CVE-2026-23246
wifi: mac80211: bounds-check link_id in ieee80211_ml_reconfiguration
HIGH 8.8
At a glance
- Source
- NVD
- EPSS
- EPSS 0.30 % · percentile 23 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-129 — Improper Validation of Array Index
References
- https://git.kernel.org/stable/c/650981e718e68005ca2760a6358134b8a98ebea4
- https://git.kernel.org/stable/c/bfde158d5d1322c0c2df398a8d1ccce04943be2e
- https://git.kernel.org/stable/c/f35ceec54d48e227fa46f8f97fd100a77b8eab15
- https://git.kernel.org/stable/c/d58d71c2167601762351962b9604808d3be94400
- https://git.kernel.org/stable/c/162d331d833dc73a3e905a24c44dd33732af1fc5
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | Linux |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-12809
- GCVE · GCVE-0-2026-23246
CERT-FR advisories
- CERTFR-2026-AVI-1066 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0954 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0926 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0697 — Multiples vulnérabilités dans le noyau Linux de SUSE · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0548 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0376 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.5.1 < 6.6.130cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.7 < 6.12.77cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.13 < 6.18.17cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.19 < 6.19.7cpe:2.3:o:linux:linux_kernel:6.5:-:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c < 650981e718e68005ca2760a6358134b8a98ebea4 ; affected 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c < bfde158d5d1322c0c2df398a8d1ccce04943be2e ; affected 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c < f35ceec54d48e227fa46f8f97fd100a77b8eab15 ; affected 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c < d58d71c2167601762351962b9604808d3be94400 ; affected 8eb8dd2ffbbb6b0b8843b66754ee9f129f1b2d6c < 162d331d833dc73a3e905a24c44dd33732af1fc5 |
| Linux · Linux | affected 6.5 ; unaffected 0 < 6.5 ; unaffected 6.6.130 ≤ 6.6.* ; unaffected 6.12.77 ≤ 6.12.* ; unaffected 6.18.17 ≤ 6.18.* ; unaffected 6.19.7 ≤ 6.19.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |