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CVE Record

CVE-2024-27049: wifi: mt76: mt7925e: fix use-after-free in free_irq()

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7925e: fix use-after-free in free_irq() From commit a304e1b82808 ("[PATCH] Debug shared irqs"), there is a test to make sure the shared irq handler should be able to handle the unexpected event after deregistration. For this case, let's apply MT76_REMOVED flag to indicate the device was removed and do not run into the resource access anymore.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2024-27049 is a Linux kernel Wi-Fi driver flaw in the MediaTek mt76 mt7925e path. The issue is a use-after-free during interrupt cleanup, which can cause unsafe access after a device is removed. The public record does not provide CVSS, business impact, or confirmed exploitation.

Executive priority

Treat as a targeted kernel maintenance item, not an emergency based on current evidence. Prioritize affected endpoint fleets during normal patch cycles, escalating only if vendor advisories assign higher severity.

Technical view

The mt7925e driver can continue resource access from a shared IRQ handler after deregistration. The kernel fix marks the device with MT76_REMOVED so the handler avoids accessing removed resources. The sources identify this as resolved in Linux stable commits, but provide limited exploitability detail.

Likely exposure

Exposure is limited to Linux systems using the affected mt76 mt7925e Wi-Fi driver and vulnerable kernel builds. Distro kernels may differ because vendors backport fixes, so version strings alone are not reliable.

Exploitation context

CISA KEV status is false in the provided bundle, and no cited source confirms active exploitation. The sources do not describe remote reachability, required privileges, or practical exploitation conditions.

Researcher notes

The record lacks CVSS, CWE, exploit prerequisites, and impact detail. Analysis should stay tied to the mt76 mt7925e free_irq use-after-free fix and avoid broad claims about privilege escalation or remote exploitation without vendor confirmation.

Mitigation direction

  • Update to a vendor kernel containing the referenced Linux stable fixes.
  • Check distribution advisories for backported fixes matching CVE-2024-27049.
  • Prioritize laptops, endpoints, or appliances using MediaTek mt7925e Wi-Fi hardware.
  • If patch timing is unclear, follow vendor guidance for driver or kernel workarounds.

Validation and detection

  • Inventory Linux hosts for mt7925e or mt76 Wi-Fi driver usage.
  • Compare running kernel packages against distro advisories for CVE-2024-27049.
  • Confirm whether the referenced stable commits are present or backported.
  • Review kernel logs for mt7925e removal or IRQ-related instability signals.
Prepared
Confidence
medium
Sources
5

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.

ATT&CK lookup starting points

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CVE-2024-27049 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
4Source 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

CISA-ADPCISA ADP Vulnrichment
other:ssvc
CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxc948b5da6bbec742b433138e3e3f9537a85af2e5, c948b5da6bbec742b433138e3e3f9537a85af2e5, c948b5da6bbec742b433138e3e3f9537a85af2e5unaffected
LinuxLinux6.7, 0, 6.7.11, 6.8.2, 6.9affected
Weakness

CWE details

No CWE listed

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