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CVE-2021-33631

22
FAUCET Score

CVE-2021-33631 is an Integer Overflow or Wraparound vulnerability affecting the openEuler kernel's filesystem modules, specifically versions 4.19.90 before 4.19.90-2401.3 and 5.10.0-60.18.0 before 5.10.0-183.0.0. Rated 7.8 HIGH, this local vulnerability (AV:L) allows an attacker with low privileges (PR:L) to achieve high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.19.90, < 4.19.90-2401.3CPE matchmatch criteria
cpe:2.3:o:openatom:openeuler:*:*:*:*:-:-:*:*
>= 4.19.90, < 4.19.90-2401.3CPE matchmatch criteria
cpe:2.3:o:openatom:openeuler:*:*:*:*:-:linux:*:*
>= 5.10.0-60.18.0, < 5.10.0-183.0.0CPE matchmatch criteria
cpe:2.3:o:openatom:openeuler:*:*:*:*:-:-:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 68th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (27)

redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/logging-view-plugin-rhel8:v5.7.13-3
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt-0:4.18.0-513.24.1.rt7.326.el8_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-513.24.1.el8_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Extended Update SupportFixed in: kernel-0:4.18.0-372.98.1.el8_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Extended Update SupportFixed in: kernel-0:4.18.0-477.55.1.el8_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-284.11.1.el9_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt-0:5.14.0-284.11.1.rt14.296.el9_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.0 Extended Update SupportFixed in: kernel-0:5.14.0-70.97.1.el9_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.0 Extended Update SupportFixed in: kernel-rt-0:5.14.0-70.97.1.rt21.169.el9_0
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-372.98.1.el8_6
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/cluster-logging-operator-bundle:v5.7.13-16
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/cluster-logging-rhel8-operator:v5.7.13-7
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/elasticsearch6-rhel8:v6.8.1-408
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/elasticsearch-operator-bundle:v5.7.13-19
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/elasticsearch-proxy-rhel8:v1.0.0-480
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/elasticsearch-rhel8-operator:v5.7.13-9
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/eventrouter-rhel8:v0.4.0-248
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/fluentd-rhel8:v1.14.6-215
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/kibana6-rhel8:v6.8.1-431
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/log-file-metric-exporter-rhel8:v1.1.0-228
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/logging-curator5-rhel8:v5.8.1-471
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/logging-loki-rhel8:v2.9.6-15
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/loki-operator-bundle:v5.7.13-27
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/loki-rhel8-operator:v5.7.13-12
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/lokistack-gateway-rhel8:v0.1.0-527
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/opa-openshift-rhel8:v0.1.0-225
View patch
redhatpatch availablevia redhat_api
Product: RHOL-5.7-RHEL-8Fixed in: openshift-logging/vector-rhel8:v0.28.1-57
View patch

Vendor Advisories (1)

redhatCVE-2021-33631Moderate

kernel: ext4: kernel bug in ext4_write_inline_data_end()

Jan 18, 2024

References

gitee.com / src-openeuler/kernel/pulls/1389
Release Notes
gitee.com / src-openeuler/kernel/pulls/1396
Release Notes
git.kernel.org / pub/scm/linux/kernel/git/torvalds/linux.git/commit
Patch
openeuler.org / zh/security/security-bulletins/detail
Vendor Advisory
openeuler.org / zh/security/security-bulletins/detail
Vendor Advisory
openeuler.org / zh/security/security-bulletins/detail
Vendor Advisory
openeuler.org / zh/security/security-bulletins/detail
Vendor Advisory
openeuler.org / zh/security/security-bulletins/detail
Vendor Advisory
openeuler.org / zh/security/security-bulletins/detail
Vendor Advisory
openwall.com / lists/oss-security/2024/01/30/10
openwall.com / lists/oss-security/2024/01/30/3
openwall.com / lists/oss-security/2024/01/30/4
openwall.com / lists/oss-security/2024/01/30/5
openwall.com / lists/oss-security/2024/01/30/9
openwall.com / lists/oss-security/2024/01/31/2
openwall.com / lists/oss-security/2024/01/31/3
openwall.com / lists/oss-security/2024/02/02/6
openwall.com / lists/oss-security/2024/02/02/9
openwall.com / lists/oss-security/2024/02/03/1