Security readout for executives and security teams
Plain-English summary
A Linux Wi-Fi driver error can crash Intel wireless firmware when a device connects to a specially configured access point using TKIP group encryption and management-frame protection. The primary business risk is loss of wireless connectivity or device availability; the supplied scoring also indicates limited integrity impact and no confidentiality impact.
Executive priority
Prioritize timely remediation for fleets dependent on Intel Wi-Fi, especially operational, mobile, or field systems. Emergency treatment is generally unwarranted without confirmed exposure or exploitation, but affected critical devices should be updated promptly because a nearby network condition may disrupt connectivity without authentication.
Technical view
The iwlwifi MVM driver incorrectly sets the management frame protection flag when installing a TKIP group temporal key. Firmware does not require that flag and may crash because TKIP with that MFP setting is invalid. Exploitation requires adjacent-network conditions and an access point configured with TKIP group cipher and MFPC.
Likely exposure
Exposure is limited to Linux systems using the affected iwlwifi MVM path and encountering the specific TKIP-plus-MFPC access-point configuration. The bundle lists several Linux version entries, but their exact affected and fixed ranges are insufficiently clear; confirm status through the distribution or kernel vendor.
Exploitation context
The CVSS vector describes adjacent-network access, low complexity, no privileges, and no user interaction. The supplied record is not in KEV, and no cited source establishes active exploitation. Treat this as a credible local wireless denial-of-service risk, not a demonstrated internet-scale threat.
Researcher notes
The failure occurs during GTK handling: the driver passes an MFP flag alongside TKIP, potentially crashing firmware. The source bundle provides four stable-kernel correction commits but does not clearly map complete vulnerable ranges. No CWE is supplied, and no cited evidence demonstrates exploitation in the wild.
Mitigation direction
- Install a vendor-supported kernel update containing the cited upstream correction.
- Confirm the distribution vendor's affected and fixed kernel versions before deployment.
- Where operationally feasible, avoid access points combining TKIP group encryption with MFPC.
- Prioritize systems whose wireless availability is operationally critical.
Validation and detection
- Inventory Linux kernel versions and devices using the iwlwifi MVM driver.
- Compare installed kernels with distribution advisories and the cited stable-kernel corrections.
- Review access-point configurations for TKIP group encryption combined with MFPC.
- Check wireless and kernel logs for unexplained Intel Wi-Fi firmware crashes.
- Verify normal wireless operation after applying the vendor-supported update.
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-2024-27434 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/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:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H2.84.2LinuxVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/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/b4f1b0b3b91762edd19bf9d3b2e4c3a0740501f8CVE reference, Linux
- https://git.kernel.org/stable/c/40405cbb20eb6541c603e7b3d54ade0a7be9d715CVE reference, Linux
- https://git.kernel.org/stable/c/60f6d5fc84a9fd26528a24d8a267fc6a6698b628CVE reference, Linux
- https://git.kernel.org/stable/c/e35f316bce9e5733c9826120c1838f4c447b2c4cCVE 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.