CVE-2026-58684 · Infrastructure
NO FIX YET
A logic error in the smmu_config_l3tt function of the ARM SMMU driver (smmu.c) allows a permission bypass. A local user can use it to escalate privileges without extra execution rights and without user interaction.
first public Nov 10, 2026 · 1 source
Could this affect your app?
Free first check from your website. Connect your repo for the full answer.
Systems whose kernel or device stack includes the smmu.c driver for ARM System MMU hardware. The sources do not name affected kernel versions or whether the driver is enabled by default. unknown
Not affected if no-arm-smmu-hardware
Who cares arm-smmu, kernel, linux
Unknown from the sources.
No fix yet, per the sources.
In smmu_config_l3tt of smmu.c, there is a possible permission bypass due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
Check it with your coding agent
It reads this page and tells you if your code is affected.
Are you affected?
Ask from here. InfraStack checks the affected versions against your stack and answers in your inbox.
InfraStack checks the affected versions against your stack and answers in Slack, with the evidence and the fix.