openEuler update for kernel
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-44879 |
| CWE-ID | 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 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 kernel-source Operating systems & Components / Operating system package or component kernel-debugsource Operating systems & Components / Operating system package or component kernel-tools-debuginfo Operating systems & Components / Operating system package or component perf-debuginfo Operating systems & Components / Operating system package or component kernel-debuginfo Operating systems & Components / Operating system package or component python2-perf Operating systems & Components / Operating system package or component kernel-devel Operating systems & Components / Operating system package or component perf Operating systems & Components / Operating system package or component kernel-tools Operating systems & Components / Operating system package or component kernel-tools-devel Operating systems & Components / Operating system package or component bpftool 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 one low risk vulnerability.
1) NULL pointer dereference
EUVDB-ID: #VU62483
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-2021-44879
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the gc_data_segment() function in fs/f2fs/gc.c. A local user can mount a specially crafted f2fs image, trigger a NULL pointer dereference and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS SP1 - 20.03 LTS SP3
bpftool-debuginfo: before 4.19.90-2203.2.0.0140
python3-perf-debuginfo: before 4.19.90-2203.2.0.0140
python3-perf: before 4.19.90-2203.2.0.0140
python2-perf-debuginfo: before 4.19.90-2203.2.0.0140
kernel-source: before 4.19.90-2203.2.0.0140
kernel-debugsource: before 4.19.90-2203.2.0.0140
kernel-tools-debuginfo: before 4.19.90-2203.2.0.0140
perf-debuginfo: before 4.19.90-2203.2.0.0140
kernel-debuginfo: before 4.19.90-2203.2.0.0140
python2-perf: before 4.19.90-2203.2.0.0140
kernel-devel: before 4.19.90-2203.2.0.0140
perf: before 4.19.90-2203.2.0.0140
kernel-tools: before 4.19.90-2203.2.0.0140
kernel-tools-devel: before 4.19.90-2203.2.0.0140
bpftool: before 4.19.90-2203.2.0.0140
kernel: before 4.19.90-2203.2.0.0140
CPE2.3- cpe:2.3:o:openeuler:openeuler:20.03:LTS SP1:*:*:*:*:*:*
- cpe:2.3:o:openeuler:openeuler:20.03:LTS SP2:*:*:*:*:*:*
- cpe:2.3:o:openeuler:openeuler:20.03:LTS SP3:*:*:*:*:*:*
- cpe:2.3:a:openeuler:bpftool-debuginfo:*:*:*:*:*: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:kernel-source:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-debugsource:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-tools-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:perf-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-debuginfo:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:python2-perf:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-devel:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:perf:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-tools:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel-tools-devel:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:bpftool:*:*:*:*:*:openeuler:*:*
- cpe:2.3:a:openeuler:kernel:*:*:*:*:*:openeuler:*:*
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1574
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.
