Linux Kernel up to 6.18.32/7.0.9 iommu riscv_iommu_iodir_iotinval privilege escalation

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel up to 6.18.32/7.0.9. The impacted element is the function riscv_iommu_iodir_iotinval of the component iommu. The manipulation leads to an unknown weakness. This vulnerability is documented as CVE-2026-53057. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.18.32/7.0.9. It has been rated as critical. This issue affects the function riscv_iommu_iodir_iotinval of the component iommu. The impact remains unknown. The summary by CVE is:

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).

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2026-53057 since 06/09/2026. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/24/2026).

Upgrading to version 6.18.33 or 7.0.10 eliminates this vulnerability. Applying the patch 3f917d9bff68600f77561900f3145bd4706dc840/d99d1c13faa793ff1abab0d20ab6473c838081b3/f5c262b544975e067ea265fc7403aefbbea8563e 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

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.18.0
• 6.18.1
• 6.18.2
• 6.18.3
• 6.18.4
• 6.18.5
• 6.18.6
• 6.18.7
• 6.18.8
• 6.18.9
• 6.18.10
• 6.18.11
• 6.18.12
• 6.18.13
• 6.18.14
• 6.18.15
• 6.18.16
• 6.18.17
• 6.18.18
• 6.18.19
• 6.18.20
• 6.18.21
• 6.18.22
• 6.18.23
• 6.18.24
• 6.18.25
• 6.18.26
• 6.18.27
• 6.18.28
• 6.18.29
• 6.18.30
• 6.18.31
• 6.18.32
• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.0.6
• 7.0.7
• 7.0.8
• 7.0.9

License

• open-source

Website

• Vendor: https://www.kernel.org/

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