# CVE-2023-53353: accel/habanalabs: postpone mem_mgr IDR destruction to hpriv_release()

CVE-2023-53353 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53353, released September 17, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-53353
- Priority: Routine
- CVSS: 5.5 (Moderate)
- EPSS: 0.0019
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 17, 2025
- Weakness: Missing Release of Memory after Effective Lifetime
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-53353

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.190-1 | [DEBIAN-CVE-2023-53353](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53353.md) | Sep 17, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.3.7-1 | [DEBIAN-CVE-2023-53353](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53353.md) | Sep 17, 2025 |
| Linux | linux Debian 14 | 6.3.7-1 | [DEBIAN-CVE-2023-53353](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53353.md) | Sep 17, 2025 |

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