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CVE Record

CVE-2024-26682: wifi: mac80211: improve CSA/ECSA connection refusal

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: improve CSA/ECSA connection refusal As mentioned in the previous commit, we pretty quickly found that some APs have ECSA elements stuck in their probe response, so using that to not attempt to connect while CSA is happening we never connect to such an AP. Improve this situation by checking more carefully and ignoring the ECSA if cfg80211 has previously detected the ECSA element being stuck in the probe response. Additionally, allow connecting to an AP that's switching to a channel it's already using, unless it's using quiet mode. In this case, we may just have to adjust bandwidth later. If it's actually switching channels, it's better not to try to connect in the middle of that.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel Wi-Fi issue affects how mac80211 decides whether to refuse a connection during channel switch announcements. The kernel fix avoids unnecessary refusal when an access point advertises stale or already-current channel switch information. Supplied sources suggest a wireless connectivity/reliability flaw, not documented remote code execution or data theft.

Executive priority

Handle through normal kernel patch management unless the business depends heavily on affected Linux Wi-Fi connectivity. There is no supplied evidence of active exploitation or severe security impact, but unpatched kernels can still create operational disruption.

Technical view

mac80211 used CSA/ECSA elements in probe responses to avoid connecting during channel switching. Some APs kept stale ECSA elements, causing clients to never connect. The fix ignores ECSA previously detected as stuck and allows connection when the AP is switching to the channel it already uses, except quiet mode.

Likely exposure

Exposure is limited to Linux systems using affected kernel versions and Wi-Fi paths relying on mac80211. The source bundle lists Linux 6.7 through 6.7.5 and 6.8 as affected, but distribution backport status is not provided.

Exploitation context

The supplied sources do not show active exploitation, KEV listing, public exploit details, or attacker impact beyond connection refusal behavior. Treat exploitation status as unconfirmed and prioritize based on wireless dependency and kernel maintenance posture.

Researcher notes

The CVE text describes a resolved mac80211 logic flaw around CSA/ECSA connection refusal. Severity, CVSS, and CWE are absent in the supplied bundle. Research should focus on kernel version mapping, distro backports, and reproducing connectivity impact without assuming broader compromise.

Mitigation direction

  • Check vendor or distribution guidance for CVE-2024-26682.
  • Update to a kernel package containing the referenced stable fixes.
  • Prioritize laptops, embedded Linux, and Wi-Fi-dependent devices first.
  • If no patch is available, monitor vendor advisories for backports.

Validation and detection

  • Inventory Linux kernel versions on Wi-Fi-capable systems.
  • Confirm whether systems use mac80211-based wireless drivers.
  • Verify fixed packages reference the stable kernel commits or CVE.
  • Review distribution security trackers for backport status.
Prepared
Confidence
medium
Sources
4

Public sources used

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.

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CVE-2024-26682 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
3Timeline events
2ADP providers
3Source links

SSVC decision data

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

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

CVECVE Program Container
CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxc09c4f31998bac6d73508e38812518aceb069b68, c09c4f31998bac6d73508e38812518aceb069b68unaffected
LinuxLinux6.7, 0, 6.7.5, 6.8affected
Weakness

CWE details

No CWE listed

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