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HIGHCVE-2026-23246Published Modified CNA Linux

CVE-2026-23246: wifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration

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.

Metrics

CVSS v3.1
8.8
Severity
HIGH
Fixed in
0
Affected Products
2

Fix available

0162d331d833dc73a3e905a24c44dd33732af1fc56.6.1306.12.776.18.176.19.7650981e718e68005ca2760a6358134b8a98ebea47.0bfde158d5d1322c0c2df398a8d1ccce04943be2ed58d71c2167601762351962b9604808d3be94400f35ceec54d48e227fa46f8f97fd100a77b8eab15
Affected packages
  • Linux / Linux
    < 650981e718e68005ca2760a6358134b8a98ebea4 (from 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c) · < bfde158d5d1322c0c2df398a8d1ccce04943be2e (from 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c) · < f35ceec54d48e227fa46f8f97fd100a77b8eab15 (from 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c) · < d58d71c2167601762351962b9604808d3be94400 (from 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c) · < 162d331d833dc73a3e905a24c44dd33732af1fc5 (from 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c)
  • Linux / Linux
    6.5
    Fixed in 0, 6.6.130, 6.12.77, 6.18.17, 6.19.7, 7.0
CVSS Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References