VulnerabilityPublished 17 Sep 2026Updated 19 Oct 2026

CVE-2026-93072: Linux kernel · irqchip/renesas-irqc: Fix generic interrupt chip leak on remove

Affects Linux kernelSource CVE Database V5

Not known to be exploited · fixed in 616dd89d81ad9a3cf1cfff4088a4c43e4e00d6ba : update Linux kernel when convenient.

Data as of 26 Oct 2026, 13:47 UTC

Severity

Unrated

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 616dd89d81ad9a3cf1cfff4088a4c43e4e00d6ba, 9acc996cb2e8477ae81bd7c067fec15202d6bc89, 7c614f83301d464e2fb498d63552490d137ea10d +2

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 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 ≥ 99c221df33fbfa1b30e15dee879eb0a9ae1be353, < 616dd89d81ad9a3cf1cfff4088a4c43e4e00d6ba	Fixed in 616dd89d81ad9a3cf1cfff4088a4c43e4e00d6ba
LinuxLinux	Affected ≥ 99c221df33fbfa1b30e15dee879eb0a9ae1be353, < 9acc996cb2e8477ae81bd7c067fec15202d6bc89	Fixed in 9acc996cb2e8477ae81bd7c067fec15202d6bc89
LinuxLinux	Affected ≥ 99c221df33fbfa1b30e15dee879eb0a9ae1be353, < 7c614f83301d464e2fb498d63552490d137ea10d	Fixed in 7c614f83301d464e2fb498d63552490d137ea10d
LinuxLinux	Affected ≥ 99c221df33fbfa1b30e15dee879eb0a9ae1be353, < 4bf7614d048434326081eef0ebef33cb77fe2ffc	Fixed in 4bf7614d048434326081eef0ebef33cb77fe2ffc
LinuxLinux	Affected ≥ 99c221df33fbfa1b30e15dee879eb0a9ae1be353, < 3d39757ef791f90028da9c8b7c1fbbb497237e58	Fixed in 3d39757ef791f90028da9c8b7c1fbbb497237e58
LinuxLinux	Affected =4.4	Fixed in–

Description

In the Linux kernel, the following vulnerability has been resolved: irqchip/renesas-irqc: Fix generic interrupt chip leak on remove The driver allocates domain generic chips probe. However, on driver removal, the generic chips are not automatically freed when the interrupt domain is removed because the domain flags do not include IRQ_DOMAIN_FLAG_DESTROY_GC. This causes both the domain generic chips structure and the associated generic chips to be leaked. Additionally, the generic chips remain on the global list and may later be accessed by generic interrupt chip suspend, resume, or shutdown callbacks after the driver has been removed, potentially resulting in a use-after-free and kernel crash. Fix the resource leak by setting IRQ_DOMAIN_FLAG_DESTROY_GC on the interrupt domain; this lets the interrupt domain core automatically release all generic chips when irq_domain_remove() is invoked, removing the need for manual cleanup calls in error paths and remove callback.

References

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