CVE-2023-53633
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-10-07

Last updated on: 2026-02-03

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: accel/qaic: Fix a leak in map_user_pages() If get_user_pages_fast() allocates some pages but not as many as we wanted, then the current code leaks those pages. Call put_page() on the pages before returning.
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Meta Information
Published
2025-10-07
Last Modified
2026-02-03
Generated
2026-06-16
AI Q&A
2025-10-07
EPSS Evaluated
2026-06-15
NVD
CVE-2023-53633
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel 6.5
linux linux_kernel From 5.15.160 (inc) to 5.16 (inc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-401 The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.
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Executive Summary

This vulnerability is a memory leak in the Linux kernel's accel/qaic component related to the map_user_pages() function. Specifically, if get_user_pages_fast() allocates some pages but fewer than requested, the current code fails to release those allocated pages, causing a leak. The fix involves calling put_page() on the allocated pages before returning to prevent the leak.

Impact Analysis

The vulnerability can lead to a memory leak in the Linux kernel, which may cause increased memory usage and potentially degrade system performance or stability over time if exploited or triggered repeatedly.

Mitigation Strategies

The vulnerability is fixed in the Linux kernel by correcting a memory leak in the accel/qaic component related to map_user_pages(). To mitigate this vulnerability, you should update your Linux kernel to the version that includes this fix.

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