Security readout for executives and security teams
Plain-English summary
CVE-2023-53404 is a Linux kernel memory leak in the fotg210 USB driver’s debugfs cleanup path. A local, low-privileged user could potentially cause availability impact over time. It is not listed as known exploited in KEV, and the source bundle does not show remote exposure or data compromise.
Executive priority
Treat as a normal kernel maintenance issue unless affected systems allow untrusted local users. The main business risk is availability degradation, not data theft. Patch through standard kernel update cycles, with faster handling for shared servers, lab systems, and embedded Linux devices using affected kernels.
Technical view
The flaw is CWE-401: debugfs_lookup() returned a reference that was not released with dput(), causing a memory leak. The kernel fix replaces the pattern with debugfs_lookup_and_remove(), which handles lookup and removal cleanup together. CVSS 3.1 is 5.5: local attack vector, low complexity, low privileges, no user interaction, high availability impact.
Likely exposure
Exposure appears limited to Linux systems running affected kernel versions with the fotg210 USB driver path present. The source metadata lists affected Linux versions including 5.14, 5.15.100, 6.1.18, 6.2.5, and 6.3, plus an ambiguous 0 entry. Distribution backports must be checked separately.
Exploitation context
The provided CVSS vector requires local access and low privileges. KEV status is false, and the bundle provides no evidence of active exploitation, public weaponization, remote exploitation, confidentiality impact, or integrity impact.
Researcher notes
Evidence supports a local availability issue from a missing reference release in fotg210 debugfs removal logic. The version data is sparse and distribution-specific exposure is not established in the bundle. Validate using kernel source/package backport status rather than assuming upstream version strings map directly to deployed risk.
Mitigation direction
- Update to a kernel containing the referenced stable fixes.
- Check your Linux distribution security advisory for backported fixes.
- Prioritize systems where untrusted local users can run code.
- Review whether fotg210 USB support is enabled or loaded.
- Follow vendor guidance if kernel package status is unclear.
Validation and detection
- Inventory kernel versions across Linux hosts and appliances.
- Compare installed packages against distribution fixed versions.
- Check kernel config or modules for fotg210 driver presence.
- Confirm the stable fix commit is included or backported.
- Track exceptions for systems with local multi-user access.
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-2023-53404 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/4a71b15744b8f286718722f80b663c06ed909d8aCVE reference, Linux
- https://git.kernel.org/stable/c/7d2d3bef6d700eb4261fb6761de2c95a9e3c0ac8CVE reference, Linux
- https://git.kernel.org/stable/c/55c2ffc534928f4732199617e3b746d79a57898fCVE reference, Linux
- https://git.kernel.org/stable/c/6b4040f452037a7e95472577891d57c6b18c89c5CVE 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.