Security readout for executives and security teams
Plain-English summary
This Linux kernel issue can crash the Broadcom brcmfmac Wi-Fi driver when a device resumes from low power or is manually bound. The reported effect is a kernel oops and Wi-Fi stopping after resume. The public record does not show remote code execution, data theft, or active exploitation.
Executive priority
Treat as a reliability and availability patch for affected Linux wireless devices, not an emergency internet-facing vulnerability based on current evidence.
Technical view
brcmfmac probe paths could receive a NULL id argument from PCI resume reprobe or manual sysfs binding. The driver dereferenced that argument, causing a NULL pointer dereference. The fix adds NULL handling, manual ID lookup for PCI and USB paths, and an error path for SDIO.
Likely exposure
Most relevant to Linux endpoints, laptops, or embedded systems using Broadcom Wi-Fi with the brcmfmac driver and affected kernel builds. Exposure appears availability-focused and hardware-dependent.
Exploitation context
No KEV listing and no cited source in the bundle reports active exploitation. The described trigger is resume from D3 power state or local manual driver binding through sysfs, not a network-delivered attack.
Researcher notes
The source evidence is limited to the CVE record and kernel stable commits. No CVSS, CWE, exploitability analysis, or broader product advisory is provided in the bundle.
Mitigation direction
- Update to a Linux kernel or distro package containing the stable brcmfmac fixes.
- Prioritize affected fleets using Broadcom Wi-Fi and suspend/resume workflows.
- Check distribution advisories for backported fixes matching these kernel commits.
- Avoid unsupported local driver binding workflows on unpatched systems where practical.
Validation and detection
- Inventory Linux kernel versions and identify hosts using the brcmfmac driver.
- Check whether vendor kernel packages include the referenced stable commits.
- Review kernel logs for brcmfmac NULL pointer oops during resume.
- Test suspend and resume on representative Broadcom Wi-Fi hardware after patching.
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.
CVE-2023-53565 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
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.
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/84766e77a5c35e2b60e34f570c62fc97adc05e09CVE reference, Linux
- https://git.kernel.org/stable/c/60fc756fc8e6954a5618eecac73b255d651602e4CVE 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.