Security readout for executives and security teams
Plain-English summary
CVE-2022-50349 is a Linux kernel memory leak in the tifm 7xx1 media-switch path. A local low-privileged user may be able to cause availability impact on affected systems using this driver. The provided sources show no KEV listing and no cited active exploitation.
Executive priority
Treat this as routine-to-priority kernel maintenance, not an emergency. It has local availability impact and no sourced active exploitation, but it can matter on multi-user or high-availability Linux systems.
Technical view
In tifm_7xx1_switch_media(), a device_register() failure can leak the kobject name allocated through dev_set_name()/device_add(). The resolved behavior is to release the initialized device reference with put_device(). The issue is CWE-401 with CVSS 3.1 score 5.5 and local availability impact.
Likely exposure
Exposure is most likely on Linux systems running affected kernel versions with the tifm 7xx1 driver present or loadable. Distribution kernels may have backported fixes, so version strings alone are insufficient for final exposure decisions.
Exploitation context
The CVSS vector requires local access, low privileges, no user interaction, and affects availability only. The bundle does not identify public exploitation, weaponized details, or inclusion in CISA KEV.
Researcher notes
The source evidence is narrow: a kernel memory leak fixed in stable commits. The affected-version data is branch-oriented and may not match downstream distributions. Avoid claiming confidentiality, integrity, remote attack, or active exploitation without additional vendor evidence.
Mitigation direction
- Apply vendor or distribution kernel updates containing the stable tifm fix.
- Check vendor advisories for backported fixes before relying on upstream version numbers.
- Reduce exposure to untrusted local users on affected systems where patching is delayed.
- Review whether tifm 7xx1 support is needed on critical systems.
Validation and detection
- Inventory Linux kernel versions and distribution patch levels across managed systems.
- Confirm whether the tifm 7xx1 driver is present, built, or loadable.
- Map systems against vendor advisories and the referenced stable kernel commits.
- Prioritize validation on shared hosts or systems with untrusted local shell users.
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
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Open ATT&CK lookupCVE-2022-50349 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/2bbb222a54ff501f77ce593d21b76b79c905045eCVE reference, Linux
- https://git.kernel.org/stable/c/d861b7d41b17942b337d4b87a70de7cd1dc44d4eCVE reference, Linux
- https://git.kernel.org/stable/c/1695b1adcc3a7d985cd22fa3b55761edf3fab50dCVE reference, Linux
- https://git.kernel.org/stable/c/ee2715faf7e7153f5142ed09aacfa89a64d45dcbCVE reference, Linux
- https://git.kernel.org/stable/c/57c857353d5020bdec8284d9c0fee447484fe5e0CVE reference, Linux
- https://git.kernel.org/stable/c/848c45964ded537107e010aaf353aa30a0855387CVE reference, Linux
- https://git.kernel.org/stable/c/35abbc8406cc39e72d3ce85f6e869555afe50d54CVE reference, Linux
- https://git.kernel.org/stable/c/ef843ee20576039126d34d6eb5f45d14c3e6ce18CVE reference, Linux
- https://git.kernel.org/stable/c/fd2c930cf6a5b9176382c15f9acb1996e76e25adCVE 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.