Security readout for executives and security teams
Plain-English summary
This is a Linux kernel flaw in block cgroup accounting. A timing issue can corrupt an internal list while I/O statistics are being updated. The CVE rates impact as high because successful triggering could affect confidentiality, integrity, and availability on the local system.
Executive priority
Treat this as a high-priority Linux maintenance item for shared or production infrastructure. There is no source-backed evidence of active exploitation, but the kernel-level impact and no-privilege local vector justify timely patch validation.
Technical view
The bug is in blk-cgroup rstat flushing. A reordered write to ->lqueued versus a read of bisc->lnode.next can let __blkcg_rstat_flush() see an entry concurrently added by blk_cgroup_bio_start(), corrupting the local list. Upstream stable commits add a memory barrier.
Likely exposure
Exposure is most relevant to Linux systems running affected kernels with block cgroup functionality in use, especially multi-user, containerized, or workload-isolated hosts. The source bundle does not identify affected distributions or cloud images.
Exploitation context
The CVSS vector is local, low complexity, no privileges, and no user interaction. The bundle says KEV is false and provides no cited evidence of active exploitation or public exploit availability.
Researcher notes
The evidence points to a concurrency and memory-ordering defect in blk-cgroup accounting, fixed by a barrier. Source data is incomplete for distribution package status, exploitability constraints, and operational mitigations beyond applying fixed kernels.
Mitigation direction
- Update Linux kernels using vendor packages that include the referenced upstream stable fixes.
- Check distribution advisories for exact fixed package versions and reboot requirements.
- Prioritize shared hosts, container platforms, and systems using cgroup-based workload isolation.
- If immediate patching is delayed, follow vendor guidance for risk reduction.
Validation and detection
- Inventory Linux kernel versions across servers, containers hosts, and appliances.
- Map deployed kernels to vendor advisories for CVE-2024-38384.
- Confirm updated kernels include one of the referenced stable commits or vendor backports.
- After patching, verify systems are rebooted into the corrected kernel.
Public sources used
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-400: Exact CWE lookup
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Open ATT&CK lookupCVE-2024-38384 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
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:N/UI:N/S:U/C:H/I:H/A:H2.55.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
8.4HighVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/714e59b5456e4d6e4295a9968c564abe193f461cCVE reference, Linux
- https://git.kernel.org/stable/c/785298ab6b802afa75089239266b6bbea590809cCVE reference, Linux
- https://git.kernel.org/stable/c/d0aac2363549e12cc79b8e285f13d5a9f42fd08eCVE reference, Linux
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.
Uncontrolled Resource Consumption
Uncontrolled Resource Consumption represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.