Security readout for executives and security teams
Plain-English summary
This is a Linux kernel availability issue in the ice network driver. If two unsupported modes, ADQ and switchdev, are enabled together, the kernel can hit a null pointer dereference. The expected business impact is host or network-service disruption, not data theft, based on the supplied CVSS vector.
Executive priority
Treat this as a moderate operational-risk kernel issue. It is most important for environments where Linux hosts use the ice driver and local users or automation can change advanced network modes. Patch through normal kernel maintenance unless those conditions make outage risk material.
Technical view
CVE-2023-53442 is a CWE-476 null pointer dereference in the Linux kernel ice driver. ADQ and switchdev are not supported simultaneously. The resolved behavior blocks switchdev when ADQ is active and blocks ADQ when switchdev is active. CVSS 3.1 is 5.5 with local, low-privilege, availability-only impact.
Likely exposure
Exposure appears limited to Linux systems running affected kernel builds where the ice driver and ADQ or switchdev configuration paths are relevant. Systems not using this driver or these features are less likely to be exposed, but the bundle does not provide distribution package mapping.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. The CVSS vector requires local access with low privileges and no user interaction, with high availability impact only. No remote exploitation is supported by the provided evidence.
Researcher notes
The core condition is an unsupported ADQ plus switchdev combination in the ice driver. The fix is defensive state checking between devlink switchdev mode changes and ADQ enablement. The provided sources do not include exploit reports, distro advisories, or detailed affected package ranges.
Mitigation direction
- Apply Linux kernel stable fixes or vendor packages that include the referenced commits.
- Until patched, avoid enabling ADQ and switchdev together on affected systems.
- Check Linux distribution advisories for package names, backports, and maintenance windows.
- Prioritize hosts where local users can change relevant network driver or devlink settings.
Validation and detection
- Inventory Linux hosts using affected kernel versions and the ice driver.
- Check whether ADQ or switchdev is enabled on systems using the ice driver.
- Verify installed kernel packages include a fix corresponding to the referenced stable commits.
- Review system logs for kernel null pointer dereference events involving ice driver paths.
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-476: 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-2023-53442 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/1c82d1b736ce85e77fd4da05eca6f1f4a52a2bc3CVE reference, Linux
- https://git.kernel.org/stable/c/24f0d69da35d812b3a1104918014a29627140cb1CVE reference, Linux
- https://git.kernel.org/stable/c/43d00e102d9ecbe2635d7e3f2e14d2e90183d6afCVE 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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.