VulnerabilityPublished 23 Oct 2026

CVE-2026-98957: Linux kernel · wifi: mt76: mt7915: disable rx napi when removing device

Source GCVE Database

Authoritative record:CVE-2026-98957

Not known to be exploited · fixed in 7199ee4b47de0b61fa6455a1587c5ab645ebe262 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 14:05 UTC

Severity

Unrated

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 7199ee4b47de0b61fa6455a1587c5ab645ebe262, 916c484d29d82f45c281da2786fcd6a1284430ce, 0281dac1e213329b053fb02e612de7f1477a52d7 +1

Exploitation evidence

Disclosed: evidence found.
CVE published 23 Oct 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.

ghsa-44r6-7479-rjm3

What to do

Upgrade Linux kernel to 7199ee4b47de0b61fa6455a1587c5ab645ebe262, 916c484d29d82f45c281da2786fcd6a1284430ce, 0281dac1e213329b053fb02e612de7f1477a52d7 or 0f9afe238eeb79829f0f92f376ba3a20781caccd.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ e57b7901469fc0b021930b83a8094baaf3d81b09, < 7199ee4b47de0b61fa6455a1587c5ab645ebe262	Fixed in 7199ee4b47de0b61fa6455a1587c5ab645ebe262
LinuxLinux	Affected ≥ e57b7901469fc0b021930b83a8094baaf3d81b09, < 916c484d29d82f45c281da2786fcd6a1284430ce	Fixed in 916c484d29d82f45c281da2786fcd6a1284430ce
LinuxLinux	Affected ≥ e57b7901469fc0b021930b83a8094baaf3d81b09, < 0281dac1e213329b053fb02e612de7f1477a52d7	Fixed in 0281dac1e213329b053fb02e612de7f1477a52d7
LinuxLinux	Affected ≥ e57b7901469fc0b021930b83a8094baaf3d81b09, < 0f9afe238eeb79829f0f92f376ba3a20781caccd	Fixed in 0f9afe238eeb79829f0f92f376ba3a20781caccd
LinuxLinux	Affected =5.8	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7915: disable rx napi when removing device Unloading the mt7915e module with a MT7916 triggers multiples WARN in __netif_napi_del_locked() and in page_pool_disable_direct_recycling() because the driver does not disable the napi before destroying it. This is troublesome since on MT7916 it is required to unload the module and reinsert it with a different enable_6ghz parameter to change the frequency. The system generally becomes unstable after reinserting the module. Fix it by disabling rx napi inside mt7915e itself, even through napi rx is enabled in the mt76 generic code. Disabling it in the mt76 generic code was previously attempted and reverted because napi was disabled too late and rx handlers could access freed structures. Note that the tx side is enabled and disabled by the mt76 generic code. It is disabled in mt7915_stop_hardware() since, unlike mt7915_unregister_device(), is it also called in the probe path if an error happens after rx napi is enabled.

References

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