GHSA-M8WV-9HR6-J68W
Vulnerability from github – Published: 2025-10-04 18:31 – Updated: 2026-02-05 18:30In 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.
{
"affected": [],
"aliases": [
"CVE-2023-53614"
],
"database_specific": {
"cwe_ids": [
"CWE-362"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-10-04T16:15:58Z",
"severity": "MODERATE"
},
"details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmm/ksm: fix race with VMA iteration and mm_struct teardown\n\nexit_mmap() will tear down the VMAs and maple tree with the mmap_lock held\nin write mode. Ensure that the maple tree is still valid by checking\nksm_test_exit() after taking the mmap_lock in read mode, but before the\nfor_each_vma() iterator dereferences a destroyed maple tree.\n\nSince the maple tree is destroyed, the flags telling lockdep to check an\nexternal lock has been cleared. Skip the for_each_vma() iterator to avoid\ndereferencing a maple tree without the external lock flag, which would\ncreate a lockdep warning.",
"id": "GHSA-m8wv-9hr6-j68w",
"modified": "2026-02-05T18:30:29Z",
"published": "2025-10-04T18:31:16Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53614"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/286b0cab31bac29960e5684f6fb331d42f03b363"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/6db504ce55bdbc575723938fc480713c9183f6a2"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b4f664ffd8f78c05a1fd542a28bc5a11e994c014"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
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