Security readout for executives and security teams
Plain-English summary
This CVE is a Linux kernel Wi-Fi driver crash involving the MediaTek mt7921e driver. During a failed chip reset, repeated reset handling can leave NAPI state unsynchronized and crash the system. Business impact is mainly availability on systems using this hardware and affected kernels.
Executive priority
Handle through normal kernel patch management, with higher priority for fleets using MT7921e Wi-Fi. This is an availability risk, not proven active exploitation in the supplied evidence.
Technical view
The mt76 mt7921e reset path can call reset handling again after “driver own” failure without re-enabling or scheduling tx_napi before disabling it again. That can block in napi_disable/kthread handling and trigger a kernel warning/crash. Stable kernel commits changed reset failure handling to jump to final resource handling.
Likely exposure
Exposure appears limited to Linux systems with MediaTek MT7921e Wi-Fi hardware using affected kernel versions. The supplied data lists Linux kernel versions including 5.17, 5.19.9, and 6.0 as affected, but version boundaries are not fully described.
Exploitation context
The bundle does not show active exploitation, KEV listing, CVSS, CWE, or a remote attack path. The described trigger is a driver reset failure condition that can cause a local system crash. Treat exploitability details as incomplete.
Researcher notes
The public description is a resolved Linux kernel bug report with crash trace and stable commit references. Evidence supports a reset-path denial-of-service condition, but not attacker prerequisites, remote reachability, CVSS scoring, or complete affected-version boundaries.
Mitigation direction
- Identify systems using the mt7921e Wi-Fi driver.
- Check vendor kernel advisories for fixed stable releases.
- Prioritize kernel updates on laptops or endpoints using MT7921e hardware.
- Use the referenced stable commits to confirm downstream backports.
- Monitor kernel logs for repeated mt7921e reset failures.
Validation and detection
- Inventory loaded Wi-Fi drivers and MediaTek MT7921e hardware.
- Compare running kernel versions against vendor fixed builds.
- Check kernel package changelogs for the referenced mt76 fix.
- Review logs for “driver own failed” or reset crash patterns.
- Confirm patched kernels include the stable commit changes.
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-2022-48705 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
- 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/f7f3001723e337568017e8617974f29bc8b2f595CVE reference, Linux
- https://git.kernel.org/stable/c/fa3fbe64037839f448dc569212bafc5a495d8219CVE 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.