openEuler 20.03 LTS SP3 update for kernel

Published: 2022-08-19

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-36123 CVE-2022-20369
CWE-ID	CWE-264 CWE-787
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	openEuler Operating systems & Components / Operating system kernel-devel Operating systems & Components / Operating system package or component python2-perf 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 python3-perf Operating systems & Components / Operating system package or component kernel-debuginfo Operating systems & Components / Operating system package or component kernel-tools-debuginfo Operating systems & Components / Operating system package or component bpftool Operating systems & Components / Operating system package or component python2-perf-debuginfo Operating systems & Components / Operating system package or component kernel-debugsource Operating systems & Components / Operating system package or component kernel-tools-devel Operating systems & Components / Operating system package or component perf-debuginfo Operating systems & Components / Operating system package or component kernel-source Operating systems & Components / Operating system package or component kernel-tools Operating systems & Components / Operating system package or component bpftool-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 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU66808

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-2022-36123

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

Exploit availability: No

Description

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

The vulnerability exists due to Linux kernel lacks a certain clear operation for the block starting symbol (.bss). A local user on the Xen PV guest OS can perform a denial of service attack or escalate privileges on the guest OS.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP3

kernel-devel: before 4.19.90-2208.4.0.0163

python2-perf: before 4.19.90-2208.4.0.0163

python3-perf-debuginfo: before 4.19.90-2208.4.0.0163

perf: before 4.19.90-2208.4.0.0163

python3-perf: before 4.19.90-2208.4.0.0163

kernel-debuginfo: before 4.19.90-2208.4.0.0163

kernel-tools-debuginfo: before 4.19.90-2208.4.0.0163

bpftool: before 4.19.90-2208.4.0.0163

python2-perf-debuginfo: before 4.19.90-2208.4.0.0163

kernel-debugsource: before 4.19.90-2208.4.0.0163

kernel-tools-devel: before 4.19.90-2208.4.0.0163

perf-debuginfo: before 4.19.90-2208.4.0.0163

kernel-source: before 4.19.90-2208.4.0.0163

kernel-tools: before 4.19.90-2208.4.0.0163

bpftool-debuginfo: before 4.19.90-2208.4.0.0163

kernel: before 4.19.90-2208.4.0.0163

CPE2.3

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1844

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) Out-of-bounds write

EUVDB-ID: #VU67474