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CVE Record

CVE-2024-38614: openrisc: traps: Don't send signals to kernel mode threads

In the Linux kernel, the following vulnerability has been resolved: openrisc: traps: Don't send signals to kernel mode threads OpenRISC exception handling sends signals to user processes on floating point exceptions and trap instructions (for debugging) among others. There is a bug where the trap handling logic may send signals to kernel threads, we should not send these signals to kernel threads, if that happens we treat it as an error. This patch adds conditions to die if the kernel receives these exceptions in kernel mode code.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2024-38614 affects the Linux kernel on OpenRISC systems. A kernel trap-handling bug could incorrectly send signals to kernel-mode threads during certain exceptions. The upstream fix changes handling so these exceptions in kernel mode are treated as kernel errors instead. Business urgency is limited unless you operate Linux on OpenRISC hardware or emulators.

Executive priority

Treat as targeted, architecture-specific maintenance. Prioritize quickly only if OpenRISC Linux is in use; otherwise track through normal kernel patch governance.

Technical view

In OpenRISC exception handling, floating-point exceptions and trap instructions can generate signals for user processes. The flaw allowed this signaling path to target kernel threads, which should not receive such signals. Linux stable commits add checks to detect kernel-mode exceptions and call the kernel error path instead.

Likely exposure

Exposure appears limited to Linux deployments using the OpenRISC architecture. The source bundle lists Linux kernel versions as affected and provides multiple upstream stable commit references, but does not provide CVSS, CWE, or distribution-specific package status.

Exploitation context

No active exploitation is stated in the provided sources, and the CVE is not marked KEV. The sources describe a kernel correctness and stability issue in OpenRISC trap handling, not a confirmed privilege-escalation or remote attack path.

Researcher notes

Evidence is sparse: no CVSS, CWE, impact rating, or exploit discussion is provided. Analysis should focus on OpenRISC kernel trap paths and whether affected deployments can trigger kernel-mode exceptions that reach the old signaling logic.

Mitigation direction

  • Inventory whether any production or lab systems run Linux on OpenRISC.
  • Review distribution or kernel vendor advisories for CVE-2024-38614.
  • Update to a vendor kernel containing the referenced upstream stable fixes.
  • If self-maintaining kernels, assess and backport the linked stable commits.

Validation and detection

  • Confirm system architecture before prioritizing remediation.
  • Check running kernel lineage against vendor-fixed builds or upstream stable commits.
  • Verify the OpenRISC trap-handling patch is present in maintained source trees.
  • Monitor vendor security channels for clarified affected version ranges.
Prepared
Confidence
medium
Sources
6

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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.

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CVE-2024-38614 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
3Timeline events
2ADP providers
5Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux27267655c5313ba0f5a3caa9ad35d887d9a12574, 27267655c5313ba0f5a3caa9ad35d887d9a12574, 27267655c5313ba0f5a3caa9ad35d887d9a12574, 27267655c5313ba0f5a3caa9ad35d887d9a12574unaffected
LinuxLinux6.4, 0, 6.6.33, 6.8.12, 6.9.3, 6.10affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.