What’s Vulnerable › Vulnerabilities

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

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-19

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.

Affected products

• Linux kernel: 3.17 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/038e1d126304fd25d507fd4e671232df57bd1799
• https://git.kernel.org/stable/c/1c0a5c96473b9e7a5f4c453ef6a13dc0f5589a4b
• https://git.kernel.org/stable/c/6bae6ef511a29ef12ab969adeea691067d4d5d74
• https://git.kernel.org/stable/c/742c762bee59c973684f70dfed7de4945d3141e2
• https://git.kernel.org/stable/c/d0afa5395c46d73ad2090aa50209886e84f179bd
• https://git.kernel.org/stable/c/fce36d242a18ddf64731d816a37564103172da11

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