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CVE Record

CVE-2026-23373: wifi: rsi: Don't default to -EOPNOTSUPP in rsi_mac80211_config

In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: Don't default to -EOPNOTSUPP in rsi_mac80211_config This triggers a WARN_ON in ieee80211_hw_conf_init and isn't the expected behavior from the driver - other drivers default to 0 too.

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 issue is in the RSI Wi-Fi driver configuration path. The driver returned an unsupported-operation error by default, triggering a kernel warning during hardware configuration. The public record does not describe data theft, privilege escalation, remote code execution, or active exploitation.

Executive priority

Treat this as routine kernel hygiene unless your fleet depends on RSI Wi-Fi hardware or observes related kernel warnings. There is insufficient public evidence for emergency response, but affected kernels should be updated through standard maintenance.

Technical view

The fix changes rsi_mac80211_config behavior so it does not default to -EOPNOTSUPP, because that triggers WARN_ON in ieee80211_hw_conf_init and differs from expected driver behavior. Public data provides kernel stable commit references but no CVSS, CWE, exploitability details, or operational impact beyond the warning.

Likely exposure

Exposure appears limited to Linux systems running affected kernel versions with the RSI Wi-Fi driver path present. Systems without relevant RSI Wi-Fi hardware or driver usage are less likely to encounter the issue, but the source bundle does not fully define affected configurations.

Exploitation context

CISA KEV status is false in the source bundle, and no cited source states active exploitation. The available description points to an incorrect driver return value causing a kernel warning, not a confirmed attacker-driven exploit path.

Researcher notes

The record is sparse: no CVSS, CWE, reproducer, or exploit narrative is provided. Analysis should stay anchored to the driver behavior described and the four stable kernel commits. Do not generalize this to all Wi-Fi drivers or assume active exploitation.

Mitigation direction

  • Check Linux distribution or kernel vendor advisories for backported fixes.
  • Prioritize kernels containing the referenced stable commits when available.
  • Patch affected systems through normal kernel update channels.
  • Assess RSI Wi-Fi driver dependency before scheduling urgent maintenance.
  • Avoid inventing compensating controls beyond vendor guidance.

Validation and detection

  • Inventory Linux kernel versions against the affected ranges in the CVE record.
  • Confirm whether RSI Wi-Fi support is present or used on managed systems.
  • Review kernel package changelogs for the referenced stable commit IDs.
  • Monitor logs for related kernel WARN_ON events after wireless configuration.
  • Track vendor advisories for CVSS, impact, or mitigation updates.
Prepared
Confidence
medium
Sources
6

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

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CVE-2026-23373 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
0ADP providers
5Source links

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.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux0a44dfc070749514b804ccac0b1fd38718f7daa1, 0a44dfc070749514b804ccac0b1fd38718f7daa1, 0a44dfc070749514b804ccac0b1fd38718f7daa1, 0a44dfc070749514b804ccac0b1fd38718f7daa1unaffected
LinuxLinux6.9, 0, 6.12.77, 6.18.17, 6.19.7, 7.0affected
Weakness

CWE details

No CWE listed

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