Linux Kernel up to 7.0.9 iommu pci_dev_reset_iommu_done domain denial of service

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.77-

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 7.0.9. Impacted is the function pci_dev_reset_iommu_done of the component iommu. This manipulation of the argument domain causes denial of service. This vulnerability is handled as CVE-2026-53280. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 7.0.9. Affected by this vulnerability is the function pci_dev_reset_iommu_done of the component iommu. The manipulation of the argument domain with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: iommu: Fix NULL group->domain dereference in pci_dev_reset_iommu_done() Local sashiko review pointed it out that group->domain could be NULL when a default domain fails to allocate during the first probe, which can crash at domain->ops->attach_dev dereference in __iommu_attach_device() invoked by pci_dev_reset_iommu_done(). pci_dev_reset_iommu_prepare() is fine as an old_domain pointer can be NULL. Skip the re-attach in pci_dev_reset_iommu_done() to fix the bug.

The advisory is shared at git.kernel.org. This vulnerability is known as CVE-2026-53280 since 06/09/2026. The exploitation appears to be easy. Technical details are known, but no exploit is available.

Upgrading to version 7.0.10 eliminates this vulnerability. Applying the patch 17194cd0dd236e732d116d50840d795ca50ef196/d769711fcddd005f1e654b3bde547140917fe696 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

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Vendor

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.5

VulDB Base Score: 5.7
VulDB Temp Score: 5.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Kernel 7.0.10
Patch: 17194cd0dd236e732d116d50840d795ca50ef196/d769711fcddd005f1e654b3bde547140917fe696

Timelineinfo

06/09/2026 CVE reserved
06/26/2026 +17 days Advisory disclosed
06/26/2026 +0 days VulDB entry created
06/26/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2026-53280 (🔒)
GCVE (CVE): GCVE-0-2026-53280
GCVE (VulDB): GCVE-100-374401

Entryinfo

Created: 06/26/2026 22:36
Changes: 06/26/2026 22:36 (60)
Complete: 🔍
Cache ID: 216::103

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