openEuler 20.03 LTS SP3 update for kernel

Published: 2022-10-21 | Updated: 2024-06-07

Risk	Low
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2022-20421 CVE-2022-20422 CVE-2022-42703 CVE-2022-41850
CWE-ID	CWE-362 CWE-787 CWE-416
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #3 is available.
Vulnerable software	openEuler Operating systems & Components / Operating system perf Operating systems & Components / Operating system package or component perf-debuginfo Operating systems & Components / Operating system package or component kernel-tools-debuginfo Operating systems & Components / Operating system package or component kernel-debugsource Operating systems & Components / Operating system package or component bpftool Operating systems & Components / Operating system package or component kernel-tools-devel Operating systems & Components / Operating system package or component kernel-debuginfo Operating systems & Components / Operating system package or component kernel-source Operating systems & Components / Operating system package or component python3-perf-debuginfo Operating systems & Components / Operating system package or component python3-perf Operating systems & Components / Operating system package or component python2-perf Operating systems & Components / Operating system package or component kernel-tools Operating systems & Components / Operating system package or component kernel-devel Operating systems & Components / Operating system package or component bpftool-debuginfo Operating systems & Components / Operating system package or component python2-perf-debuginfo Operating systems & Components / Operating system package or component kernel Operating systems & Components / Operating system package or component
Vendor	openEuler

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Race condition

EUVDB-ID: #VU67865

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-2022-20421

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

Exploit availability: Yes

Description

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

The vulnerability exists due to a race condition within the Binder driver in Android kernel in drivers/android/binder.c. A local application can exploit the race to trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP3

perf: before 4.19.90-2210.3.0.0172

perf-debuginfo: before 4.19.90-2210.3.0.0172

kernel-tools-debuginfo: before 4.19.90-2210.3.0.0172

kernel-debugsource: before 4.19.90-2210.3.0.0172

bpftool: before 4.19.90-2210.3.0.0172

kernel-tools-devel: before 4.19.90-2210.3.0.0172

kernel-debuginfo: before 4.19.90-2210.3.0.0172

kernel-source: before 4.19.90-2210.3.0.0172

python3-perf-debuginfo: before 4.19.90-2210.3.0.0172

python3-perf: before 4.19.90-2210.3.0.0172

python2-perf: before 4.19.90-2210.3.0.0172

kernel-tools: before 4.19.90-2210.3.0.0172

kernel-devel: before 4.19.90-2210.3.0.0172

bpftool-debuginfo: before 4.19.90-2210.3.0.0172

python2-perf-debuginfo: before 4.19.90-2210.3.0.0172

kernel: before 4.19.90-2210.3.0.0172

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-2014

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.

2) Out-of-bounds write

EUVDB-ID: #VU67866

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-2022-20422

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within emulation_proc_handler() in armv8 emulation in arch/arm64/kernel/armv8_deprecated.c. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP3

perf: before 4.19.90-2210.3.0.0172

perf-debuginfo: before 4.19.90-2210.3.0.0172

kernel-tools-debuginfo: before 4.19.90-2210.3.0.0172

kernel-debugsource: before 4.19.90-2210.3.0.0172

bpftool: before 4.19.90-2210.3.0.0172

kernel-tools-devel: before 4.19.90-2210.3.0.0172

kernel-debuginfo: before 4.19.90-2210.3.0.0172

kernel-source: before 4.19.90-2210.3.0.0172

python3-perf-debuginfo: before 4.19.90-2210.3.0.0172

python3-perf: before 4.19.90-2210.3.0.0172

python2-perf: before 4.19.90-2210.3.0.0172

kernel-tools: before 4.19.90-2210.3.0.0172

kernel-devel: before 4.19.90-2210.3.0.0172

bpftool-debuginfo: before 4.19.90-2210.3.0.0172

python2-perf-debuginfo: before 4.19.90-2210.3.0.0172

kernel: before 4.19.90-2210.3.0.0172

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-2014

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) Use-after-free

EUVDB-ID: #VU69297

Risk: Low

CVSSv4.0: 5.4 [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:P/U:Clear]

CVE-ID: CVE-2022-42703

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

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

The vulnerability exists due to a use-after-free error within the mm/rmap.c in the Linux kernel, related to leaf anon_vma double reuse. A local user can trigger a use-after-free error and crash the kernel.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP3

perf: before 4.19.90-2210.3.0.0172

perf-debuginfo: before 4.19.90-2210.3.0.0172

kernel-tools-debuginfo: before 4.19.90-2210.3.0.0172

kernel-debugsource: before 4.19.90-2210.3.0.0172

bpftool: before 4.19.90-2210.3.0.0172

kernel-tools-devel: before 4.19.90-2210.3.0.0172

kernel-debuginfo: before 4.19.90-2210.3.0.0172

kernel-source: before 4.19.90-2210.3.0.0172

python3-perf-debuginfo: before 4.19.90-2210.3.0.0172

python3-perf: before 4.19.90-2210.3.0.0172

python2-perf: before 4.19.90-2210.3.0.0172

kernel-tools: before 4.19.90-2210.3.0.0172

kernel-devel: before 4.19.90-2210.3.0.0172

bpftool-debuginfo: before 4.19.90-2210.3.0.0172

python2-perf-debuginfo: before 4.19.90-2210.3.0.0172

kernel: before 4.19.90-2210.3.0.0172

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-2014

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.

4) Race condition

EUVDB-ID: #VU69792

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-2022-41850

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 perform a denial of service (DoS) attack.

The vulnerability exists due to a race condition within the roccat_report_event() function in drivers/hid/hid-roccat.c. A local user can trigger a use-after-free error and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP3

perf: before 4.19.90-2210.3.0.0172

perf-debuginfo: before 4.19.90-2210.3.0.0172

kernel-tools-debuginfo: before 4.19.90-2210.3.0.0172

kernel-debugsource: before 4.19.90-2210.3.0.0172

bpftool: before 4.19.90-2210.3.0.0172

kernel-tools-devel: before 4.19.90-2210.3.0.0172

kernel-debuginfo: before 4.19.90-2210.3.0.0172

kernel-source: before 4.19.90-2210.3.0.0172

python3-perf-debuginfo: before 4.19.90-2210.3.0.0172

python3-perf: before 4.19.90-2210.3.0.0172

python2-perf: before 4.19.90-2210.3.0.0172

kernel-tools: before 4.19.90-2210.3.0.0172

kernel-devel: before 4.19.90-2210.3.0.0172

bpftool-debuginfo: before 4.19.90-2210.3.0.0172

python2-perf-debuginfo: before 4.19.90-2210.3.0.0172

kernel: before 4.19.90-2210.3.0.0172

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-2014

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.