Upper Bound Check Bypass in AMDKFD Linux Kernel Driver

Executive Summary

This vulnerability in the Linux kernel involves a missing upper bound check for num_of_nodes in the kfd_ioctl_get_process_apertures_new function. This could allow an attacker to cause a denial of service or potentially escalate privileges by exploiting improper input validation.

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Detection Guidance

This vulnerability is specific to the Linux kernel's drm/amdkfd component and involves an upper bound check for num_of_nodes in kfd_ioctl_get_process_apertures_new. Detection requires checking kernel logs for related errors or kernel crashes involving amdkfd. No direct network detection commands are applicable.

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Impact Analysis

If exploited, this vulnerability may lead to system crashes, instability, or unauthorized privilege escalation on affected Linux systems. Users relying on the AMDKFD driver for GPU compute tasks could experience disruptions.

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Mitigation Strategies

Update the Linux kernel to a patched version that includes the fix for CVE-2026-53376. Check your distribution's security advisories for the specific kernel version addressing this issue.

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