter leading to a container breakout.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

kernel-doc: before 4.18.0-348.20.1

perf: before 4.18.0-348.20.1

kernel-tools-libs-devel: before 4.18.0-348.20.1

kernel-tools-libs: before 4.18.0-348.20.1

kernel-tools: before 4.18.0-348.20.1

kernel-modules-extra: before 4.18.0-348.20.1

kernel-modules: before 4.18.0-348.20.1

kernel-headers: before 4.18.0-348.20.1

kernel-devel: before 4.18.0-348.20.1

kernel-debug-modules-extra: before 4.18.0-348.20.1

kernel-debug-modules: before 4.18.0-348.20.1

kernel-debug-devel: before 4.18.0-348.20.1

kernel-debug-core: before 4.18.0-348.20.1

kernel-debug: before 4.18.0-348.20.1

kernel-cross-headers: before 4.18.0-348.20.1

kernel-core: before 4.18.0-348.20.1

kernel: before 4.18.0-348.20.1

bpftool: before 4.18.0-348.20.1

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0050

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.

3) Buffer overflow

EUVDB-ID: #VU60988

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-2022-0330

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a random memory access flaw caused by a missing TLB flush in Linux kernel GPU i915 kernel driver functionality. A local user can execute arbitrary code on the system with elevated privileges.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

kernel-doc: before 4.18.0-348.20.1

perf: before 4.18.0-348.20.1

kernel-tools-libs-devel: before 4.18.0-348.20.1

kernel-tools-libs: before 4.18.0-348.20.1

kernel-tools: before 4.18.0-348.20.1

kernel-modules-extra: before 4.18.0-348.20.1

kernel-modules: before 4.18.0-348.20.1

kernel-headers: before 4.18.0-348.20.1

kernel-devel: before 4.18.0-348.20.1

kernel-debug-modules-extra: before 4.18.0-348.20.1

kernel-debug-modules: before 4.18.0-348.20.1

kernel-debug-devel: before 4.18.0-348.20.1

kernel-debug-core: before 4.18.0-348.20.1

kernel-debug: before 4.18.0-348.20.1

kernel-cross-headers: before 4.18.0-348.20.1

kernel-core: before 4.18.0-348.20.1

kernel: before 4.18.0-348.20.1

bpftool: before 4.18.0-348.20.1

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0050

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) Stack-based buffer overflow

EUVDB-ID: #VU61216

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-0435

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the Linux kernel networking module for the Transparent Inter-Process Communication (TIPC) protocol. A remote unauthenticated attacker can send specially crafted traffic to the system, trigger a stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires that the TIPC bearer is set up.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

kernel-doc: before 4.18.0-348.20.1

perf: before 4.18.0-348.20.1

kernel-tools-libs-devel: before 4.18.0-348.20.1

kernel-tools-libs: before 4.18.0-348.20.1

kernel-tools: before 4.18.0-348.20.1

kernel-modules-extra: before 4.18.0-348.20.1

kernel-modules: before 4.18.0-348.20.1

kernel-headers: before 4.18.0-348.20.1

kernel-devel: before 4.18.0-348.20.1

kernel-debug-modules-extra: before 4.18.0-348.20.1

kernel-debug-modules: before 4.18.0-348.20.1

kernel-debug-devel: before 4.18.0-348.20.1

kernel-debug-core: before 4.18.0-348.20.1

kernel-debug: before 4.18.0-348.20.1

kernel-cross-headers: before 4.18.0-348.20.1

kernel-core: before 4.18.0-348.20.1

kernel: before 4.18.0-348.20.1

bpftool: before 4.18.0-348.20.1

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0050

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.

5) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU61245

Risk: Low

CVSSv4.0: 8.5 [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:A/U:Clear]

CVE-ID: CVE-2022-0492

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

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

The vulnerability exists due to a logic error within the cgroup_release_agent_write() function in kernel/cgroup/cgroup-v1.c. A local user can use the cgroups v1 release_agent feature to escalate privileges and bypass the namespace isolation.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

kernel-doc: before 4.18.0-348.20.1

perf: before 4.18.0-348.20.1

kernel-tools-libs-devel: before 4.18.0-348.20.1

kernel-tools-libs: before 4.18.0-348.20.1

kernel-tools: before 4.18.0-348.20.1

kernel-modules-extra: before 4.18.0-348.20.1

kernel-modules: before 4.18.0-348.20.1

kernel-headers: before 4.18.0-348.20.1

kernel-devel: before 4.18.0-348.20.1

kernel-debug-modules-extra: before 4.18.0-348.20.1

kernel-debug-modules: before 4.18.0-348.20.1

kernel-debug-devel: before 4.18.0-348.20.1

kernel-debug-core: before 4.18.0-348.20.1

kernel-debug: before 4.18.0-348.20.1

kernel-cross-headers: before 4.18.0-348.20.1

kernel-core: before 4.18.0-348.20.1

kernel: before 4.18.0-348.20.1

bpftool: before 4.18.0-348.20.1

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0050

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, a fully functional exploit for this vulnerability is available.

6) Out-of-bounds write

EUVDB-ID: #VU61247

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-2022-0516

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 kvm_s390_guest_sida_op() function in the arch/s390/kvm/kvm-s390.c in KVM for s390 in the Linux kernel. A local user can trigger an out-of-bounds write and escalate privileges on the system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

kernel-doc: before 4.18.0-348.20.1

perf: before 4.18.0-348.20.1

kernel-tools-libs-devel: before 4.18.0-348.20.1

kernel-tools-libs: before 4.18.0-348.20.1

kernel-tools: before 4.18.0-348.20.1

kernel-modules-extra: before 4.18.0-348.20.1

kernel-modules: before 4.18.0-348.20.1

kernel-headers: before 4.18.0-348.20.1

kernel-devel: before 4.18.0-348.20.1

kernel-debug-modules-extra: before 4.18.0-348.20.1

kernel-debug-modules: before 4.18.0-348.20.1

kernel-debug-devel: before 4.18.0-348.20.1

kernel-debug-core: before 4.18.0-348.20.1

kernel-debug: before 4.18.0-348.20.1

kernel-cross-headers: before 4.18.0-348.20.1

kernel-core: before 4.18.0-348.20.1

kernel: before 4.18.0-348.20.1

bpftool: before 4.18.0-348.20.1

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0050

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) Use of uninitialized resource

EUVDB-ID: #VU61110

Risk: Low

CVSSv4.0: 8.5 [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:A/U:Clear]

CVE-ID: CVE-2022-0847

CWE-ID: CWE-908 - Use of Uninitialized Resource

Exploit availability: Yes

Description

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

The vulnerability exists due to usage of an uninitialized resources. A local user can overwrite arbitrary file in the page cache, even if the file is read-only, and execute arbitrary code on the system with elevated privileges.

The vulnerability was dubbed Dirty Pipe.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

kernel-doc: before 4.18.0-348.20.1

perf: before 4.18.0-348.20.1

kernel-tools-libs-devel: before 4.18.0-348.20.1

kernel-tools-libs: before 4.18.0-348.20.1

kernel-tools: before 4.18.0-348.20.1

kernel-modules-extra: before 4.18.0-348.20.1

kernel-modules: before 4.18.0-348.20.1

kernel-headers: before 4.18.0-348.20.1

kernel-devel: before 4.18.0-348.20.1

kernel-debug-modules-extra: before 4.18.0-348.20.1

kernel-debug-modules: before 4.18.0-348.20.1

kernel-debug-devel: before 4.18.0-348.20.1

kernel-debug-core: before 4.18.0-348.20.1

kernel-debug: before 4.18.0-348.20.1

kernel-cross-headers: before 4.18.0-348.20.1

kernel-core: before 4.18.0-348.20.1

kernel: before 4.18.0-348.20.1

bpftool: before 4.18.0-348.20.1

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0050

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?

Yes. This vulnerability is being exploited in the wild.

8) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU61217

Risk: Low

CVSSv4.0: 8.5 [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:A/U:Clear]

CVE-ID: CVE-2022-22942

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

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

The vulnerability exists due to an error in the vmwgfx driver in Linux kernel. A local unprivileged user can gain access to files opened by other processes on the system through a dangling 'file' pointer.

Exploiting this vulnerability requires an attacker to have access to either /dev/dri/card0 or /dev/dri/rendererD128 and be able to issue an ioctl() on the resulting file descriptor.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

kernel-doc: before 4.18.0-348.20.1

perf: before 4.18.0-348.20.1

kernel-tools-libs-devel: before 4.18.0-348.20.1

kernel-tools-libs: before 4.18.0-348.20.1

kernel-tools: before 4.18.0-348.20.1

kernel-modules-extra: before 4.18.0-348.20.1

kernel-modules: before 4.18.0-348.20.1

kernel-headers: before 4.18.0-348.20.1

kernel-devel: before 4.18.0-348.20.1

kernel-debug-modules-extra: before 4.18.0-348.20.1

kernel-debug-modules: before 4.18.0-348.20.1

kernel-debug-devel: before 4.18.0-348.20.1

kernel-debug-core: before 4.18.0-348.20.1

kernel-debug: before 4.18.0-348.20.1

kernel-cross-headers: before 4.18.0-348.20.1

kernel-core: before 4.18.0-348.20.1

kernel: before 4.18.0-348.20.1

bpftool: before 4.18.0-348.20.1

CPE2.3

External links

https://anas.openanolis.cn/errata/detail/ANSA-2022:0050

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?

Yes. This vulnerability is being exploited in the wild.