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Vulnerabilities

Vulnerability · CVE-2026-98421

CVE-2026-98421: wifi: mac80211: require a peer station for TDLS setup confirm

Published Oct 14, 2026 · catalog updated Oct 17, 2026 · Linux Linux Kernel

Check if you run it

No confirmed exploitation is on record for CVE-2026-98421. EPSS is 0.21%. Act only if a listed version of Linux Linux Kernel is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.21%
Remediation
Advisory link
Affected products
Debian:12 linux · Debian:13 linux · Debian:14 linux · linux kernel

From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: require a peer station for TDLS setup confirm It's nonsense for the setup confirm to go to station that doesn't even exist, and it hits a warning when building the frame: WARN_ON_ONCE(!sta || !ap_sta) Only accept WLAN_TDLS_SETUP_CONFIRM when the station is already there as a TDLS station. Need to copy the call to ieee80211_tdls_prep_mgmt_packet() since the existing WLAN_TDLS_DISCOVERY_REQUEST already falls through to it. The Linux kernel CVE t

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Debian:12 linux0 → 6.1.190-1
  • Debian:13 linux0 → 6.12.113-1
  • Debian:14 linux0 → 7.2.8-1
  • linux kernelversion unspecified

How to fix CVE-2026-98421

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-98421. EPSS is 0.21%. Act only if a listed version of Linux Linux Kernel is installed.

Which versions are affected?

Compare what you have installed with 0 → 6.1.190-1, 0 → 6.12.113-1, 0 → 7.2.8-1. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.21%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Debian security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 14, 2026 · Tenable CVE Database

    Detected

    In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: require a peer station for TDLS setup confirm It's nonsense for the setup confirm to go to station that doesn't even exist, and it hits a warning when building the frame: WARN_ON_ONCE(!sta || !ap_sta) Only accept WLAN_TDLS_SETUP_CONFIRM when the station is already there as a TDLS station. Need to copy the call to i

  2. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    linux fixed in 6.1.190-1; linux fixed in 6.12.113-1; linux fixed in 7.2.8-1

  3. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    linux fixed in 6.1.190-1

  4. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    linux fixed in 6.12.113-1

  5. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Fix available

    linux fixed in 7.2.8-1

  6. Oct 17, 2026 · OpenSSF OSV / OSV Scanner

    Updated

    In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: require a peer station for TDLS setup confirm It's nonsense for the setup confirm to go to station that doesn't even exist, and it hits a warning when building the frame: WARN_ON_ONCE(!sta || !ap_sta) Only accept WLAN_TDLS_SETUP_CONFIRM when the station is already there as a TDLS station. Need to copy the call to i

Sources

  • CVE.orgVulnerability recordCVE-2026-98421

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-98421

    30-day exploitation probability 0.2%

    first.org
  • Linux Kernel CVEVendor advisoryCVE-2026-98421

    From: Greg Kroah-Hartman Description =========== In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: require a peer station for TDLS setup confirm It's nonsense for the setup confirm to go to station that doesn't even exist, and it hits a warning w

    git.kernel.org
  • OpenSSF OSV / OSV ScannerPackage advisoryDEBIAN-CVE-2026-98421
    osv.dev
  • Tenable CVE DatabaseVulnerability recordCVE-2026-98421

    In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: require a peer station for TDLS setup confirm It's nonsense for the setup confirm to go to station that doesn't even exist, and it hits a warning when building the frame: WARN_ON_ONCE(!sta || !ap_sta) Only accept WLAN_TDLS_SETUP_CONFIRM when the station is already there as a TDLS station. Need to copy the call to i

    tenable.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.