VulnerabilityPublished 23 Oct 2026

CVE-2026-98971: Linux kernel · gpio: exar: initialize the ID before registering its cleanup

Source GCVE Database

Authoritative record:CVE-2026-98971· Medium

Not known to be exploited · fixed in f7ec4dbd2a073dd53b6349be1c586fe8580dd6b2 : update Linux kernel when convenient.

Data as of 26 Oct 2026, 12:55 UTC

Severity

Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS: 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in f7ec4dbd2a073dd53b6349be1c586fe8580dd6b2, bf3d841ef12fcbec4458e2750956b738b043a226, b78c114600ae3df90c083c72c290437b068577c8 +2

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-x5r8-cmvp-6558

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

Product	Affected	Fixed in
LinuxLinux	Affected ≥ 5300ebb695fa0672589ab191062392f686fca75d, < f7ec4dbd2a073dd53b6349be1c586fe8580dd6b2	Fixed in f7ec4dbd2a073dd53b6349be1c586fe8580dd6b2
LinuxLinux	Affected ≥ 5300ebb695fa0672589ab191062392f686fca75d, < bf3d841ef12fcbec4458e2750956b738b043a226	Fixed in bf3d841ef12fcbec4458e2750956b738b043a226
LinuxLinux	Affected ≥ 5300ebb695fa0672589ab191062392f686fca75d, < b78c114600ae3df90c083c72c290437b068577c8	Fixed in b78c114600ae3df90c083c72c290437b068577c8
LinuxLinux	Affected ≥ 5300ebb695fa0672589ab191062392f686fca75d, < 01318927a9055136c207399eeb36ce07becac179	Fixed in 01318927a9055136c207399eeb36ce07becac179
LinuxLinux	Affected ≥ 5300ebb695fa0672589ab191062392f686fca75d, < 4d69e74034b208588636ecc177e0dd43a7696af3	Fixed in 4d69e74034b208588636ecc177e0dd43a7696af3
LinuxLinux	Affected =5.11	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: gpio: exar: initialize the ID before registering its cleanup devm_add_action_or_reset() invokes the cleanup action immediately when registering the action fails. gpio_exar_probe() currently stores the allocated ID in exar_gpio only after registering the action, so that failure makes exar_devm_ida_free() release ID 0. If the allocated ID is nonzero, this leaks that ID and can free ID 0 belonging to another device. Store the ID before registering the cleanup action so both the immediate failure path and normal device teardown release the correct allocation.

References

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