Security readout for executives and security teams
This is a local denial-of-service risk in the openEuler Linux kernel networking scheduler. A low-privileged local user may be able to trigger a kernel NULL pointer dereference, causing availability impact. Sources do not support remote exploitation or data theft. Exposure is most likely on openEuler systems running kernel package 4.19.90 earlier than 4.19.90-2401.3, especially multi-user servers, shared build hosts, or container platforms where untrusted local users can reach kernel networking functionality. Treat as a planned but real availability risk. It is not supported as remotely exploitable in the provided sources, but local denial of service can still matter on shared infrastructure. Patch during the next appropriate kernel maintenance window, faster for multi-tenant systems. Mitigation focus: Upgrade affected openEuler kernel packages to 4.19.90-2401.3 or later vendor guidance.; Prioritize shared, multi-user, and tenant-exposed Linux hosts.; Restrict untrusted local shell, container, or workload access until patched..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-476: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-33630 mapping review
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Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1030CVE reference
- https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2024-1031CVE reference
- https://gitee.com/src-openeuler/kernel/pulls/1389CVE reference
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e8b9bfa110896f95d602d8c98d5f9d67e41d78cCVE reference
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlCVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.