CVE-2026-53053
8.8 · HIGHOverview
CVE-2026-53053 is a high-severity vulnerability affecting linux linux_kernel. It was published on June 24, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
In the Linux kernel, the following vulnerability has been resolved:
iommu/amd: Fix clone_alias() to use the original device's devid
Currently clone_alias() assumes first argument (pdev) is always the
original device pointer. This function is called by
pci_for_each_dma_alias() which based on topology decides to send
original or alias device details in first argument.
This meant that the source devid used to look up and copy the DTE
may be incorrect, leading to wrong or stale DTE entries being
propagated to alias device.
Fix this by passing the original pdev as the opaque data argument to
both the direct clone_alias() call and pci_for_each_dma_alias(). Inside
clone_alias(), retrieve the original device from data and compute devid
from it.
Remediation
Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| linux | linux_kernel | >= 5.4.17, < 6.12.91 | Affected |
Frequently Asked Questions
What is CVE-2026-53053?
CVE-2026-53053 is a high-severity vulnerability affecting linux linux_kernel. It was published on June 24, 2026 and has a CVSS 3.1 base score of 8.8 (HIGH).
How severe is CVE-2026-53053?
This vulnerability has a CVSS 3.1 base score of 8.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-53053?
Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-53053?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-53053 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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