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Vulnerability DatabaseCVE-2023-53633
CVE-2023-53633:
Linux Kernel vulnerability analysis and mitigation
Overview
In the Linux kernel, a memory leak vulnerability (CVE-2023-53633) was identified in the accel/qaic component. The issue occurs in the mapuserpages() function where if getuserpages_fast() allocates some pages but not as many as requested, the code fails to properly free the allocated pages, resulting in a memory leak (NVD).
Technical details
The vulnerability specifically affects the mapuserpages() function in the Linux kernel's accel/qaic component. When getuserpagesfast() partially succeeds - meaning it allocates some but not all requested pages - the code fails to call putpage() on the already allocated pages before returning, leading to a memory leak (NVD).
Impact
The vulnerability results in a memory leak in the Linux kernel, which could potentially lead to resource exhaustion over time if repeatedly triggered (NVD).
Mitigation and workarounds
The vulnerability has been resolved by implementing a fix that calls putpage() on the allocated pages before returning when getuserpagesfast() fails to allocate all requested pages (NVD).
Additional resources
Source: This report was generated using AI
Related Linux Kernel vulnerabilities:
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