Security readout for executives and security teams
Plain-English summary
This is a Linux kernel memory leak in the iwlwifi debugfs firmware information path. A local user with privileges to access that debugfs file could repeatedly trigger memory loss, potentially degrading or denying service. The sources do not indicate data theft, integrity impact, or active exploitation.
Executive priority
Treat as a routine but real availability fix. It is not supported as remotely exploitable or actively exploited, but local denial-of-service risk justifies inclusion in normal Linux kernel patch cycles, especially for laptops and wireless-enabled systems.
Technical view
The issue is CWE-401 in Linux iwlwifi firmware debugfs handling. When fw_info is read to completion, the code returns NULL to signal end-of-data but fails to free a status tracking object. CVSS 3.1 is 5.5: local attack, low complexity, low privileges, no user interaction, availability impact only.
Likely exposure
Exposure is likely limited to Linux systems running affected kernel versions with iwlwifi present and accessible debugfs firmware information. Server exposure may be lower where Wi-Fi hardware or debugfs access is absent. Distribution backports may change version-based conclusions.
Exploitation context
The CVE record does not show KEV listing or cited active exploitation. The attack model is local and privileged, focused on exhausting kernel memory through a leak. No remote, unauthenticated, confidentiality, or integrity impact is supported by the supplied sources.
Researcher notes
The supplied evidence is concise and kernel-patch focused. Key uncertainty is environmental reach: debugfs availability, local permissions, iwlwifi presence, and vendor backports determine practical exposure. Avoid assuming all Linux hosts are affected solely from upstream version strings.
Mitigation direction
- Apply Linux kernel or distribution updates containing the referenced stable fixes.
- Prioritize systems with Intel iwlwifi hardware and accessible debugfs.
- Check vendor advisories for backported fixes before relying on upstream version numbers.
- Review whether debugfs exposure can be reduced under vendor-supported hardening guidance.
- Monitor affected hosts for abnormal memory pressure until patched.
Validation and detection
- Inventory Linux kernel versions against the CVE affected and fixed version data.
- Identify systems using the iwlwifi driver and firmware debugfs interfaces.
- Confirm whether distribution kernels include the referenced stable commits or equivalent backports.
- Validate that non-administrative users cannot access sensitive debugfs paths.
- Track availability symptoms such as unexplained kernel memory growth on candidate hosts.
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-2023-53422 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/89496d6cff297c88fe0286a440c380ceb172da2bCVE reference, Linux
- https://git.kernel.org/stable/c/e302e9ca14a86a80eadfb24a34d8675aadaf3ef3CVE reference, Linux
- https://git.kernel.org/stable/c/37f64bc8e001f216566d17ef9fd5608c762ebcd4CVE reference, Linux
- https://git.kernel.org/stable/c/fe17124282da055cb2e53f0131521459b5c7866cCVE reference, Linux
- https://git.kernel.org/stable/c/b830ba20b43be52eae7d4087b61a0079dec56820CVE reference, Linux
- https://git.kernel.org/stable/c/3d90d2f4a018fe8cfd65068bc6350b6222be4852CVE 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.