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CVE Record

CVE-2024-57997: wifi: wcn36xx: fix channel survey memory allocation size

In the Linux kernel, the following vulnerability has been resolved: wifi: wcn36xx: fix channel survey memory allocation size KASAN reported a memory allocation issue in wcn->chan_survey due to incorrect size calculation. This commit uses kcalloc to allocate memory for wcn->chan_survey, ensuring proper initialization and preventing the use of uninitialized values when there are no frames on the channel.

MediumCVSS 5.5Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2024-57997 is a Linux kernel Wi-Fi driver bug in wcn36xx. A memory allocation size mistake could lead to use of uninitialized values and a kernel availability impact. The public scoring indicates local, low-privilege access is required. There is no cited evidence of active exploitation.

Executive priority

Treat as routine-to-priority patching for Linux endpoints or embedded devices using affected Wi-Fi hardware. It is not supported by public evidence as internet-remote or actively exploited, but availability impact in the kernel warrants timely remediation where exposure exists.

Technical view

The wcn36xx channel survey allocation used an incorrect size calculation for wcn->chan_survey. Kernel KASAN reported the issue. The fix changes allocation to kcalloc, ensuring correct sizing and initialization when there are no frames on the channel. CVSS 3.1 is 5.5: local, low complexity, low privileges, availability impact only.

Likely exposure

Exposure is most relevant to Linux systems running affected kernel versions with the wcn36xx Wi-Fi driver present or used. Servers without this driver or hardware are less likely to be exposed. Confirm exposure through kernel version, distribution advisories, and driver/module inventory.

Exploitation context

Public sources do not state active exploitation, and it is not listed as CISA KEV in the provided data. The CVSS vector indicates local access with low privileges is required. The documented impact is availability, not confidentiality or integrity.

Researcher notes

The affected-version data in the source bundle is not fully intuitive and should be reconciled against distribution kernel advisories. The core fix is in Linux stable commits for wcn36xx allocation behavior. Avoid assuming exposure without confirming the driver and vendor backport status.

Mitigation direction

  • Update to a vendor or distribution kernel containing the referenced stable fixes.
  • For Debian LTS systems, review and apply the cited Debian security update.
  • Prioritize systems using wcn36xx Wi-Fi hardware or loading the wcn36xx driver.
  • If no vendor package is available, monitor vendor guidance before applying custom kernels.

Validation and detection

  • Inventory Linux kernel versions across endpoints and embedded systems.
  • Check whether the wcn36xx driver is present, loaded, or tied to installed hardware.
  • Compare installed kernels with vendor advisories and referenced stable commit coverage.
  • After updating, verify the patched kernel is running following reboot.
Prepared
Confidence
medium
Sources
8

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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

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cwe · low confidence lookup

CWE-908: Exact CWE lookup

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cve · low confidence lookup

CVE-2024-57997 mapping review

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Open ATT&CK lookup
Vulnerability profileCVE Program record
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

Official CVE source material

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.

1CVSS vectors
3Timeline events
2ADP providers
7Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
5.5CVSS 3.1MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6CISA-ADP

Vulnerability scoring details

Base CVSS 3.1 score

5.5Medium
CVSS 3.1 vector shape for CVE-2024-57997Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
cvssV3_1other:ssvc
CVECVE Program Container
Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux29696e0aa413b9d56558731aae3806d7cff48d36, 29696e0aa413b9d56558731aae3806d7cff48d36, 29696e0aa413b9d56558731aae3806d7cff48d36, 29696e0aa413b9d56558731aae3806d7cff48d36, 29696e0aa413b9d56558731aae3806d7cff48d36unaffected
LinuxLinux5.18, 0, 6.1.129, 6.6.76, 6.12.13, 6.13.2, 6.14affected
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-908 · source CWE mapping

Use of Uninitialized Resource

Use of Uninitialized Resource represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.