CVE-2023-52760

CVSS 3.1 Score 7.8 of 10 (high)

Details

Published May 21, 2024
Updated: Jul 5, 2024
CWE ID 416

Summary

CVE-2023-52760 is a vulnerability affecting the Linux kernel that has been addressed. The issue lies in the gfs2 file system where the quota data structures were not being properly cleaned up, leading to a use-after-free condition. Specifically, in the gfs2_put_super() function, the quota should have been handled by gfs2_quota_cleanup(), but in some instances, it was being freed before the callback had run for all gfs2_quota_data objects. Consequently, this resulted in use-after-free behavior. The resolution involves removing unnecessary calls to gfs2_destroy_threads() and gfs2_quota_cleanup() in gfs2_put_super() after gfs2_make_fs_ro() has been invoked.

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