CVE-2023-53353
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-17

Last updated on: 2025-12-11

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: accel/habanalabs: postpone mem_mgr IDR destruction to hpriv_release() The memory manager IDR is currently destroyed when user releases the file descriptor. However, at this point the user context might be still held, and memory buffers might be still in use. Later on, calls to release those buffers will fail due to not finding their handles in the IDR, leading to a memory leak. To avoid this leak, split the IDR destruction from the memory manager fini, and postpone it to hpriv_release() when there is no user context and no buffers are used.
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Meta Information
Published
2025-09-17
Last Modified
2025-12-11
Generated
2026-06-16
AI Q&A
2025-09-17
EPSS Evaluated
2026-06-15
NVD
CVE-2023-53353
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel From 5.1 (inc) to 6.3.4 (exc)
Helpful Resources
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 involves the Linux kernel's habanalabs accelerator memory manager. The issue is that the memory manager's IDR (ID Radix tree) is destroyed too early when a user releases the file descriptor, while the user context and memory buffers might still be in use. Because the handles for these buffers are no longer found in the IDR, attempts to release them later fail, causing a memory leak. The fix postpones the destruction of the IDR until the user context is fully released and no buffers are in use.

Impact Analysis

This vulnerability can lead to memory leaks in the Linux kernel when using the habanalabs accelerator. Memory leaks can degrade system performance, cause resource exhaustion, and potentially lead to system instability or crashes if the leaked memory accumulates over time.

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