openEuler 20.03 LTS SP3 update for kernel

Published: 2023-09-22

Risk	Low
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2022-45887 CVE-2023-20588 CVE-2023-21400 CVE-2023-4921
CWE-ID	CWE-362 CWE-369 CWE-20 CWE-416
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	openEuler Operating systems & Components / Operating system kernel-tools-devel Operating systems & Components / Operating system package or component kernel-tools-debuginfo Operating systems & Components / Operating system package or component kernel-debuginfo 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 kernel-debugsource Operating systems & Components / Operating system package or component perf-debuginfo Operating systems & Components / Operating system package or component bpftool Operating systems & Components / Operating system package or component python3-perf Operating systems & Components / Operating system package or component bpftool-debuginfo Operating systems & Components / Operating system package or component python3-perf-debuginfo Operating systems & Components / Operating system package or component perf Operating systems & Components / Operating system package or component python2-perf Operating systems & Components / Operating system package or component kernel-source 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: #VU75338

Risk: Low

CVSSv4.0: 1.9 [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-2022-45887

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 in drivers/media/usb/ttusb-dec/ttusb_dec.c in Linux kernel. A local user can exploit the race and crash the kernel.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP3

kernel-tools-devel: before 4.19.90-2309.4.0.0219

kernel-tools-debuginfo: before 4.19.90-2309.4.0.0219

kernel-debuginfo: before 4.19.90-2309.4.0.0219

kernel-tools: before 4.19.90-2309.4.0.0219

kernel-devel: before 4.19.90-2309.4.0.0219

kernel-debugsource: before 4.19.90-2309.4.0.0219

perf-debuginfo: before 4.19.90-2309.4.0.0219

bpftool: before 4.19.90-2309.4.0.0219

python3-perf: before 4.19.90-2309.4.0.0219

bpftool-debuginfo: before 4.19.90-2309.4.0.0219

python3-perf-debuginfo: before 4.19.90-2309.4.0.0219

perf: before 4.19.90-2309.4.0.0219

python2-perf: before 4.19.90-2309.4.0.0219

kernel-source: before 4.19.90-2309.4.0.0219

python2-perf-debuginfo: before 4.19.90-2309.4.0.0219

kernel: before 4.19.90-2309.4.0.0219

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1667

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: #VU79239

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-20588

CWE-ID: CWE-369 - Divide By Zero

Exploit availability: No

Description

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

The vulnerability exists due to a divide by zero error that can return speculative data. A local user can gain access to potentially sensitive information.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP3

kernel-tools-devel: before 4.19.90-2309.4.0.0219

kernel-tools-debuginfo: before 4.19.90-2309.4.0.0219

kernel-debuginfo: before 4.19.90-2309.4.0.0219

kernel-tools: before 4.19.90-2309.4.0.0219

kernel-devel: before 4.19.90-2309.4.0.0219

kernel-debugsource: before 4.19.90-2309.4.0.0219

perf-debuginfo: before 4.19.90-2309.4.0.0219

bpftool: before 4.19.90-2309.4.0.0219

python3-perf: before 4.19.90-2309.4.0.0219

bpftool-debuginfo: before 4.19.90-2309.4.0.0219

python3-perf-debuginfo: before 4.19.90-2309.4.0.0219

perf: before 4.19.90-2309.4.0.0219

python2-perf: before 4.19.90-2309.4.0.0219

kernel-source: before 4.19.90-2309.4.0.0219

python2-perf-debuginfo: before 4.19.90-2309.4.0.0219

kernel: before 4.19.90-2309.4.0.0219

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1667

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) Improper input validation

EUVDB-ID: #VU77993

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-2023-21400

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local application to execute arbitrary code.

The vulnerability exists due to improper input validation within the Kernel io_uring subcomponent in Kernel components. A local application can execute arbitrary code.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP3

kernel-tools-devel: before 4.19.90-2309.4.0.0219

kernel-tools-debuginfo: before 4.19.90-2309.4.0.0219

kernel-debuginfo: before 4.19.90-2309.4.0.0219

kernel-tools: before 4.19.90-2309.4.0.0219

kernel-devel: before 4.19.90-2309.4.0.0219

kernel-debugsource: before 4.19.90-2309.4.0.0219

perf-debuginfo: before 4.19.90-2309.4.0.0219

bpftool: before 4.19.90-2309.4.0.0219

python3-perf: before 4.19.90-2309.4.0.0219

bpftool-debuginfo: before 4.19.90-2309.4.0.0219

python3-perf-debuginfo: before 4.19.90-2309.4.0.0219

perf: before 4.19.90-2309.4.0.0219

python2-perf: before 4.19.90-2309.4.0.0219

kernel-source: before 4.19.90-2309.4.0.0219

python2-perf-debuginfo: before 4.19.90-2309.4.0.0219

kernel: before 4.19.90-2309.4.0.0219

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1667

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) Use-after-free

EUVDB-ID: #VU81693

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-2023-4921

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 in the qfq_dequeue() function within the the Linux kernel's net/sched: sch_qfq component. A local user can 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

kernel-tools-devel: before 4.19.90-2309.4.0.0219

kernel-tools-debuginfo: before 4.19.90-2309.4.0.0219

kernel-debuginfo: before 4.19.90-2309.4.0.0219

kernel-tools: before 4.19.90-2309.4.0.0219

kernel-devel: before 4.19.90-2309.4.0.0219

kernel-debugsource: before 4.19.90-2309.4.0.0219

perf-debuginfo: before 4.19.90-2309.4.0.0219

bpftool: before 4.19.90-2309.4.0.0219

python3-perf: before 4.19.90-2309.4.0.0219

bpftool-debuginfo: before 4.19.90-2309.4.0.0219

python3-perf-debuginfo: before 4.19.90-2309.4.0.0219

perf: before 4.19.90-2309.4.0.0219

python2-perf: before 4.19.90-2309.4.0.0219

kernel-source: before 4.19.90-2309.4.0.0219

python2-perf-debuginfo: before 4.19.90-2309.4.0.0219

kernel: before 4.19.90-2309.4.0.0219

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1667

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.