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Vulnerability record · CVE-2026-23246 · published 18 March 2026

CVE-2026-23246: Linux kernel vulnerability

Linux · Linux Kernel

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.

8.8 CVSS 3.1 High EPSS 0.29% · top 80.7% CWE-129 · CWE-129
8.8CVSS 3.1 base score
0.29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
5References
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://git.kernel.org/stable/c/162d331d833dc73a3e905a24c44dd33732af1fc5 Patch
https://git.kernel.org/stable/c/650981e718e68005ca2760a6358134b8a98ebea4 Patch
https://git.kernel.org/stable/c/bfde158d5d1322c0c2df398a8d1ccce04943be2e Patch
https://git.kernel.org/stable/c/d58d71c2167601762351962b9604808d3be94400 Patch
https://git.kernel.org/stable/c/f35ceec54d48e227fa46f8f97fd100a77b8eab15 Patch

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Source: NIST National Vulnerability Database (record CVE-2026-23246), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.