# CVE-2023-53614: linux: In the Linux kernel, the following vulnerability has been resolved:  mm/ksm: fix race with VMA iteration and mm_struc...

CVE-2023-53614 is fixed in linux on 1 platform, first by DEBIAN-CVE-2023-53614, released October 4, 2025. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-53614
- Priority: Routine
- CVSS: 4.7 (medium)
- EPSS: 0.0011
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Oct 4, 2025

## Description

In the Linux kernel, the following vulnerability has been resolved:  mm/ksm: fix race with VMA iteration and mm_struct teardown  exit_mmap() will tear down the VMAs and maple tree with the mmap_lock held in write mode.  Ensure that the maple tree is still valid by checking ksm_test_exit() after taking the mmap_lock in read mode, but before the for_each_vma() iterator dereferences a destroyed maple tree.  Since the maple tree is destroyed, the flags telling lockdep to check an external lock has been cleared.  Skip the for_each_vma() iterator to avoid dereferencing a maple tree without the external lock flag, which would create a lockdep warning.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 6.1.25-1 | [DEBIAN-CVE-2023-53614](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53614.md) | Oct 4, 2025 |
| Linux | linux Debian 13.5 (trixie) | 6.1.25-1 | [DEBIAN-CVE-2023-53614](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53614.md) | Oct 4, 2025 |
| Linux | linux Debian 14 | 6.1.25-1 | [DEBIAN-CVE-2023-53614](https://patchblox.com/security/data/fix/linux/debian-cve-2023-53614.md) | Oct 4, 2025 |

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