openEuler 20.03 LTS update for kernel
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2020-15436 CVE-2020-15437 |
| CWE-ID | CWE-416 CWE-476 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
openEuler Operating systems & Components / Operating system bpftool-debuginfo Operating systems & Components / Operating system package or component bpftool 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-debuginfo Operating systems & Components / Operating system package or component python2-perf Operating systems & Components / Operating system package or component perf-debuginfo Operating systems & Components / Operating system package or component perf Operating systems & Components / Operating system package or component kernel-tools-devel Operating systems & Components / Operating system package or component kernel-tools-debuginfo Operating systems & Components / Operating system package or component kernel-tools Operating systems & Components / Operating system package or component kernel-source 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 kernel-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) Use-after-free
EUVDB-ID: #VU51897
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-2020-15436
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 fs/block_dev.c in the Linux kernel. A local user can run a specially crafted program to escalate privileges on the system.
Install updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS
bpftool-debuginfo: before 4.19.90-2010.2.0.0046
bpftool: before 4.19.90-2010.2.0.0046
python3-perf-debuginfo: before 4.19.90-2010.2.0.0046
python3-perf: before 4.19.90-2010.2.0.0046
python2-perf-debuginfo: before 4.19.90-2010.2.0.0046
python2-perf: before 4.19.90-2010.2.0.0046
perf-debuginfo: before 4.19.90-2010.2.0.0046
perf: before 4.19.90-2010.2.0.0046
kernel-tools-devel: before 4.19.90-2010.2.0.0046
kernel-tools-debuginfo: before 4.19.90-2010.2.0.0046
kernel-tools: before 4.19.90-2010.2.0.0046
kernel-source: before 4.19.90-2010.2.0.0046
kernel-devel: before 4.19.90-2010.2.0.0046
kernel-debugsource: before 4.19.90-2010.2.0.0046
kernel-debuginfo: before 4.19.90-2010.2.0.0046
kernel: before 4.19.90-2010.2.0.0046
CPE2.3- cpe:2.3:o:openeuler:openeuler:20.03:LTS:*:*:*:*:*:*
- cpe:2.3:a:openeuler:bpftool-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:bpftool:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:python3-perf-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:python3-perf:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:python2-perf-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:python2-perf:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:perf-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:perf:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-tools-devel:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-tools-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-tools:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-source:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-devel:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-debugsource:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel:*:*:*:*:*:openeuler:*:*
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2020-1096
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) Null pointer dereference
EUVDB-ID: #VU95685
Risk: Low
CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2020-15437
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a local privileged user to perform a denial of service (DoS) attack.
The Linux kernel before version 5.8 is vulnerable to a NULL pointer dereference in drivers/tty/serial/8250/8250_core.c:serial8250_isa_init_ports() that allows local users to cause a denial of service by using the p->serial_in pointer which uninitialized.
MitigationInstall updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS
bpftool-debuginfo: before 4.19.90-2010.2.0.0046
bpftool: before 4.19.90-2010.2.0.0046
python3-perf-debuginfo: before 4.19.90-2010.2.0.0046
python3-perf: before 4.19.90-2010.2.0.0046
python2-perf-debuginfo: before 4.19.90-2010.2.0.0046
python2-perf: before 4.19.90-2010.2.0.0046
perf-debuginfo: before 4.19.90-2010.2.0.0046
perf: before 4.19.90-2010.2.0.0046
kernel-tools-devel: before 4.19.90-2010.2.0.0046
kernel-tools-debuginfo: before 4.19.90-2010.2.0.0046
kernel-tools: before 4.19.90-2010.2.0.0046
kernel-source: before 4.19.90-2010.2.0.0046
kernel-devel: before 4.19.90-2010.2.0.0046
kernel-debugsource: before 4.19.90-2010.2.0.0046
kernel-debuginfo: before 4.19.90-2010.2.0.0046
kernel: before 4.19.90-2010.2.0.0046
CPE2.3- cpe:2.3:o:openeuler:openeuler:20.03:LTS:*:*:*:*:*:*
- cpe:2.3:a:openeuler:bpftool-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:bpftool:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:python3-perf-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:python3-perf:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:python2-perf-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:python2-perf:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:perf-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:perf:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-tools-devel:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-tools-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-tools:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-source:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-devel:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-debugsource:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel:*:*:*:*:*:openeuler:*:*
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2020-1096
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.
