CVE-2026-53057
Received Received - Intake
IOMMU TLB Invalidation Flaw in Linux Kernel

Publication date: 2026-06-24

Last updated on: 2026-06-24

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: iommu/riscv: Add IOTINVAL after updating DDT/PDT entries Add riscv_iommu_iodir_iotinval() to perform required TLB and context cache invalidations after updating DDT or PDT entries, as mandated by the RISC-V IOMMU specification (Section 6.3.1 and 6.3.2).
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Meta Information
Published
2026-06-24
Last Modified
2026-06-24
Generated
2026-06-25
AI Q&A
2026-06-24
EPSS Evaluated
N/A
NVD
CVE-2026-53057
EUVD
EUVD-2026-38925
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability relates to the Linux kernel's RISC-V IOMMU implementation. Specifically, it involves the lack of required TLB (Translation Lookaside Buffer) and context cache invalidations after updating DDT (Device Directory Table) or PDT (Page Directory Table) entries. The fix adds a function, riscv_iommu_iodir_iotinval(), to perform these invalidations as mandated by the RISC-V IOMMU specification sections 6.3.1 and 6.3.2.

Impact Analysis

Without the required TLB and context cache invalidations after updating DDT or PDT entries, the system may use stale or incorrect memory mappings. This can lead to potential security issues such as unauthorized memory access or data corruption, impacting system stability and security.

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