CVE-2023-53614 (GCVE-0-2023-53614)

Vulnerability from cvelistv5 – Published: 2025-10-04 15:44 – Updated: 2026-05-11 19:48
VLAI
Title
mm/ksm: fix race with VMA iteration and mm_struct teardown
Summary
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.
Severity
4.7 (Medium)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: a5f18ba0727656bd1fe3bcdb0d563f81790f9a04 , < 286b0cab31bac29960e5684f6fb331d42f03b363 (git)
Affected: a5f18ba0727656bd1fe3bcdb0d563f81790f9a04 , < b4f664ffd8f78c05a1fd542a28bc5a11e994c014 (git)
Affected: a5f18ba0727656bd1fe3bcdb0d563f81790f9a04 , < 6db504ce55bdbc575723938fc480713c9183f6a2 (git)
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Linux Linux Affected: 6.1
Unaffected: 0 , < 6.1 (semver)
Unaffected: 6.1.22 , ≤ 6.1.* (semver)
Unaffected: 6.2.9 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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