CVE-2026-53312
Received Received - Intake
Buffer Overflow Fix in Linux Kernel IOMMU RISC-V Driver

Publication date: 2026-06-26

Last updated on: 2026-06-26

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: iommu/riscv: Remove overflows on the invalidation path Since RISC-V supports a sign extended page table it should support a gather->end of ULONG_MAX, but if this happens it will infinite loop because of the overflow. Also avoid overflow computing the length by moving the +1 to the other side of the <
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Meta Information
Published
2026-06-26
Last Modified
2026-06-26
Generated
2026-06-27
AI Q&A
2026-06-26
EPSS Evaluated
N/A
NVD
CVE-2026-53312
EUVD
EUVD-2026-39847
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *
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Exploitability
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CWE ID Description
CWE-UNKNOWN
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Executive Summary

This vulnerability exists in the Linux kernel's iommu/riscv component. It involves an overflow issue on the invalidation path related to RISC-V's sign extended page table support. Specifically, when a gather operation reaches the end of ULONG_MAX, it causes an infinite loop due to an overflow. Additionally, there was an overflow in computing the length, which was fixed by adjusting the arithmetic operation.

Impact Analysis

The vulnerability can cause an infinite loop in the Linux kernel's iommu/riscv code path when handling certain page table operations. This could potentially lead to system hangs or denial of service conditions on affected systems using RISC-V architecture.

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