What is CVE-2021-33639?

CVE-2021-33639 is a high-severity vulnerability in Openatom Openeuler Kernel, classified under CWE-749. CVSS score: 7.5/10. Published 2023-03-08.

How severe is CVE-2021-33639?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Openatom Openeuler Kernel

CVE-2021-33639

REMAP cmd of SVM driver can be used to remap read only memory as read-write, then cause read only memory/file modified.

Published 2023-03-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (39.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Openatom Openeuler Kernel
Kernel — versions <=4.19.90-2211.4.0.0177, <=5.10.0-60.67.0.92

Weakness classification (CWE)

CWE-749

References

gitee.com/openeuler/kernel/commit/e4d0684a3ce68e7f8e11408121e791cd80312b27 (Permissions Required)

Frequently asked questions

What is CVE-2021-33639?: CVE-2021-33639 is a high-severity vulnerability in Openatom Openeuler Kernel, classified under CWE-749. CVSS score: 7.5/10. Published 2023-03-08.
How severe is CVE-2021-33639?: High severity. CVSS v3 base score is 7.5 out of 10.