Anolis OS update for kernel(RHCK)4.18 (Anolis OS 8.2)
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2020-36385 CVE-2021-20317 |
| CWE-ID | CWE-416 CWE-665 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
Anolis OS Operating systems & Components / Operating system kernel-doc Operating systems & Components / Operating system package or component kernel-abi-whitelists Operating systems & Components / Operating system package or component python3-perf Operating systems & Components / Operating system package or component perf 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 2 vulnerabilities.
1) Use-after-free
EUVDB-ID: #VU58332
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-2020-36385
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in drivers/infiniband/core/ucma.c, because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called. A local user can run a specially crafted program to trigger the use-after-free error and execute arbitrary code with elevated privileges.
Install updates from vendor's repository.
Vulnerable software versionsAnolis OS: 8
kernel-doc: before 4.18.0-193.70.1
kernel-abi-whitelists: before 4.18.0-193.70.1
python3-perf: before 4.18.0-193.70.1
perf: before 4.18.0-193.70.1
kernel-tools-libs: before 4.18.0-193.70.1
kernel-tools: before 4.18.0-193.70.1
kernel-modules-extra: before 4.18.0-193.70.1
kernel-modules: before 4.18.0-193.70.1
kernel-headers: before 4.18.0-193.70.1
kernel-devel: before 4.18.0-193.70.1
kernel-debug-modules-extra: before 4.18.0-193.70.1
kernel-debug-modules: before 4.18.0-193.70.1
kernel-debug-devel: before 4.18.0-193.70.1
kernel-debug-core: before 4.18.0-193.70.1
kernel-debug: before 4.18.0-193.70.1
kernel-cross-headers: before 4.18.0-193.70.1
kernel-core: before 4.18.0-193.70.1
kernel: before 4.18.0-193.70.1
bpftool: before 4.18.0-193.70.1
CPE2.3- cpe:2.3:o:openanolis:anolis_os:8:*:*:*:*:*:*:*
- cpe:2.3:a:openanolis:kernel-doc:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-abi-whitelists:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:python3-perf:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:perf:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-tools-libs:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-tools:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-modules-extra:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-modules:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-headers:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-devel:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-debug-modules-extra:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-debug-modules:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-debug-devel:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-debug-core:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-debug:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-cross-headers:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-core:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:bpftool:*:*:*:*:*:anolis_os:*:*
https://anas.openanolis.cn/errata/detail/ANSA-2021:0177
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) Improper Initialization
EUVDB-ID: #VU58208
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-2021-20317
CWE-ID:
CWE-665 - Improper Initialization
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper initialization the Linux kernel. A corrupted timer tree causes the task wakeup to be missing in the timerqueue_add function in lib/timerqueue.c. A local user can run a specially crafted application to crash the kernel.
MitigationInstall updates from vendor's repository.
Vulnerable software versionsAnolis OS: 8
kernel-doc: before 4.18.0-193.70.1
kernel-abi-whitelists: before 4.18.0-193.70.1
python3-perf: before 4.18.0-193.70.1
perf: before 4.18.0-193.70.1
kernel-tools-libs: before 4.18.0-193.70.1
kernel-tools: before 4.18.0-193.70.1
kernel-modules-extra: before 4.18.0-193.70.1
kernel-modules: before 4.18.0-193.70.1
kernel-headers: before 4.18.0-193.70.1
kernel-devel: before 4.18.0-193.70.1
kernel-debug-modules-extra: before 4.18.0-193.70.1
kernel-debug-modules: before 4.18.0-193.70.1
kernel-debug-devel: before 4.18.0-193.70.1
kernel-debug-core: before 4.18.0-193.70.1
kernel-debug: before 4.18.0-193.70.1
kernel-cross-headers: before 4.18.0-193.70.1
kernel-core: before 4.18.0-193.70.1
kernel: before 4.18.0-193.70.1
bpftool: before 4.18.0-193.70.1
CPE2.3- cpe:2.3:o:openanolis:anolis_os:8:*:*:*:*:*:*:*
- cpe:2.3:a:openanolis:kernel-doc:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-abi-whitelists:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:python3-perf:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:perf:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-tools-libs:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-tools:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-modules-extra:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-modules:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-headers:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-devel:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-debug-modules-extra:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-debug-modules:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-debug-devel:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-debug-core:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-debug:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-cross-headers:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel-core:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:kernel:*:*:*:*:*:anolis_os:*:*
- cpe:2.3:a:openanolis:bpftool:*:*:*:*:*:anolis_os:*:*
https://anas.openanolis.cn/errata/detail/ANSA-2021:0177
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.
