Security readout for executives and security teams
Plain-English summary
CVE-2025-22032 is a Linux kernel Wi-Fi driver flaw that can crash affected systems. It concerns the MediaTek mt7921/mt792x driver path and is rated medium, mainly because the documented impact is loss of availability rather than data theft or privilege escalation.
Executive priority
Treat as a targeted availability risk. It should be patched through normal endpoint and appliance kernel maintenance, with faster handling for systems where Wi-Fi reliability affects operations, field access, or safety-critical availability.
Technical view
The issue is a CWE-476 NULL pointer dereference in mt792x_rx_get_wcid. The source states deflink was not properly initialized with the sta context, allowing a kernel panic during receive handling. CVSS 3.1 is 5.5: local access, low complexity, low privileges, no user interaction, high availability impact.
Likely exposure
Exposure is most likely on Linux systems using the mt76/mt7921 MediaTek Wi-Fi driver and affected kernel builds listed in the CVE data. Servers without this hardware or driver path are less likely exposed. Version evidence in the bundle should be confirmed against distro kernel advisories.
Exploitation context
The bundle does not report active exploitation, and KEV status is false. The CVSS vector indicates local, low-privilege exploitation conditions. The practical concern is a local denial-of-service through kernel panic, not confidentiality or integrity compromise based on the provided evidence.
Researcher notes
The available evidence supports a local kernel denial-of-service in the mt76 mt7921 receive path. Do not assume remote reachability, privilege escalation, or data exposure from this bundle. Affected-version metadata appears terse, so map it through downstream distro packaging before declaring exposure.
Mitigation direction
- Update to a vendor-supported kernel containing the referenced stable fixes.
- Prioritize laptops, desktops, and embedded systems using MediaTek mt7921 Wi-Fi.
- Check Linux distribution advisories for exact fixed package versions.
- Temporarily remove or disable affected Wi-Fi hardware if downtime risk is unacceptable.
- Avoid direct wrangler or unrelated deployment actions; this is kernel remediation work.
Validation and detection
- Inventory systems for Linux kernels and MediaTek mt7921 or mt792x Wi-Fi usage.
- Compare installed kernel packages against distribution advisories for CVE-2025-22032.
- Confirm whether vendor kernel changelogs include the referenced stable commits.
- Review crash logs for mt792x_rx_get_wcid or mt7921_queue_rx_skb panic traces.
- Validate remediation by confirming patched kernel versions after reboot.
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.
CWE-476: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2025-22032 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
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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/0cfea60966e4b1239d20bebf02258295e189e82aCVE reference, Linux
- https://git.kernel.org/stable/c/effec50381991bc067acf4b3351a57831c74d27fCVE reference, Linux
- https://git.kernel.org/stable/c/5a57f8eb2a17d469d65cd1186cea26b798221d4aCVE reference, Linux
- https://git.kernel.org/stable/c/adc3fd2a2277b7cc0b61692463771bf9bd298036CVE 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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.