Security readout for executives and security teams
Plain-English summary
A concurrency flaw in the Linux HNS3 network driver can crash the kernel when a network link changes while the associated RoCE driver is shutting down. The resulting system outage may disrupt workloads using this hardware and configuration. The supplied record rates it high severity, but documents no observed exploitation.
Executive priority
Treat this as a high-priority availability risk for infrastructure using HNS3 and RoCE, especially where kernel crashes would interrupt critical services. It is not supported as an internet-wide emergency or actively exploited threat. Expedite inventory and normal kernel patching, then verify distribution-specific backports.
Technical view
During an HNS3 link-status update, the network driver may notify a RoCE driver that is concurrently being uninitialized, causing a kernel crash. The cited fix checks whether RoCE remains registered and makes teardown wait for link-update completion. The documented behavior establishes a race-related crash; it does not independently demonstrate confidentiality or integrity compromise.
Likely exposure
Exposure is likely limited to Linux systems using the HNS3 network driver with the related RoCE integration. The supplied affected-version data includes ambiguous entries and commit identifiers, so kernel version alone is insufficient. Confirm status using distribution advisories, backport records, and the cited stable commits.
Exploitation context
The supplied CVSS vector describes local access, low privileges, and high attack complexity. CISA KEV status is false, and no supplied source reports active exploitation or a public exploit. The documented trigger involves concurrent link-status change and RoCE teardown; deliberate exploitability is not established.
Researcher notes
The record describes a driver lifecycle synchronization failure and provides five Linux stable commit references. Its affected-version representation is unclear, including duplicate commit entries and a version listed as “0.” Researchers should avoid inferring exact vulnerable ranges without branch and distributor mapping. The described outcome is a kernel crash; broader CVSS impacts are not substantiated by the narrative.
Mitigation direction
- Install a vendor-supported kernel update containing the cited stable fix.
- Check distribution guidance for CVE-2024-39507 and applicable backports.
- Prioritize exposed systems using HNS3 networking and RoCE functionality.
- Use vendor-recommended operational mitigations if immediate kernel replacement is unavailable.
Validation and detection
- Inventory Linux hosts loading the HNS3 driver and using RoCE.
- Map installed kernel builds to distribution advisories and backport changelogs.
- Confirm the applicable stable fix is present in each deployed kernel.
- Review kernel logs for crashes associated with HNS3 link changes or RoCE teardown.
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.
CVE-2024-39507 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
- 7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:L/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:H/PR:L/UI:N/S:U/C:H/I:H/A:H15.9LinuxVulnerability scoring details
Base CVSS 3.1 score
7HighVector: CVSS:3.1/AV:L/AC:H/PR:L/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/62b5dfb67bfa8bd0301bf3442004563495f9ee48CVE reference, Linux
- https://git.kernel.org/stable/c/6d0007f7b69d684879a0f598a042e40244d3cf63CVE reference, Linux
- https://git.kernel.org/stable/c/689de7c3bfc7d47e0eacc641c4ce4a0f579aeefaCVE reference, Linux
- https://git.kernel.org/stable/c/b2c5024b771cd1dd8175d5f6949accfadbab7eddCVE reference, Linux
- https://git.kernel.org/stable/c/12cda920212a49fa22d9e8b9492ac4ea013310a4CVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.htmlCVE reference, CVE
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.