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CVE-2026-80722 Linux CVE debrief

The Linux kernel vulnerability, CVE-2026-80722, affects wifi mac80211 users. The vulnerability class involves individual TWT params being passed to drv_add_twt_setup() with twt->length too short for the full struct ieee80211_twt_params. The likely operational impact includes potential issues with wifi mac80211. The source-confidence limits are based on limited information available. To review and address this vulnerability, defenders should validate individual TWT params before driver setup, review Linux kernel configurations, and ensure necessary patches are applied. This involves checking for potential issues with wifi mac80211 and mitigating any risks. Additionally, defenders should be aware of the potential impact on wifi mac80211 users and take steps to mitigate any risks. Limited information available. To verify, defenders should review Linux kernel configurations and validate individual TWT params before driver setup. This may involve checking for potential issues with wifi mac80211 and ensuring that the necessary patches are applied.

Vendor
Linux
Product
Unknown
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-28
Original CVE updated
2026-08-29
Advisory published
2026-08-28
Advisory updated
2026-08-29

Who should care

Linux kernel administrators and developers, wifi mac80211 users, and security teams responsible for vulnerability management and patching. These individuals should review Linux kernel configurations and validate individual TWT params before driver setup to prevent potential wifi mac80211 vulnerabilities. Additionally, they should be aware of the potential impact on wifi mac80211 users and take steps to mitigate any risks.

Technical summary

The Linux kernel vulnerability allows individual TWT params to reach drv_add_twt_setup() with twt->length too short for the full struct ieee80211_twt_params. This could potentially cause issues with wifi mac80211. To address this vulnerability, defenders should review Linux kernel configurations and validate individual TWT params before driver setup. This may involve checking for potential issues with wifi mac80211 and ensuring that the necessary patches are applied.

Defensive priority

Review Linux kernel configurations and validate individual TWT params before driver setup to prevent potential wifi mac80211 vulnerabilities.

Recommended defensive actions

  • Validate individual TWT params before passing to drv_add_twt_setup()
  • Review Linux kernel configurations for wifi mac80211
  • Monitor for potential issues with individual TWT params
  • Apply vendor-supported updates or mitigations through normal change control where exposure is confirmed
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The Linux kernel vulnerability allows individual TWT params to reach drv_add_twt_setup() with twt->length too short for the full struct ieee80211_twt_params. Limited information available. To verify, defenders should review Linux kernel configurations and validate individual TWT params before driver setup. This may involve checking for potential issues with wifi mac80211 and ensuring that the necessary patches are applied. Additionally, defenders should be aware of the potential impact on wifi mac80211 users and take steps to mitigate any risks.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-80722 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-80722

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-80722 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-80722

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/0502d5077e419427d80f4d46ba95d0067f5fb916

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/09d60d1f72e6598241490eb6c4e97245af895c09

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/47fb04c3826e1f90271d405523043d6708b9072a

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/92fcd0f30dc8e51f252589b082d46851d295cc1a

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/ade9e2f0f7f4d3089600ac2af8ef0b91746f923b

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/b558e07708d886acfcf4b0391ed7a8546e81d326

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/ff558072d199c1d641d1561da622e67f780514de

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.