wifi: mt76: Fix memory leak after mt76_connac_mcu_alloc_sta_req() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.12 % · percentile 2 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Modified
Description
In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: Fix memory leak after mt76_connac_mcu_alloc_sta_req() mt76_connac_mcu_alloc_sta_req() allocates an skb which is expected to be freed eventually by mt76_mcu_skb_send_msg(). However, currently if an intermediate function fails before sending, the allocated skb is leaked. Specifically, mt76_connac_mcu_sta_wed_update() and mt76_connac_mcu_sta_key_tlv() may fail, leading to an immediate memory leak in the error path. Fix this by explicitly freeing the skb in these error paths. Commit 7c0f63fe37a5 ("wifi: mt76: mt7996: fix memory leak on mt7996_mcu_sta_key_tlv error") made a similar change. Compile tested only. Issue found using a prototype static analysis tool and code review.
Weaknesses (CWE)
- CWE-401 — Missing Release of Memory after Effective Lifetime
References
- https://git.kernel.org/stable/c/25af8229133c8dc69b12721ad84165cced83caed
- https://git.kernel.org/stable/c/a2af91af9536922edc3f63de90c3f1fe9db71717
- https://git.kernel.org/stable/c/7de35b99503012e57bec027e98ed53f881518b5b
- https://git.kernel.org/stable/c/8527ac1bce87aaabde6755e8e6eb2a9f439d1292
- https://git.kernel.org/stable/c/eb466406d2094deefadc2cd6ddb4f6eeb086d1b4
- https://git.kernel.org/stable/c/c41075ce8cf05ed8c0e7b7efef000dce548ffc42
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2026-38970
- GCVE · GCVE-0-2026-53102
CERT-FR advisories
- CERTFR-2026-AVI-1289 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1253 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1252 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1229 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1162 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1066 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1064 — Multiples vulnérabilités dans le noyau Linux de SUSE · 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
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 5.18 < 7.0.10
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 6683d988089ce0e80bd859a9493333b6b272420e < 25af8229133c8dc69b12721ad84165cced83caed ; affected 6683d988089ce0e80bd859a9493333b6b272420e < a2af91af9536922edc3f63de90c3f1fe9db71717 ; affected 6683d988089ce0e80bd859a9493333b6b272420e < 7de35b99503012e57bec027e98ed53f881518b5b ; affected 6683d988089ce0e80bd859a9493333b6b272420e < 8527ac1bce87aaabde6755e8e6eb2a9f439d1292 ; affected 6683d988089ce0e80bd859a9493333b6b272420e < eb466406d2094deefadc2cd6ddb4f6eeb086d1b4 ; affected 6683d988089ce0e80bd859a9493333b6b272420e < c41075ce8cf05ed8c0e7b7efef000dce548ffc42 |
| Linux · Linux | affected 5.18 ; unaffected 0 < 5.18 ; unaffected 6.1.191 ≤ 6.1.* ; unaffected 6.6.160 ≤ 6.6.* ; unaffected 6.12.109 ≤ 6.12.* ; unaffected 6.18.50 ≤ 6.18.* |
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 |