Security readout for executives and security teams
Plain-English summary
This Linux kernel issue is a local denial-of-service risk. A low-privileged local user may be able to trigger a memory leak in the dmi-sysfs firmware interface, potentially degrading availability. It is not described as a remote compromise, data theft, or integrity issue in the provided sources.
Executive priority
Handle through normal kernel patch management, with higher priority for multi-user or shared compute environments. This is a moderate availability risk, not an internet-facing emergency based on the supplied evidence.
Technical view
CVE-2022-49370 is a CWE-401 memory leak in Linux firmware dmi-sysfs. dmi_sysfs_register_handle used kobject_init_and_add(), which keeps a reference even on failure. The fix calls kobject_put() on the error path. CVSS 3.1 is 5.5: local access, low complexity, low privileges, no user interaction, high availability impact.
Likely exposure
Exposure is most relevant to Linux systems running affected kernel versions listed in the CVE record, especially shared systems where untrusted local users exist. Network-only exposure is not supported by the provided sources.
Exploitation context
The CVE is not in KEV, and the provided sources do not report active exploitation or public exploit tooling. The documented impact is local availability loss through memory leakage, not confidentiality or integrity compromise.
Researcher notes
The key validation point is the kobject lifetime error path in dmi_sysfs_register_handle. The provided fix rationale is explicit, but sources do not describe triggering conditions, proof-of-concept code, or exploitation in the wild.
Mitigation direction
- Apply vendor or distribution kernel updates containing the referenced stable fixes.
- Prioritize shared Linux systems with local shell, container, or workload access.
- Check Linux stable commit guidance if vendor guidance is not yet available.
- Monitor affected hosts for abnormal memory pressure until patched.
Validation and detection
- Inventory running Linux kernel versions against the CVE affected version data.
- Verify the deployed kernel includes the relevant stable fix commit for its branch.
- Confirm vulnerability scanners no longer report CVE-2022-49370 after update.
- Review whether untrusted local users can access affected systems.
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-2022-49370 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/a9bfb37d6ba7c376b0d53337a4c5f5ff324bd725CVE reference, Linux
- https://git.kernel.org/stable/c/ed38d04342dfbe9e5aca745c8b5eb4188a74f0efCVE reference, Linux
- https://git.kernel.org/stable/c/c66cc3c62870a27ea8f060a7e4c1ad8d26dd3f0dCVE reference, Linux
- https://git.kernel.org/stable/c/a724634b2a49f6ff0177a9e19a5a92fc1545e1b7CVE reference, Linux
- https://git.kernel.org/stable/c/985706bd3bbeffc8737bc05965ca8d24837bc7dbCVE reference, Linux
- https://git.kernel.org/stable/c/fdffa4ad8f6bf1ece877edfb807f2b2c729d8578CVE reference, Linux
- https://git.kernel.org/stable/c/3ba359ebe914ac3f8c6c832b28007c14c39d3766CVE reference, Linux
- https://git.kernel.org/stable/c/ec752973aa721ee281d5441e497364637c626c7bCVE reference, Linux
- https://git.kernel.org/stable/c/660ba678f9998aca6db74f2dd912fa5124f0fa31CVE 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.