Security readout for executives and security teams
Plain-English summary
A Linux Wi-Fi driver flaw can mishandle shared memory while a device using Microchip WILC1000 connects to a network. The supplied CVSS rates possible confidentiality loss and system disruption as critical. Exposure is limited to systems using this driver and affected kernels; the bundle does not demonstrate practical exploitation.
Executive priority
Treat confirmed WILC1000 deployments as urgent because the supplied score is 9.1, but avoid fleet-wide emergency action for Linux systems without this hardware or driver. Require rapid inventory, vendor-supported updates, and evidence that the stable fix is present.
Technical view
The wilc1000 connection path dereferences an RCU-protected pointer while parsing target BSS parameters without entering an RCU read-side critical section. Stable fixes protect the dereference and copy information-element data inside that section. Lockdep exposed the defect during a wpa_supplicant connection operation.
Likely exposure
Prioritize Linux appliances, embedded systems, and other devices using Microchip WILC1000 Wi-Fi hardware with the wilc1000 driver. Affected-version data in the bundle is not sufficiently clear for reliable range matching, so verify the deployed kernel against vendor packages or the cited stable commits.
Exploitation context
The CVE is not listed as KEV, and the supplied sources provide no evidence of active exploitation or a public exploit. The report documents a lockdep warning and a defective connection-path memory access. Whether an attacker can reliably obtain the CVSS-described confidentiality or availability impact is not established here.
Researcher notes
The bundle attributes CWE-476 and CVSS 9.1, although the technical description specifically shows an RCU lifetime violation detected by lockdep. Eight stable-kernel commits are cited. Exact vulnerable and fixed ranges are ambiguous in the supplied affected-version records, and no proof of remotely achievable impact is included.
Mitigation direction
- Install a vendor-supported kernel containing the applicable cited stable fix.
- Check Linux distribution and device-vendor advisories for corrected package versions.
- Prioritize internet-facing or safety-critical devices that rely on WILC1000 Wi-Fi.
- If patching is delayed, obtain vendor-approved compensating controls; none are specified in the bundle.
Validation and detection
- Confirm whether each device loads or includes the wilc1000 driver.
- Record exact kernel builds and compare them with vendor-fixed packages or cited commits.
- Verify the applicable RCU fix is present in deployed kernel source or package metadata.
- After updating, test Wi-Fi connections and review kernel diagnostics for recurring RCU warnings.
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-2024-27053 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
- Critical
- CVSS
- 9.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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
2 official scoresWe 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:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H3.95.2CISA-ADPCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H2.85.9LinuxVulnerability scoring details
Base CVSS 3.1 score
9.1CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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/e556006de4ea93abe2b46cba202a2556c544b8b2CVE reference, Linux
- https://git.kernel.org/stable/c/b4bbf38c350acb6500cbe667b1e2e68f896e4b38CVE reference, Linux
- https://git.kernel.org/stable/c/d80fc436751cfa6b02a8eda74eb6cce7dadfe5a2CVE reference, Linux
- https://git.kernel.org/stable/c/745003b5917b610352f52fe0d11ef658d6471ec2CVE reference, Linux
- https://git.kernel.org/stable/c/4bfd20d5f5c62b5495d6c0016ee6933bd3add7ceCVE reference, Linux
- https://git.kernel.org/stable/c/5800ec78775c0cd646f71eb9bf8402fb794807deCVE reference, Linux
- https://git.kernel.org/stable/c/dd50d3ead6e3707bb0a5df7cc832730c93ace3a7CVE reference, Linux
- https://git.kernel.org/stable/c/205c50306acf58a335eb19fa84e40140f4fe814fCVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlCVE reference, CVE · x_transferred
- https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlCVE reference, siemens-SADP
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.