VulnerabilityPublished 24 Jun 2026Updated 21 Oct 2026

CVE-2026-53102: Linux kernel · wifi: mt76: Fix memory leak after mt76_connac_mcu_alloc_sta_req()

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in eb466406d2094deefadc2cd6ddb4f6eeb086d1b4 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

Rated by Threat Radar · No CVSS score from NVD or the CNA

EPSS: 0.1% chance of exploitation in 30 days – higher than 1% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in eb466406d2094deefadc2cd6ddb4f6eeb086d1b4, c41075ce8cf05ed8c0e7b7efef000dce548ffc42, a2af91af9536922edc3f63de90c3f1fe9db71717 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 24 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 6683d988089ce0e80bd859a9493333b6b272420e, < eb466406d2094deefadc2cd6ddb4f6eeb086d1b4	Fixed in eb466406d2094deefadc2cd6ddb4f6eeb086d1b4
LinuxLinux	Affected ≥ 6683d988089ce0e80bd859a9493333b6b272420e, < c41075ce8cf05ed8c0e7b7efef000dce548ffc42	Fixed in c41075ce8cf05ed8c0e7b7efef000dce548ffc42
LinuxLinux	Affected ≥ 6683d988089ce0e80bd859a9493333b6b272420e, < a2af91af9536922edc3f63de90c3f1fe9db71717	Fixed in a2af91af9536922edc3f63de90c3f1fe9db71717
LinuxLinux	Affected ≥ 6683d988089ce0e80bd859a9493333b6b272420e, < 8527ac1bce87aaabde6755e8e6eb2a9f439d1292	Fixed in 8527ac1bce87aaabde6755e8e6eb2a9f439d1292
LinuxLinux	Affected ≥ 6683d988089ce0e80bd859a9493333b6b272420e, < 7de35b99503012e57bec027e98ed53f881518b5b	Fixed in 7de35b99503012e57bec027e98ed53f881518b5b
LinuxLinux	Affected =5.18	Fixed in–

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.

References

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