Security readout for executives and security teams
Plain-English summary
This is a Linux kernel availability issue in the vt6655 staging wireless driver. A local low-privileged user could potentially trigger a crash or denial of service when driver initialization cleanup handles allocation failure incorrectly. The sources do not indicate data theft, privilege escalation, or active exploitation.
Executive priority
Treat as a routine but real availability patching item. Prioritize systems that allow local user access and include the vt6655 driver. It does not currently justify emergency response based on the provided evidence.
Technical view
Erroneous reverse cleanup loops in vt6655 initialization may skip index zero or start from -1 after early allocation failure. That can leak memory or access invalid memory. CVSS 3.1 is 5.5: local attack vector, low privileges, no user interaction, availability impact only.
Likely exposure
Exposure is most relevant to Linux systems running affected kernel builds with the vt6655 staging driver present or loadable. General servers without this driver or hardware path are less likely to be exposed.
Exploitation context
The bundle marks KEV as false and provides no cited evidence of active exploitation. Exploitation requires local access with low privileges and appears focused on denial of service, not remote compromise.
Researcher notes
The vulnerability is in error-path cleanup logic, not normal packet processing. Validation should focus on source version matching, module reachability, and vendor backport confirmation. The record names CWE-401, but also describes invalid memory access when allocation fails immediately.
Mitigation direction
- Identify systems using affected Linux kernel versions and the vt6655 driver.
- Prioritize kernel updates that include the referenced stable fixes.
- Check distribution vendor advisories for packaged fixed kernel releases.
- Disable or avoid loading vt6655 where it is unnecessary.
- Apply normal local access controls to limit untrusted users.
Validation and detection
- Inventory kernel versions across Linux assets.
- Check whether the vt6655 module is present or loaded.
- Confirm vendor kernel changelogs include one referenced stable commit.
- Regression test wireless functionality after kernel updates.
- Monitor for local kernel crash or denial-of-service reports.
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-401: 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-2022-50355 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/637672a71f5016a40b0a6c0f3c8ad25eacedc8c3CVE reference, Linux
- https://git.kernel.org/stable/c/88b9cc60f26e8a05d1ddbddf91b09ca2915f20e0CVE reference, Linux
- https://git.kernel.org/stable/c/95ac62e8545be2b0a8cae0beef7c682e2e470e48CVE reference, Linux
- https://git.kernel.org/stable/c/f19e5b7df54590c831f350381963f25585c8f7d5CVE reference, Linux
- https://git.kernel.org/stable/c/a9e9806d1c315bc50dce05479a079b9a104474b8CVE reference, Linux
- https://git.kernel.org/stable/c/ed11b73c963292e7b49c0f37025c58ed3b7921d6CVE reference, Linux
- https://git.kernel.org/stable/c/2a2db520e3ca5aafba7c211abfd397666c9b5f9dCVE 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.
Missing Release of Memory after Effective Lifetime
Missing Release of Memory after Effective Lifetime represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.