VulnerabilityPublished 18 Oct 2026

CVE-2026-98721: Linux kernel · mtd: rawnand: cadence: Initialize IRQ state before requesting IRQ

Source GCVE Database

Authoritative record:CVE-2026-98721

Not known to be exploited · fixed in c69d8aceda362c95bbc4e2182f5829275a7db0c8 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.2% chance of exploitation in 30 days – higher than 9% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in c69d8aceda362c95bbc4e2182f5829275a7db0c8, bbd87eca5407288f2b63ff9357c611cd57e7e640, 24319f25b641e55f84e55455092a39a2485c78d4 +2

Exploitation evidence

Disclosed: evidence found.
CVE published 18 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-wr98-xxcm-8gqw

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ ec4ba01e894d3165e4d1ccbef782ef5593b708b4, < c69d8aceda362c95bbc4e2182f5829275a7db0c8	Fixed in c69d8aceda362c95bbc4e2182f5829275a7db0c8
LinuxLinux	Affected ≥ ec4ba01e894d3165e4d1ccbef782ef5593b708b4, < bbd87eca5407288f2b63ff9357c611cd57e7e640	Fixed in bbd87eca5407288f2b63ff9357c611cd57e7e640
LinuxLinux	Affected ≥ ec4ba01e894d3165e4d1ccbef782ef5593b708b4, < 24319f25b641e55f84e55455092a39a2485c78d4	Fixed in 24319f25b641e55f84e55455092a39a2485c78d4
LinuxLinux	Affected ≥ ec4ba01e894d3165e4d1ccbef782ef5593b708b4, < 21f027016b1290d13c30b198ae7a00e6b3d1d5a5	Fixed in 21f027016b1290d13c30b198ae7a00e6b3d1d5a5
LinuxLinux	Affected ≥ ec4ba01e894d3165e4d1ccbef782ef5593b708b4, < 1ed0ccd5649154bfc00ab11c59262d4f42515252	Fixed in 1ed0ccd5649154bfc00ab11c59262d4f42515252
LinuxLinux	Affected =5.5	Fixed in–

AI-suggested

The vulnerability has been resolved by initializing the IRQ lock and completion object before registering the IRQ handler. Users should apply the official Linux kernel update that includes this fix. Patch status is not explicitly confirmed in the provided data; check the vendor advisory or Linux kernel release notes for the exact fixed versions and update accordingly.

Description

A vulnerability in the Linux kernel's Cadence NAND interrupt handler was resolved by initializing the IRQ state before requesting the IRQ. The issue involved a race condition where the interrupt handler could access uninitialized synchronization state due to the IRQ being registered before the IRQ lock and completion object were initialized.

References

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