EUVD-2026-12809
CVSS Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4Tags
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration link_id is taken from the ML Reconfiguration element (control & 0x000f), so it can be 0..15. link_removal_timeout[] has IEEE80211_MLD_MAX_NUM_LINKS (15) elements, so index 15 is out-of-bounds. Skip subelements with link_id >= IEEE80211_MLD_MAX_NUM_LINKS to avoid a stack out-of-bounds write.
Analysis
A stack out-of-bounds write vulnerability exists in the Linux kernel's mac80211 WiFi subsystem in the ieee80211_ml_reconfiguration function, where the link_id parameter extracted from the ML Reconfiguration element is not properly bounds-checked before being used as an array index. The vulnerability affects Linux kernel versions across multiple release branches (6.5 through 7.0-rc2), allowing an attacker with network proximity to craft a malicious WiFi frame to trigger a buffer overflow and potentially cause denial of service or code execution. …
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Priority Score
Vendor Status
Debian
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye | not-affected | - | - |
| bullseye (security) | fixed | 5.10.251-1 | - |
| bookworm | not-affected | - | - |
| bookworm (security) | fixed | 6.1.164-1 | - |
| trixie | vulnerable | 6.12.73-1 | - |
| trixie (security) | vulnerable | 6.12.74-2 | - |
| forky | vulnerable | 6.19.6-2 | - |
| sid | fixed | 6.19.8-1 | - |
| (unstable) | fixed | 6.19.8-1 | - |
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External POC / Exploit Code
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