CVE-2026-53102wifi: mt76: Fix memory leak after mt76_connac_mcu_alloc_sta_req()
- 5.5MediumCVSS base score
- 0.12%Exploitation in 30 daysEPSS · top 98% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 15 days later
· 15 days later
Published
- 5 months later
· 5 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.12% · top 98% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
- affected 6683d988089ce0e80bd859a9493333b6b272420e – < 25af8229133c8dc69b12721ad84165cced83caed
- affected 6683d988089ce0e80bd859a9493333b6b272420e – < a2af91af9536922edc3f63de90c3f1fe9db71717
- affected 6683d988089ce0e80bd859a9493333b6b272420e – < 7de35b99503012e57bec027e98ed53f881518b5b
- affected 6683d988089ce0e80bd859a9493333b6b272420e – < 8527ac1bce87aaabde6755e8e6eb2a9f439d1292
- affected 6683d988089ce0e80bd859a9493333b6b272420e – < eb466406d2094deefadc2cd6ddb4f6eeb086d1b4
- affected 6683d988089ce0e80bd859a9493333b6b272420e – < c41075ce8cf05ed8c0e7b7efef000dce548ffc42
- affected 5.18
- unaffected < 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.*
- unaffected 7.0.10 – ≤ 7.0.*
- unaffected 7.1 – ≤ *
References
References6
- https://git.kernel.org/stable/c/25af8229133c8dc69b12721ad84165cced83caed (opens in a new tab)
- https://git.kernel.org/stable/c/a2af91af9536922edc3f63de90c3f1fe9db71717 (opens in a new tab)
- https://git.kernel.org/stable/c/7de35b99503012e57bec027e98ed53f881518b5b (opens in a new tab)
- https://git.kernel.org/stable/c/8527ac1bce87aaabde6755e8e6eb2a9f439d1292 (opens in a new tab)
- https://git.kernel.org/stable/c/eb466406d2094deefadc2cd6ddb4f6eeb086d1b4 (opens in a new tab)
- https://git.kernel.org/stable/c/c41075ce8cf05ed8c0e7b7efef000dce548ffc42 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-38970 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-53102)Record last updated .