CVE-2026-90424

Memory leak via misclassified VINTF0 cleanup

Published Sep 17, 2026 · Updated Sep 17, 2026

Memory leakage in the Tegra241 IOMMU driver in Linux 6.12 allows attackers to leave VINTF0 allocated after initialization failures. tegra241_cmdqv_init_structures() loses an unpublished allocation on one error path, while later cleanup mistakes kernel-owned VINTF0 for guest-owned because hyp_own is not initialized yet. These paths require driver initialization on applicable hardware; public sources do not establish an attacker-controlled trigger or a crash.

CVSS severity2.5
Low
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leakage in the Tegra241 IOMMU driver in Linux 6.12 allows attackers to leave VINTF0 allocated after initialization failures. tegra241_cmdqv_init_structures() loses an unpublished allocation on one error path, while later cleanup mistakes kernel-owned VINTF0 for guest-owned because hyp_own is not initialized yet. These paths require driver initialization on applicable hardware; public sources do not establish an attacker-controlled trigger or a crash.

The record

CVE
CVE-2026-90424
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.12
  2. Affected versionversion=918eb5c856f6ce4cf93b4b38e4b5e156905c5943 <1d2271d7df5230e4ce36bdafd17524bd004f3b3f
  3. Affected versionversion=918eb5c856f6ce4cf93b4b38e4b5e156905c5943 <417190bde0fda4ee857999a722ca90163fbec587
  4. Affected versionversion=918eb5c856f6ce4cf93b4b38e4b5e156905c5943 <f40f3144477314b489e4bc209c06cb51679fe82b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.12; version=918eb5c856f6ce4cf93b4b38e4b5e156905c5943 <1d2271d7df5230e4ce36bdafd17524bd004f3b3f; version=918eb5c856f6ce4cf93b4b38e4b5e156905c5943 <417190bde0fda4ee857999a722ca90163fbec587; version=918eb5c856f6ce4cf93b4b38e4b5e156905c5943 <f40f3144477314b489e4bc209c06cb51679fe82b

Published CVSS scores

5.6TenableAV:L/AC:L/Au:N/C:P/I:N/A:C
2.5Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
7.1TenableCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
2.5SUSECVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
7.1TenableCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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