# CVE-2026-53280: linux: In the Linux kernel, the following vulnerability has been resolved:  iommu: Fix NULL group->domain dereference in pci...

CVE-2026-53280 is fixed in linux on 1 platform by DEBIAN-CVE-2026-53280 (version 7.0.10-1), released June 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-53280
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0014
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 26, 2026

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 7.0.10-1 | [DEBIAN-CVE-2026-53280](https://patchblox.com/security/data/fix/linux/debian-cve-2026-53280.md) | Jun 27, 2026 |

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Data as of 2026-11-09T07:25:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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