Security readout for executives and security teams
Plain-English summary
CVE-2024-27391 is a Linux kernel Wi-Fi driver resource leak. On affected systems using the wilc1000 driver, repeatedly adding interfaces can leave extra kernel workqueues behind, consuming resources over time. The supplied sources do not show remote exploitation, public weaponization, or active exploitation.
Executive priority
Treat as a targeted maintenance issue, not an emergency. Patch affected embedded or wireless Linux assets during the next normal kernel update cycle unless those systems are multi-tenant, exposed to untrusted local users, or resource constrained.
Technical view
The wilc1000 driver created a workqueue each time an interface was initialized, although only one workqueue was needed per phy. New allocations overwrote the previous workqueue reference, leaking kernel worker resources. Stable kernel commits move allocation back to wilc_cfg80211_init and name the queue by wiphy rather than netdev.
Likely exposure
Exposure appears limited to Linux systems running affected kernel versions with the wilc1000 Wi-Fi driver present and used. General Linux servers without this driver or hardware path are unlikely to be exposed. Exact distro impact depends on kernel backports.
Exploitation context
The bundle provides no KEV listing and no cited evidence of active exploitation. The described behavior involves repeated wireless interface creation and deletion on an affected phy, suggesting a local or privileged operational trigger rather than a demonstrated remote attack.
Researcher notes
Evidence supports a kernel resource leak in wilc1000 workqueue allocation. Severity, CVSS, and CWE are absent from the bundle. Do not infer broader Wi-Fi stack exposure; scope analysis to systems using this driver and verify distro-specific backports.
Mitigation direction
- Update to a vendor kernel containing the cited stable fixes.
- Confirm Linux distribution advisories for backported wilc1000 patches.
- Disable or avoid unused wilc1000 driver support where operationally safe.
- Prioritize embedded or Wi-Fi appliances using WILC1000-class hardware.
Validation and detection
- Inventory kernels and identify systems with wilc1000 driver support enabled.
- Check whether vendor kernels include one of the cited stable commits.
- Review affected device classes that permit wireless interface lifecycle changes.
- In lab only, monitor for persistent workqueue growth after controlled interface lifecycle testing.
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
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CVE-2024-27391 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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
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/515cc676dfbce40d93c92b1ff3c1070e917f4e52CVE reference, Linux
- https://git.kernel.org/stable/c/4041c60a9d543b3ad50225385b072ba68e96166eCVE reference, Linux
- https://git.kernel.org/stable/c/90ae293d1d255f622318fce6eeea2e18f9fde5c1CVE reference, Linux
- https://git.kernel.org/stable/c/9ab0c303ccabfd6bdce14432792d41090070008cCVE reference, Linux
- https://git.kernel.org/stable/c/328efda22af81130c2ad981c110518cb29ff2f1dCVE 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.